31. CYPRIxVIDiE CAMPOSTOMA. 
149 
)eutled ill the abdominal cavity, and entirely surrounded by many con- 
volutions of the loug alimentary canal, which is G-9 times the total 
lihgth of the body. Ovaries similarly enclosed in the alimentary canal. 
Peritoneum black. Pseudobranchim present. Scales moderate. Lat- 
nal line present. Dorsal nearly over ventral. Anal basis short. Xo 
ipines. Herbivorous. Sexual differences vory great, the males being 
iovered with large tubercles in spring. The singular arrangement of 
;he intestines in relation to the air-bladder is peculiar to Canipostoma 
imoug all known fishes. Size moderate, {/.a/i-rj, curve 5 aru/ia, mouth.) 
' Scales small, 75-80 ia tlie lateral line ; teeth 4-4 (?). 
L70. C'. oriiatiim Grd. 
Body stout. Head large, blunt and heavy. Mouth large, the max- 
illary reaching to near the front of the large eye. Tail rather short. 
Coloration brilliant, precisely as in C. anomahim. Head 3| ; depth 4. 
D. 8 ; A. 8 ; Lat. 1. 78. Chihuahua Kiver. [Girard.) 
(Grd. Proc. Acad. Nat. Sci. Phila. 185(5, 176; Gunther, vii, 183.) 
** Scales moderate, 48-57. 
t Teeth 4-4. 
171. C. ailonialuEii (Eaf.) Ag. — Stone-roller; Stone-lugger. 
Body stoutish, moderately compressed, the ante-dorsal region becom- 
ing swollen and prominent in the adult. Snout moderately decurved. 
Scales deep, rather small and crowded anteriorly. Maxillary not reach- 
ing to opposite the front of the eye. Color brownish, with a brassy lus- 
tre above, the scales more or less mottled with dark. A dusky vertical 
bar behind the oiiercle. Dorsal and anal fins ('ach with a dusky cross- 
bar about half way uj), the rest of the fin olivmceous in females, fiery red 
in the males in the spring. Iris orange in males. Males in the spring 
with the head and often the whole body covered with large, rounded tu- 
bercles. In no other Cyprinoid are these nuptial appendages so exten- 
siv’ely developed. Head 4|-; depth 4|. D. 8 ;A. 7; scales 7-53-8; teeth 
4-4. L. G -8 inches. Extremely variable, the young very different in 
appearance from the old males. Western Xew York to Mexico, ev’ery- 
where abundant in deep or still places in small streams, running up 
small broods to spawn in spring. Herbivorous. One of the most inter- 
esting and curious of our fishes. 
{Butilus anomalu^ Raf. Iclitli. Oh. 52: Exoglossum duiiuni Kirtland, Post. Journ. 
Nat. Hist. Y, 272: Exoglossum spinieephalum Cnv. & Val. xvii, 4s9: Chondrostoma pullum 
Agassiz, Amer. Jonru. Sci. Arts, 1854, 357 : Campostoma eallipteryx, mormgrus, gobioni- 
num, and hippops Cope, Proc. Acad. Nat. Sci. Phila. 1864, 284: Camjgostoma nasutum 
