Siphonopidae
19 species.
- Angoulême microcaeciliaMicrocaecilia dermatophaga
- Boettger's CaecilianSiphonops paulensis
- Brazilian CaecilianBrasilotyphlus braziliensis
- El Centro CaecilianMicrocaecilia pricei
- Hardy's CaecilianSiphonops hardyi
- Honda CaecilianMicrocaecilia nicefori
- Insular CaecilianLuetkenotyphlus insulanus
- Reinhardt's CaecilianMimosiphonops reinhardti
- Ringed CaeciliaSiphonops annulatus
- Salvador CaecilianSiphonops leucoderus
- Sao Paulo CaecilianLuetkenotyphlus brasiliensis
- Tiny Brazilian CaecilianMicrocaecilia supernumeraria
- Tiny Cayenne CaecilianMicrocaecilia unicolor
- Tiny Taylor's CaecilianMicrocaecilia taylori
- Tiny Venezuelan CaecilianMicrocaecilia rabei
- Tiny White CaecilianMicrocaecilia albiceps
- Worm-patterned CaecilianMimosiphonops vermiculatus
- Microcaecilia grandis
- Microcaecilia iwokramae