244 FISHES. 



ray of second D., and first of anal; head 4 in total 

 length; eye 4 in head; grayish, mottled. D. VIII 16; 

 A. 11 or 12. New England and New York; the common 

 Eastern species, found " quiescent " under stones, after 

 the manner of the Darters. (U. quiescens, DeK.) [U. 

 boleoides (Grd.), from Vermont, is said to be slenderer, 

 and with larger fins. U. formosa, (Grd.) from stomachs 

 of Lota, in deep water, L. Ontario, is more elongate, with 

 shorter fins; it needs further examination. * U. gobioides, 

 (Grd.) is larger, much stouter and with larger mouth. It 

 is from La Moille R., W. Vt.] This genus is not suffi- 

 ciently distinct from the next. Pegedichthys is the older 

 name. 

 ** Stouter ; depth about 5J in total length. 



2. U. viscosa, (Haldeman) Cope. SLIPPERY MILLER'S 

 THUMB. Pectorals scarcely reaching second dorsal; 

 head 4 in total length; eye 5 in head; body sub- 

 cylindrical, covered with a viscid skin; dusky, mottled; 

 D. VIII-17; A. 12. Streams of Penn., Md., W. Va., 

 etc. (Youghiogheny R., Jordan), frequent, often found in 

 caves. (C. copei, Abbott.) 



3. U. franklini, (Ag.) Jordan. FRANKLIN'S COTTUS. 

 Pectorals scarcely reaching second dorsal; first dorsal 

 scarcely lower than second; head 3f in total length; eye 

 4i in head; D. VIII 17; A. 12. S. and E. shores of 

 L. Superior. 



4. U. hoyi, Putnam, Mss. HOY'S BULL -HEAD. Lake 

 Michigan. Description not yet published. 



2. PEGEDICHTHYS, Rafinesque. SPRING FISHES. 



= Potamocottus, Gill.- 



1. P. icfa/urops, Raf. CAVE BULL -HE AD. BIG 

 MILLER'S THUMB. CAT'S EYE SPRING FISH. GOBLIN. 



