107(a). COTTID^ — UKANIDEA. 695 



and Cascade Mountains; abundant; specimens from tbe Sacramento 

 River {vnr. parvus) smaller in size, paler in color and with the interor- 

 bital space concave, narrower than eye. 



{Coitus asper Rich. Faiiua Bor.-Ainer. Fish. 295, 183li: Ti'acMilermns richardnoDt ; 

 Heckel, Ann. Wiener Miis. 1840, 162: Centridermichlhys asper Giinther, ii, 170: Col- 

 topsis asper Grd. U. S. Pac. R. R. Surv. Fish. .51 : Cottopsis parvus Giraid, Proc. Acad. 

 Nat. Sci. Phila. 1854, 144: Ccntridermichthijs parvus Giinther, ii, 170.) 



1056. U. seHiiscatora (Cope) J. & G. 



Olivaceous, barred and spotted as in other species; fins mottled; 

 spinous dorsal pale at base and tip, with a median broad black band; 

 two dark blotches at base of caudal. Form of U. aspera, but slenderer. 

 Skin* of top of head and entire body, except lower part of caudal pe- 

 duncle, thickly covered with papilla3; those of anterior and upper parts 

 of body each tipped with a spine, many of those on head with median 

 l)ores; top of head with a median lengthwise depression. Head nar- 

 rowed anteriorly, the maxillary extending' to beyond pupil; opercular 

 and preopercular spines as in U. aspera ; lateral line not complete; 

 spinous dorsal low; soft dorsal and anal high; caudal long; pectorals 

 about reaching anal; ventrals rather broad, reaching half way to anal. 

 Eye ^ in head. Head 3J; depth 4^. D. VII-18; A. 14; V. I, 4. L. 4 

 inches. Fort Hall, Idaho {Cope). Utah Lake {Jordan). 



{Cotiopsis semiscaher Cope, Hayden's Survey, Montana, for 1871-'72, 476: Coifopsis 

 semiscaher Jordan & Gilbert, Proc. U. S. Nat. Mus. 1880, 459.) 



cc. Skin smooth, or prickly in or behind the axil only. {Potamocottus\ Gill.) 



1057. U. ^iilosa (Grd. ) J. & G. 



Olivaceous, variously mottled and barred; fins clouded with darker. 

 Form rather robust. Mouth moderate, the maxillary reaching to pui)il ; 

 palatine teeth evident. Eyes small, little wider than the interorbital 

 space; preopercular si)ine short; spinous dorsal low; i)ectoral fins 

 about leaching anal; ventrals I, 4, not to vent. Head 3; depth 5. D. 

 lX-21; A. 15-17 (Washington); D. VIII-20; A. 18 (California). L. C 

 inches. Rivers from California to Britisli Columbia; not rare. Cali- 

 fornia examples have the axillary prickles developed as usual in U. rich- 

 ardsoni; all of them within the space covered by i^ectorals when de- 

 pressed. Specimens from Vancouver's Island and about Port Town- 

 send have these prickles forming a considerable band, and extending 



* "Skin prickly above the lateral line; smooth below it posteriorly." (Cope.) 

 tGill, Proc. Boat. Soc. Nat. Hist, viii, 40, 18G1 : type Cottus punciulaius Gill. 

 {norajuoi, river; Horroi, sculpin.) 



