126 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 
than one-third the head. Coloration silvery ; the males prol3al)ly rosy 
and tnhercnlate in spring-, Gila region to Wyoming; not abnndant. 
(Baird & Girard, Proc. Acad. Nat. Sci. Phila. 1853, 388; Giintlidr, vii, 14 ; Jordan, 
1. c. 178 : ?? Catostomus (jiizmaniensis* Girard, Proc. Acad. Nat. Sci. Phila. 185G, 173.) 
131. C. reti’©E5iatai§ Jordan. 
Body long and slender, snhterete, compressed behind, the form es- 
sentially that of C. longirostris^ the depth contained 5i times in the 
length. Head large, 4 in length of body, the interorbital space broad 
and tiat, 2i in length of head. Eye small, high np and rather jmsterior. 
Breorbital bone very long and slender, its length about 3 times its 
de^ith. Month large, precisely as in 0. lafipinniSj the upper li]) pendent, 
very large, with 5-8 series of tubercles. Dorsal tin not elongated or 
especially elevated, its rays 11, the beginning of the dorsal much nearer 
base of caudal than snont. Caudal fin long and strongly forked. Anal 
fin long and high, reaching base of caudal. Ventrals not reaching vent. 
Caudal peduncle stout and deep, its least depth more than one-third 
length of head ; its length about two-thirds that of head. Scales ipiite 
small, about as in longirostris, the exposed iiortion not notably length- 
ened. Chest with well-developed scales. Scales 10-100-14. Colora- 
tion dusky brown, a dusky lateral baud, pale below, the dark colors ex- 
tending low. Snout rpiite dark. Size large. Montana to Nebraska. 
(.Jordan, 1. c. 178.) 
ih. Upper lip comparatively thin and narrow, with hnt few (3 or 4) rowa of X)apill8e. 
132. C. lOEUg’ili’OSlrflS Le Snenr. — Long-nosed Sucker; Xorthern Sucker. 
Body elongate, subterete, the depth 4|-4A in length. Head quite 
long and slender, 44-45 in length, depressed and flattened above, broad 
at base, but tifpering into a long snout, which considerably overhangs 
the large mouth. Lips thick, coarsely tuberculate, the upper lip nar- 
row, with 2 or 3 rows of tubercles. Eye rather small, behind the mid- 
dle of the head. Scales very .small, much crowded forwards, 95-114 in 
the course of the lateral line, and about 29 (20-31) in a cross-row from 
dorsal to ventrals. Dor.sal rays 10 or 11. Males in .spring with the head 
and anal fin profnselj* tuberculate, the tubercles on the head small ; the 
sides at that .season witli a broad ro.sy band. Size, large; the largest 
.species in the genus. Great Lakes and Copper Mississippi Valley to 
* This is probably a distinct .species. It is stouter than C. latipinnis, with shorter 
anil deexier candal peduncle and lower lius. A blackish lateral band. JJ. V-i ; Lat. 1. 
about 90. Upper lixi with 4 rows of papilhe. The original tyi)c from Lake Gu/.mau, 
Chihuahua, is now lost. 
