Monotypic genus confined to the Appalachian and Ozark mountains in the USA. External characteristics are probably similar to those of the Andrias species, at least in general appearance (rather tuberculate and rough skin, large head, relatively tiny eyes lacking eyelids, longitudinal fold of skin along the sides, overall dark colour).
| Scientific Name | Common Name | Distribution | Size | Notes |
| Cryptobranchus | ||||
| C. allegianensis | Hellbender | E USA (Ozark and Appalachian mountains) | 11-22½" avg: 29" max. | Coloration: variable. Overall dark brown is most common, but other shades have been observed including olive green and orange-reddish . |
| C. a. allegianensis | Eastern Hellbender | E USA (S&C New York state SW to S Illinois, NE Mississippi, N Georgia and N Alabama; also E/C Montana) | 11½-20" | Found in mountain streams within its range. Longevity is 80-90 years. Coloration: overall brown or grey, usually with dark or light spots scattered across the body, head and tail. Reproduction: eggs are laid during autumn. Larvae are sensitive to water quality. |
| C. a. bishopi | Ozark Hellbender | E USA (SE Montana and adj. Arkansas) | 11-22½" | Confined to two river systems, the Black River and the northern fork of the White River [Indiviglio]. Coloration: similar to nominate subspecies, but dark markings are large and blotchlike. |
Newts & Salamanders - a complete pet owner's manual, Frank Indiviglio, Barrons 1997. Gives details of natural history and care for Cryptobranchus.
A Field Guide to Reptiles and Amphibians of Eastern and Central North America, R Conant and J T Collins, Peterson Field Guides, Houghton Mifflin, Boston/New York 1998.
Animal Life Encyclopedia Volume 5: Fishes and Amphibia, Grzimek,1975 provided details of the general appearance of the species.
The Cryptobranchid Interest Group, a very worthwhile project that deserves our support.
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