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Odorranahosii and O.monjerai from Peninsular Malaysia were examined for endoparasites. Only Nematoda were found. For Odorranahosii, Amphibiocapillariabufonis, Cosmocercaornata and Abbreviata sp. (cysts) were found. For O.monjerai, A.bufonis and C.ornata were found. All are new host records.

Seventy-four representatives of 8 species of whiptail lizards (Aspidoscelis ssp.), from Mexico were examined for helminths: Aspidoscelis calidipes (n = 8), A. communis (n = 10), A. cozumelae (n = 9), A. gularis (n = 10), A. lineattissima (n = 9), A. motaguae (n = 11), A. parvisocia (n = 9), and A. sackii (n = 8). We found one species of Cestoda, Oochoristica scelopori, and 7 species of Nematoda, including Abbreviata terrapenis, Parapharyngodon alvarengai, Pharyngodon warneri, Spauligodon garciaprietoi, Spinicauda spinicauda, Thubunaea cnemidophorus, and Physaloptera sp. Mean helminth diversity per lizard species was 3.1 (SD 1.8). Spauligodon garciaprietoi was present in 6 of 8 (75%) of the lizard species. The specimens we examined were infected by an aggregate of helminths that were either characteristic of Aspidoscelis spp. from the United States (North America: O. scelopori, T. cnemidophorus, A. terrapenis, P. warneri) or characteristic of Aspidoscelis spp. from Mexico (Mesoamerica: S. garciaprietoi, P. alvarengai, S. spinicauda). Twentytwo new host records are reported.

Fifty-six speckled rattlesnakes, Crotalus mitchellii, from western North America were examined for helminths. One species of Cestoda (tetrathyridia of Mesocestoides sp.) and 5 species of Nematoda (gravid adults of Abbreviata terrapenis, Physaloptera abjecta, Thubunaea cnemidophorus, and Travassoascaris araujoi and larvae of Physocephalus sp.) were found. Travassoascaris araujoi had the highest prevalence and greatest mean intensity of helminths infecting C. mitchellii. Three new host records for C. mitchellii are reported. As has been reported for other North American rattlesnakes, C. mitchellii is parasitized by “generalist” helminths.

A sample of 128 individuals of the slender-toed geckos Nactus spp. from six islands of Papua New Guinea (Bougainville, Fergusson, Misima, New Britain, Rossel, Sudest) was examined for gastrointestinal helminths. Found were one species of Digenea, Mesocoelium brevicaecum; one species of Cestoda, Gekkotaenia novaeguineaensis; one species of Acanthocephala, Sauracanthorhynchus sphenomorphicola; and eight species of Nematoda, Aplectana zweifeli, Bakeria bakeri, Cosmocerca zugi, Meteterakis crombiei, Parapharyngodon maplestoni, Physalopteroides milnensis, Abbreviata sp. (larvae in cysts), Rictulariidae gen. sp. (larvae in cysts). A total of 1,256 helminths was found. Aplectana zweifeli (n = 447), Parapharyngodon maplestoni (n = 238), and Meteterakis crombiei (n = 221) were the most abundant helminths. Ten new host records are reported for Nactus spp. There was a mean of 7.3 ± 3.1 (3–11) helminth species per island. Bougainville Island had the fewest number of helminth species (3) and Misima Island (11) the highest. Nactus spp. are parasitized by generalist helminths that also infect other lizard species.

Parapharyngodon guerreroensis n. sp. (Nematoda: Pharyngodonidae) from the large intestine of Lepidophyma smithii from Mexico is described and illustrated. A list of nominal species and a key to species from the Panamanian region are provided. Parapharyngodon guerreroensis n. sp. is the 57th species assigned to the genus and the 10th from the Panamanian region. It differs from other species in the genus in that males possess 3 pairs of caudal papillae, an anterior cloacal lip supporting 4 digitiform processes, and a blunt spicule 67–104 μm in length, while females possess long flexible caudal appendages.

Three species of Meristogenys frogs (Ranidae) from Borneo, Malaysia were examined for helminths: Meristogenys orphnocnemis (n = 8), M. poecilus (n = 5), and M. whiteheadi (n = 8). We found three species of Nematoda: Cosmocerca ornata, Rhabdias multiproles, and Abbreviata sp. (larvae in cysts). Both C. ornata and R. multiproles are old world in distribution. The most numerous helminths were Abbreviata sp. in M. whiteheadi. The three species of Meristogenys are parasitized by generalist helminths that also infect other species of anurans. Five new host records are reported.

We collected 18 Anaxyrus terrestris (Southern Toad) in March and May 2014 and July 2015 from Topsail Hill Preserve State Park, Walton County, FL, and examined them for helminth and arthropod parasites. Fourteen toads (78%) were infected or infested with parasites as follows: 2 (11%) with Megalodiscus temperatus, 1 (6%) with tetrathyridia of Mesocestoides sp., 3 (17%) with Cylindrotaenia americana, 2 (11%) with 3rd-stage larval Physaloptera sp., 9 (50%) with Cosmocercoides variabilis, 10 (55%) with Oswaldocruzia pipiens, and 2 (11%) with larval Hannemania hegeneri chigger mites. We observed multiple infections/infestations of helminths and/or arthropods in 7 (39%) of these hosts. Herein, we report 5 new host and 2 new geographic-distribution records.

Rhabdias garhwalensis sp. nov. from the lungs of Duttaphrynus himalayanus (Günther, 1864) collected in Kimoi Tehsil, district Tehri Garhwal (Uttarakhand), India is described and illustrated. Rhabdias garhwalensis sp. nov. represents the 15th species described from the Oriental zoogeographical zone and the 9th species from India. The new species is differentiated from the closely related Oriental species in having 6 lips, cup–shaped buccal cavity with muscular striations in the posterior region and smaller esophagus to body length ratio. In addition to the new species, a second species, Cosmocercoides bufonis Karve, 1944, was found in the large intestine of D. himalayanus.

Falcaustra tintlwini sp. nov. (Ascaridida, Kathlaniidae) from the large intestine of Batagur trivittata (Testudines, Geoemydidae) is described and illustrated. Falcaustra tintlwini represents the 20th Oriental species assigned to the genus and is distinguished from other Oriental species by the distribution pattern of the caudal papillae (6 precloacal, 12 postcloacal, and 1 median), length of spicules (0.43-0.50 mm) and absence of a pseudosucker.

A new species of cyclophyllidean tapeworm, Oochoristica harschi sp. nov. is described from 2 of 18 (11%) non-native Mediterranean geckos ( Hemidactylus turcicus ) collected in June 2016 from Tom Green County, Texas, USA The new species has few characteristics in common with 17 species of Oochoristica previously described from Nearctic reptiles. Of this group, O. harschi is most similar to O. macallisteri Bursey and Goldberg, 1996 from the side-blotched lizard, Uta stansburiana from Arizona and California, USA, in number of testes, 14–20 vs. 12–20. However, O. harschi has oval suckers and a long neck compared to the circular suckers and absent neck in O. macallisteri . On comparison with other species of Oochoristica , it was found O. chinensis Jensen, Schmidt and Kuntz, 1983 from the Sino-Japanese realm, O. iguanae Bursey and Goldberg, 1996 from the Neotropical realm, and O. maccoyi Bursey and Goldberg, 1966 from the Panamanian realm were most similar to the new species. However, O. harschi can be differentiated by possessing a much longer neck and a shorter cirrus pouch. It can be further differentiated from O. chinensis by possessing an ovoid vs. an irregular vitellarium, from O. iguanae by having a smaller strobilus (65 vs . 110 mm) as well as an ovoid vs. a triangular vitellarium, and from O. maccoyi by having significantly more proglottids (145 vs. 89) and a longer strobilus (65 vs. 20 mm). The new species is the fifth species of Oochoristica reported from non-native H. turcicus and the 18 th species described from the Nearctic region.