COTTID^E. XCY. 253 



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. T7. gobioides, 

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

 is from La Moille R., W. Vt.] 



2. U. kumlieni, Hoy. KUMLIEN'S COTTUS. A slender 

 species, with the head 3^- in length (without caudal); 

 pectorals falling just short of anal; preopercular spine 

 large, directed upwards and backwards, not much hooked; 

 dorsals and anal high; D. VI 17; A. 12. Lake Michi- 

 gan in deep water. 



** Stouter ; depth about 5 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., Va., etc., 

 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 3| in total length; eye 

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

 L. Superior. 



4. U. hoyi, Putnam. HOY'S BULL-HEAD. Body small, 

 short and thick; head 3^- in length, without caudal; pre- 

 opercle with a prominent, sharp, straight spine directed 

 backwards; below this a prominent spine directed down- 

 wards, and one or two minute spines still lower; mouth 



