31. CYPRINID.E APOCOPE. 209 



{looked, with grinding- surface. Scales quite small. Lateral line con- 

 tinuous. Dorsal over or slightly behind ventrals. Anal basis short. 

 Size, aspect, and coloration of RhinicMhys and Apocope. (A coined name, 

 without meaning.) 



318. A. cBirysogaster 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 bead. Fins well 

 developed. Lateral line somewhat decurved. Color olivaceous above, 

 with black spots ; yellow below ; a black streak along the sides. Head 

 4-V ; depth 4f . D. 9 ; A. 8. ; Lat. 1. 90. L. 3.J inches. Rio Gila, Ari- 

 zona. ( Girard.} 



'(Girardj Proc. Acacl. Nat. Sci. Phila. 1850, 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. 1856, 187, and U. S. Mex. Bound. Surv. Ichth. 



40.) 



91. APOCOPE Cope. 



(Cope, Hayden's Geol. Surv. Mont. 1871, 472: 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 

 Agosia. (dnnxnxTj, a deficiency, in allusion to the incompleteness of the 

 lateral line.) 



* Lateral line with 60-70 scales. 



32O. A. carriMgtoni 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, 1 in interorbital 

 Bull. Nat. Mus. No. 16 14 



