DISTRIBUTION OF THE AMBLYOPSIDAE. 75 



it possible, on one of three visits, to ascend the stream to a pile of fallen rocks from 

 under which the water flows and which makes further progress impossible. This 

 stretch is not great. It was noted for the abundance of blind crawfish ; no blind fishes 

 were found here. On the right side of this stream, near the entrance, an older, dry 

 channel leads off. At the end of the gallery a small rivulet runs to the left through 

 a series of small pools separated by thin vertical partitions ; to the right it expands 

 into a broad stream, quite shallow, but with such a depth of soft mud at the bot- 

 tom that progress was impossible without a boat. In this expanse Ty phlichthys 

 osborni was very abundant. In the fall of 1907 this cave was visited again, but no 

 fishes were found where previously they had been abundant. 



Below the dam in the main cave the stream is swift and the floor so rock-strewn 

 that progress is difficult and dangerous and fishing unprofitable. 



Typhlichthys wyandotte Eigenmann. 



Ty phlichthys subterraneus, Eigenmann, Proc. Ind. Acad, Sci. 1897 ( I 898), p. 23c, Corydon, Ind.; not of Girard. 

 Typhlichthys wyandotte, Eigenmann, Biol. Bull., vm, Jan., 1905, p. 63. 



Typhlichthys ivy and otte is known from a single specimen from Corydon, Indi- 

 ana, sent in 1886 by Superintendent Funk of the schools of Corydon to Indiana 

 University. This is the only record of the genus north of the Ohio River. Repeated 

 efforts to secure additional specimens have failed. 



Key to the Chologasters. 

 a. Eye large, contained 5.5 times in the length of the head. 



b. Eye over 1 mm. in diameter; tactile papilla; very small; sides with 3 well-defined longitu- 

 dinal lines cornutus 



bb. Eye less than 1 mm. in diameter; tactile papilla; large ...... papilliferus 



aa. Eye contained 10 times in the length of the head; color very faint ..... agassizii 



Chologaster cornutus Agassiz. 



Chologaster cornutus, Agassiz, Amer. Jour. Sci. and Arts, xvi, 1853, p. 135, Ditches of rice fields at Waccama in 

 S. C. — Gunther, Cat. Fishes Brit. Mus., vii, 1868, p. 2. — Putnam, Amer. Nat., vi, 1872^.30. — Jordan 

 and Gilbert, Synopsis Fishes of N. A., 1883, p. 325. — Gilbert, Bull. U. S. Fish Coram., viii, 1888, p. 22, 

 Okefinokee Swamp, Millen, Ga. — Jordan and Evermann, Fishes North and Mid. Amer., i, 1896, p. 

 703. — Eigenmann, Degeneration of Eyes of Amblyopsidae, its Plans, Processes, and Causes, Proc. Ind. 

 Acad. Sci., 1898, p. 239 (summary) ; Eyes of the Blind Vertebrates of N. Amer., Archiv f. Entwickelungsmech., 

 viii, 1889, p. 543; Marine Biological Lectures, 1899 (igoo), p. 113. 



Chologaster avitus, Jordan and Jenkins, in Jordan Proc. U. S. Nat. Mus., viii, 18S8, p. 356, pi. 44, fig. S, Outlet 

 of Lake Drummond, Dismal Swamp, near Suffolk, Va. — Cox, Report Bureau of Fisheries for 1904, p. 

 386 (issued 1905). 



The Chologasters have a wide and discontinuous distribution. Chologaster 

 cornutus Agassiz has been found in the ditches of rice fields in South Carolina ; in 

 the Okefinokee Swamp at Millen, Georgia ; and in the Jericho Canal near Suffolk, 

 Virginia, in an outlet of Lake Drummond. Its range is entirely east of the Alle- 

 ghany Mountains, and it is found in lowland streams only. I visited the locality 

 near Suffolk, but found no specimens. 



Chologaster papilliferus Forbes. Plate 1, Fig. A. 



Chologaster papilliferus, Forbes, Amer. Nat., March, 1881, and Jan., 1882, Cave spring in southern Illinois. — 

 Jordan and Gilbert, Synopsis Fishes N. A., 1883, pp. 325, 890. — Jordan and Evermann, Fishes 

 North and Mid. Amer., 1, 1896, p. 704. — Eigenmann, Proc. Ind. Acad. Sci., 1897 (1898), p. 231; 

 Degeneration in the Eyes of the Amblyopsidae, its Plans, Processes, and Causes, Proc. Ind. Acad. Sci., 

 1S98, p. 239 (summary); Eyes of the Blind Vertebrates of N. A., Archiv f. Entwickelungsmech., 1899, 

 p. 545; Marine Biological Lectures, 1899 (1900), p. 113. 



Chologaster papilliferus Forbes is known only from cave springs in Clinton and 

 Jackson Counties, Illinois. Most of the specimens have come from a spring in 

 Jackson County, Illinois. 



