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Ichthyophiidae:
The family Ichthyophiidae is made up of 2 genera and 38 species, which have true tails (like rhinatrematids) with caudal vertebrae, a counter-sunk lower jaw, an advanced dual jaw closing mechanism and primary annuli subdivided by secondary and tertiary annuli. Annuli in some species are straight posteriorly but angled anteriorly when viewed ventrally. Dermal scales are found in annular grooves. The tentacular opening lies between the nostrils and the eye or closer to the eye. Unlike rhinatrematids, ichthyophiid skulls are more solidly roofed (stegokrotaphic). The mouth may be terminal or subterminal. Members of this family may reach 500 mm, with the smallest species at 135 mm total length. Clutches are laid in moist soil or a burrow near water (ponds or streams). Females attend their clutches until larvae emerge to complete their metamorphosis in water. Ichthyophiids range from southern India, Sri Lanka, Thailand, southern China, Southeast Asia, Borneo, Malaysia, Indonesia, to the Philippines.
Genus : Caudacaecilia (5 species)
Ichthyophis (34 species)
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