30. CATOSTOMID^E — PANTOSTEUS. 
123 
this species it has, however, nothing- else in coimuou. ^‘Ilead wide, 
nuizzle not projecting beyond upper lip; latter not pendant, with 
narrow, smooth commissure and 3 or 4 rows of tubercles. Lower 
lip deeply incised, tnbercnlar to near inner edge. Eye 5.25 times in 
length of head, twice in interorbital width. Head 5 times to end of 
basal candal scales. Form stont. Body cylindric anteriorly. Dorsal 
tin nearer end of muzzle than end of candal scales. Scales of body 
snbeqnal, in 30 longitudinal rows between dorsal and ventral tins, 
latter originating beneath hinder border of dorsal, not quite reaching 
vent. , Pectorals well separated. Isthmus wide, narrower than in JJ. del- 
pliinus. Color blackish above; a broad olive baud from upper part of 
opercular border along ni)per half of caudal peduncle, and a broad black 
band below, narrowing to a line along the middle of the peduncle ; be- 
low, yellowish, a band of the same cutting off a blackish area above the 
axilla, as in the last species.” {Cope.) Probably from Green Eiv'cr. 
This species and the two preceding are not well separated. 
{Miuomus hurdus Cope, Hayden’s Geol. Surv. Wyom. Terr. 1872, 436.) 
Art. Scales Ycry miicli reduced and crowded anteriorly ; npper lip full, licndent ; car- 
tilaginous slieatlis on jaws well developed, the commissure transverse and 
abruptly angulate at the corners of the mouth. 
126. P. p3atya’r2ayBac2aMS Cope. 
Body extremelj" elongate, the depth 5i-7 in length. Etead 4^ in 
length, short and wide, with depressed and expanded muzzle, which 
considerably overhangs the mouth. Isthmus very wide. Dorsal rays 
11; ventral rays 9; scales 15-80-12. Belly and lower tins yellowish, 
probably red in life. Utah Lake. Perhaiis identical with the next. 
(Minoinus platyrhijnchus Cope, Proc. Amer. Phil. Soc. Phila. 1874, 134; Jordan, 1. c. 
183.) 
F. gcaaei’osaas (Girard) Jordan. 
Body moderately elongate, the depth 45-5 in the length. Head 
rather short, 4§ in length, not specially broadened ; muzzle not greatly 
overhanging the mouth. Lower lip full, with 4 or 5 rows of tubercles; 
upper with 2. Isthmus very broad. Dead with conspicuous mucous 
tubes. Lower fins large. Dorsal rays 9 (rarely 10); ventral rays 10 
(rarely 9) ; scales 11 to 14-83 to 87-13 to 15. Light brown above, with 
dusky spots and clouds; males with the chin and fins red, and a crim- 
son lateral band. Eio Grande to Mojave Desert and Great Basin of 
Utah; very abundant. 
V 
{Catostomns (jcnerosus Girard, Proc. Acad. Nat. Sci. Phila. 1856, 174: Minomus jarro- 
vii Cope, Proc. Amer. Phil. Soc. I’hila. 1874, S5; Jordan, 1. c. 183.) 
** Scales very small, 100-105 in the lateral line. 
