C. spixii (Hallowell). Comment: Valid, fide Freiberg, 1982, 
Snakes S. Amer. :92, but with no explanation. 
Clelia, Fitzinger, L826. 
Color patterns used in key are quite variable. 
C. bicolor (Peracca). Distribution: also Peru, vicinity of 
Iquitos (Dixon & Soini, 1977) and Huanuco (USNM). 
C. equatoriana (Amaral). Distribution: also Amazonian Ecuador 
(USNM). 
Conophis Peters, 1960. 
Cc. nevermanni Dunn = Crisantophis nevermanni, fide Villa, 
LOTL,,. whe (Herpetol _5 3 bi3' 7 ie 
Corallus Daudin, 1803. 
Cc. enydris. Subspecific key has couplets reversed, cooki 
fewer than 50 scale rows. 
Crisantophis Villa, 1971, Ibid. 5:173. Type-species: Conophis 
nevermanni Dunn. Monotypic. 
Crotalus Linnaeus, 1758. 
The identification of the subspecies of C. durissus is largely 
based on color pattern and should be checked against specimens or 
photographs. 
Cc. durissus Linnaeus. 
1978 Crotalus durissus trigonicus Harris & Simmons, Bull. 
Maryland Herpetol. Soc. 14(3):112. Nomen nudum. 
1978 C. durissus trigonicus Harris & Simmons, Mem. Inst. 
Butantan [1976/77] 40/41 306. Type locality, Guyana, 
Rupununi Savanna. Distribution: Rupununi Savanna. 
1980 C. pifanorum Sandner-Montilla, Mem. Cien. Ofidiol. SNS) A 
Type-locality: 68 km S Espino, en direccion a Puerto 
Parmana, Parcelamiento de Agrotecnicos "Dr. Gonzalo 
Ledesma", entre los nacientes de los Rios Otocuao (Este) 
y Carapa (Oeste), Distrito Infante, Estado Guarico, 
Venezuela. Distribution: known only from type locality. 
Cyclagras Cope, 1885 = Hydrodynastes Fitzinger, 1843, fide Hoge, 
L966, Cien, Cult. US (22163. 
Dendrophidion Fitzinger, 1843. 
The key has been tested and is unreliable. Specimens should be 
checked against descriptions of geographically suitable species. 
D. brunneus (Gunther). Distribution: also Peru, Depto. 
Cajamarca (MVZ). 
Dipsas Laurenti, 1768 
D. elegans (Boulenger), fide Kofron, 1982, Copeia (1):46. 
1896 Leptognathus elegans Boulenger, Cat. Snis (Bir wedsh. Mus. 
3:452. Type-locality: Isthmus of Tehuantepec. 
1898 Leptognathus ellipsifera Boulenger, Proc. Zool. Soc. 
London 1898:117. Type-locality: Ibarra, western Ecuador. 
Distribution: Andes of western Ecuador. 
