48. AMBLY0PSIDJ3 CHOLOGASTER. 325 
fins. The species are of smaller size, and are found in the same waters. 
{zucpXo:;^ blind 5 iyOhq^ fisb.) 
521. T. subJerraBicus Grd. 
Colorless. Head rather blunter and broader forwards* than in A. 
spelccus. Month smaller, its cleft shorter than base of dorsal. Pecto- 
rals scarcely reaching dorsal. One pyloric coeciim. H. 7 or 8; A. 7 
or 8. L. 2 inches. Subterranean streams of Kentucky, Tennessee, and 
Alabama. 
(Girard, Proc. Acad. Nat. Sci. Pliila. 1859, 62; Putnam, Amer. Nat. 1872, 30, fig.) 
155.— CHOLOGASTER Agassiz. 
(Agassiz, Amer. Journ. Sci. Arts, xvi, 135, 1853: type Chologastcr cornutus Ag.) 
This genus has the general characters of AmblyopsiSy but dilfers in 
the absence of ventral fins and in the fully developed condition of the 
eyes, which are small and lateral. The species are not pellucid, but 
colored like ordinary fishes. Ko papillary ridges. Pyloric cceca 2. 
Ditches and cave-streams, maimed; yaarrip, bellj'; in allusion 
to the abortive veutrals.) 
522. C. coi'BiistCDS Ag. 
Yellowish brown,, dark above; sides with three dark longitudinal 
stripes, becoming dots on the tail; middle rays of caudal fin dark; 
fins otherwise uucolored. Mouth moderate, oblique, the maxillary^ not 
extending to the eye. Pectorals reaching nearly to front of dorsal, 
perfect, small. Snout with two horn-like projections. Head 3^; depth 
4J. D. 8 or 9; A. 8 or 9. L. 2^ inches. Ditches in a rice-field, Wacca- 
maw, S. C. {Putnam.) 
(Agassiz, Amer. Journ. Sci. Arts, 1853, 135; Giintlier, vii, 2; Putnam, Amer. Nat. 
1872, 30.) 
523. C. agassizi Putnam. 
TJniform light brown; fins somewhat speckled. Head 4 in body, its 
length scarcely greater than the greatest depth. Pectorals reaching 
little more than half way to front of dorsal. D. 9; A. 9. L. inches. 
{Putnam.) Subterranean streams in Tennessee and Kentucky. 
(Putnam, Amer. Nat. 1872, 30, fig.) 
A specimen of Chologaster obtained by Prof. S. A. Forbes in a cave- 
stream of Southern Illinois does not agree well with either of the above 
species. The following description has been furnished us by Professor 
Forbes : 
The head is 7^““ long, and the body, without head or tail, 19“™. Head in length, 
therefore, 3J times. The eye is above and well behind the maxillary, and goes about 
