(554 



ZOOLOGY— FISHES. 



9 ; V. 8 ; pectoral fin reaching ventrals ; ventrals extending beyond first 

 anal rays ; dorsal and caudal fins short. Total length, m .0G8 ; length to 

 basis of caudal fin, m 055 ; length to basis of first dorsal ray, m .030. 



Color of back and upper part of sides malachite-green, sending a darker 

 green band down behind operculum. Head and belly vemiilion-red, send- 

 ing upward a large quadrate vermilion spot behind the scapular green band. 

 Paired and anal fins crimson ; caudal vermilion ; dorsal fin olivaceous. 



Specimens of the above character were very abundant at San Ildefonso 

 in September. At the same time, individuals were equally common, which 

 differ from them in the uniform olive and silvery coloration, and in the 

 usually one less ray in the anal fin. In eleven specimens selected at ran- 

 dom, I find eight with anal radii I. 8, and three with I. 9. There are tran- 

 sitions to the other type, and I believe these forms to be the males and 

 females of one species 



No. 



Locality. 



Date. 



Collector. 



156 <? and 

 159 9 





Aug., 1S74 



Dr. H. C. Yarrow and Prof. E. 

 D. Cope. 





HYPS1LEPIS JUGALIS, Cope. 

 Moniana jugalis, Cope, Ann. Eep. IT. S. Geol. Surv. Terrs. 1S70, 439. 



General characters identical with type specimens from the Missouri 

 River, but different in the existence of a masticating face on the teeth of 

 adults, and the frequent occurrence of only I. 8 rays in the anal fin. 



No. 



Locality. 



Date. 



Collector. 



A 1 



Pueblo, Colo. 





July, 1874 



C. E. Aiken. 





HYBOPSIS, Agass. ' 



Hybojms, Cope, Synopsis of Cyprinklae of Pennsylvania, 35G-379. 



DYBOPSIS TIMPANOGENSIS, Cope. 



Hyb(>2)sis timpanogen&is, Cope, Proc. Am. Phil. Soc. Phila., 1874, 134. — Id., Plagop. & 

 Icutby. Ctab, 1874, 10. 



A rather compressed species, with mouth obliquely descending, and 

 teeth 2.4-4.2, with strongly developed masticatory surfaces. The lateral 



