260 CTPRINIDiE. 



the caudal. Caudal fin deeply forked. Pectorals terminating at a 

 considerable distance from the vcntrals. Lateral line complete. 

 There are three and a half longitudinal series of scales between the 

 lateral line and the root of the ventral fin. A blackish line along the 

 median line of the back. Body Kght brown, with a broad silvery 

 band having dark points extending from the head to the caudal fin. 



Pharyngeal teeth 4 — 4, hooked. Gill-rakers short, pointed, few 

 in number. The attachment of the gill-membi'anes to the isthmus 

 takes place somewhat in advance of the prteopercular margin. 



Osage River. 



a. Two inches long. Presented by Th. Moore, Esq. 



This is one of two specimens sent by the Museum of Comparative 

 Zoology, Cambridge, U.S., to the Liverpool Museum, with the name 

 of Alburnus Jineolatus. In the printed Bulletin of that Museum 

 such a name is mentioned ; but there is no means of ascertaining 

 whether the specimens sent actually belong to the species for which 

 that name is intended, as the diagnosis by which this species is dis- 

 tinguished consists of a few words only, indicative of colours which 

 this species has in common with numerous other AJhurni and Lea- 

 cisd. — It will be evident from our description that this fish is not a 

 species of Alburnus. 



82. Leuciscus procne. 



Hyhognatlius procne, Cope, Proc. Ac. Nat. Sc. Philad. 1864, p. 283. 

 Hybopsis procne, Cope, Journ. Ac. Nat. Sc. Phil. xiii. p. 385, pi. IL 

 ■fig. 2. 



D. 9. A. 8. L. lat. 31. L. transv. 5/?. 

 The height of the body is about one-fifth of the total length 

 (without caudal), the length of the head somewhat less than one- 

 fourth. The free portion of the tail is more than twice as long as la- 

 deep. There are three longitudinal series of scales between the 

 teral line and the root of the ventral fin. The diameter of the eye is 

 one-third, or rather more than one-third, of the length of the head. 

 Pectoral not reaching ventral. Origin of the dorsal fin nearer to the 

 end of the snout than to the root of the caudal*. A darkish streak 

 along the lateral line. Pharyngeal teeth 5 — 4. {Cope.) 

 Conestaga River (Susquehannah) ; Delaware. 



83. Leuciscus volucellus. 



Hobognathus volucellus, Cope, Proc. Ac. Nat. Sc. Phild. 1864, p. 283. 

 Hybopsis volucellus, Cojie, Jotirn. Ac. Nat. Sc. Philad. xiii. p. 381. 



D. 1/8. A. 1/7. L. lat. 34. L. transv. 4/?. 

 Head depressed, elongate ; fins elongate, especially the dorsal ; 

 the latter is as far from the end of the muzzle as from its anterior 

 ray to the base of the caudal fin. Snout obtuse ; vertex plane. Head 

 entering (total) length to base of caudal thrice and three-fourths, 

 the greatest depth four times ; the diameter of the eye is contained 



* According to the figure it is equidistant from the two points. 



