304 Bulletin 47, United States National Museum. 



503. PHENACOBIUS URANOPS, Cope. 



Head 4|; depth 6; eye3|. D. 8; A. 7; scales 7-60-6; teeth 4-4. Body 

 very slender, little compressed; back not elevated, caudal peduncle long 

 and slender. Head long and rather slender, flat above, the muzzle broad, 

 blunt, and projecting. Mouth entirely inferior, larger than in the other 

 species, with conspicuous lips. Eye large, placed high, behind middle of 

 head. Scales small, 24 in front of dorsal. Lateral line straight. Breast 

 and middle line of belly naked; width of isthmus half length of head. 

 Fins small. Color pale olivaceous, with a distinct dark spot at base of 

 caudal. Upper Tennessee Basin, rather common in river channels, not 

 ascending brooks, (ovpavbg , sky ; wi/, eye; =rstargazer.) 



Phenacobius uranops, COPE, Proc. Ac. Nat. Sci. Phila., 1867, 9G, Holston River, Saltville, Vir- 

 ginia ; (Coll. Cope) ; JORDAN & GILBERT, Synopsis 206, 1883 ; JORDAN, Bull. U. S. Fish 

 Comm., vni, 1888, 146. 



504. PHENACOBIUS CATOSTOMTJS, Jordan. 



Head 4i to 5; depth 5f; eye 3|. D. 8; A. 7; scales 7-60-5; teeth 4-4. 

 Body rather slender, nearly terete, scarcely compressed; back not elevated; 

 caudal peduncle stout. Head deep, the muzzle blunt and" heavy, the 

 cheeks tumid. Mouth small, inferior, altogether below level of eye, the 

 maxillary barely reaching nostrils ; lips much thinner than in P. uranops. 

 Eyes large, high up, behind middle of head. Scales small, thin, loosely 

 imbricated ; back and belly scaled ; breast naked. Lateral line nearly 

 straight ; 22 scales in front of dorsal. Fins all small. Width of isthmus 

 2| to 3 in head. Pale olivaceous ; white below ; a silvery lateral band, 

 underlaid by dusky, which forms vague blotch at base of caudal ; back 

 dusted with dark specks ; top of head black ; a yellowish vertebral line. 

 Length 4 inches. Alabama Basin, rather common. (Catostomus, a sucker, 

 which it much resembles.) 



Phenacobius catoslomus, JORDAN, Ann. Lye. Nat. Hist. N. Y., 1876, 332, Etowah and Oosta- 

 naula rivers, Rome, Georgia. (Type, No. 17889. Coll. Jordan & Gilbert.) JORDAN & 

 GILBERT, Synopsis, 206, 1883. 



126. EVARRA, Woolman. 



Evarra, WOOLMAN, Bull. U. S. Fish Comm., xiv, 1894, May 3, 1894, 64, (eigenmanni). 



Body long and low, formed as in Tiaroga, subterete and covered with 

 very small scales. Head small, bluntish and thick at tip ; mouth very 

 small, terminal, oblique, without barbels, the lips thickish ; the upper 

 jaw protractile, but not much movable. Eye moderate; isthmus moder- 

 ate; lateral line complete. Dorsal low, inserted rather posteriorly; anal 

 small and short. Teeth small, 4-4. Intestine about as long as body. 

 One species known, from Mexico. (Evarra, an Indian name, " maker of 

 gods in lands beyond the sea.") 



505. ETARRA EIGENMANNI, Woolman. 



Head 4; depth 5i; snout 3 in head; eye small, 4. D. 8; A. 7; scales 

 about 17-88-10 ; teeth 4-4 ; intestine as long as body. Body long and low, 

 subterete, looking like a small sucker; head small, the snout anteriorly 

 truncate, the interorbital space broad and flattish; mouth short, mostly 



