CAVE FISHES OF NORTH AMERICA. 389 
darkest, consequently the sides and upper part of the body appear 
gray. There is an ill-defined dark spot at the base of the caudal 
and there are dark lines on the body at the base of the dorsal and 
anal fins. The fins vary in color from light gray to white, belly 
white. Length 2 in. 
This rare fish was first described by Putnam in 1872 from a well 
near Lebanon, Tenn., and it has very rarely, if ever, been taken since, 
so far as I am able to determine, until November, 1898, when Dr. 
C. H. Kigenmann secured 4 specimens from Mammoth Cave ‘and 
Cedar Sinks, Kentucky. The chief points which distinguish this from 
the other species of the genus are the smaller eye and the lighter color. 
Tactile ridges are present, but they are not so prominent as in C7 
papilliferus. The fish is not found outside of caves or underground 
streams. The specimens examined were those from Mammoth Cave 
and Cedar Sinks, Kentucky. 
Measurements. 
| 
| No. | Head. | Depth. /Dorsal.| Anal. | Scales. | Length. Notes. } 
here | ms | 
1 4} 6} 9 | 8 (?) 52 
bes 32 6 8 | 8} (2) 30 
ees ax 6 9 | 8 (?) 34 
4 | 8 | 8 Mutilated specimen. 
(Benes | 
| | 
Chologaster agassizii Putnam, Amer. Nat., VI, 1872, 22, well at Lebanon, Tenn., 
Mammoth Caye, Ky. Jordan, Rept. Geol. Nat. Res. of Indiana 1874 (1875), 
VI, 218 (reference to Putnam’s specimens). Hay, Geol. and Nat. Res. of 
Ind., XIX, 1894, 234. Jordan & Evermann, Fishes North and Mid. Amer., 
I, 704, 1896. Eigenmann, Proc. Ind. Ac. Sci. 1897 (1898) , 230; Eyes of the Blind 
Vertebrates of N. A., Archiv. f. Entwickelungsmech., VIII, 1899, 546; Proce. 
Ind. Ac. Sci., 1898 (1899), 239, 251; Marine Biological Lectures, 1899 (1900), 113. 
TYPHLICHTHYS Girard. 
Typhlichthys Girard, Proc. Ac. Nat. Sci., Phila., 1859, 62 (subterraneus) . 
No ventral fins present. Otherwise similar to Amblyopsis, except 
that it does not grow to be so large. The genus includes probably 
three species. : 
Typhlichthys subterraneus Girard. Pl. V, fig. 1. 
Body a little heavier than in Chologaster, its depth 6 to 6.5 in the 
length; head much depressed, 3 to 3.5 in the length; mouth large, 
oblique, lower jaw a little projecting, snout broad and rounded; eye 
entirely covered; gillcavitiessomewhat enlarged; gill membranes united 
to the isthmus; branchiostegals 6, fitting closely to the body, reaching 
back to the vent; pectoral fins 1.5 in head; front of anal a little back 
of front of dorsal; anal with 8 rays; dorsal 8; caudal rounded in per- 
fect specimens; scales similar to those of Chologaster; pyloric ececa 2. 
