31. CYPRINID^ — APOCOPE. 
209 
fiooked, with grinding surface. Scales quite small. Lateral line con- 
tinuous. Dorsal over or slightly behind ventrals. Anal basis short. - 
Size, asi)ect, and coloration of Rhinichthijs and Apocope. (A coined name, 
without meaning.) 
318. A. clirysogaster Girard. 
Body rather stout, the back slightly elevated. Head heavy, the snout 
bluntly conical, covered with tubercles in males in spring. Mouth 
small, nearly horizontal, the lower jaw included, premaxillary entirely 
below the level of the eye, the maxillary not reaching its anterior mar- 
gin, barbel minute. Eye rather large, about 4 in head. Fins well 
developed. Lateral line somewhat decurved. Color olivaceous above, 
with black spots ; yellow below ; a black streak along the sides. Head 
4^5 depth 4f. D. 9; A. 8. ; Lat. 1.90. L. 3.J inches. Eio Gila, Ari- 
zona. {Girard.) 
(Girard, Proc. Acad. Nat. Sci. Pliila. lS.5d, 187, and U. S. Mex. Bound. Surv. Ichth. 
48. ) 
319. A. metallica Grd. 
Stouter, the head shorter, and the snout more convex. Dorsal rather 
higher and narrower. Scales (in figure) considerably larger. Colora- 
tion and proportions essentially as in the preceding. Lat. 1. 75. Eio 
Gila. 
(Girard, Proc. Acad. Nat. Sci. Phila. 18.56, 187, and U. S. Mex. Bound. Surv. Ichth. 
49. ) 
91.— APOCOPE Cope. 
(Cope, Hayden’s Geol. Surv. Mont. 1871, 47*2 : type Apocope carringtoni Cope.) 
Body somewhat elongate. Mouth normal, rather small, with thickish 
lips and a terminal maxillary barbel, premaxillaries protractile. Teeth 
mostly 1, 4-4, 1, hooked, without grinding surface. Scales very small. 
Lateral line weak, often more or less broken posteriorly. Dorsal fin 
inserted behind the ventrals. Anal basis short. Isthmus broad. Size 
small. Colors dusky, with red in spring. The species are closely re- 
lated and difficult to separate, and the genus is scarcely distinct from 
Agosla. {aTzoxo-rj, a deficiency, in allusion to the incompleteness of the 
lateral line.) 
* Lateral line with 60-70 scales. 
320. A. carringtoni Cope. 
Body rather stout. Head blunt and heavy, the snout scarcely over- 
hanging the mouth; maxillary not quite reaching the line of the orbit; 
barbels minute; isthmus wide. Eye 4^ in head, IJ in interorbital 
Bull. Xat. Mus. ^lo. 10 14 
