148 



PROCEEDINGS OF THE ACADEMY OP 



[1883. 



Squalius galtise sp. nov. 



This species belongs to the group Glinostomus, where the dorsal 

 fin originates a little behind the line of the front of the ventrals, 

 and the teeth have no grinding surface. The lateral line is, on 

 the other hand, but little decurved, and there are but eight anal 

 rays (in one specimen nine). The muzzle is short and the mouth 

 oblique, without prominent chin, and with the extremit}" of the 

 maxillary bone extending a little beyond the line of the anterior 

 rim of the orbit. The interorbital region is gently and regularly 

 convex, and is as wide as the diameter of the orbit. 



The color is olive above, as far laterally as a plumbeous band 

 which extends fi'om the superior angle of the operculum to the 

 middle of the base of the caudal fin. Below this line, the sides 

 and belly are silver, except a broad band of crimson, which extends 

 from the branchial fissure, to the line of the first anal ray. Side 

 of head with a dusky band. This is the only species I have seen 

 in this region which displays brilliant colors. 



Measurements. m. 



Total length with caudal fin, .... -067 



Length to edge of opercle, -014 



Length to first dorsal ray on side, . . . "0298 



Length to first ventral ray on side, . . . '0282 



Length to first anal raj' on side, . . . "0385 



Length to base of caudal fin, .... '056 



Depth at first dorsal ray, . . * . . 'OH 



Depth at first anal ray, '0103 



Depth of caudal peduncle, '006 



Interorbital width, -0043 



This pretty species is quite abundant in Pyramid Lake. 



THASMISTES Jordan. 



This curious genus is confined to the lakes of the Great Basin. 

 One species, the G. liorus J. and G., is very abundant in the 

 Utah Lake, while the others occur on the western side of the 

 same zoological area. Two of them I discovered in Lake Klamath 

 in 1819, and I now add a fourth from Pyramid Lake. These 

 fishes are the largest that inhabit the waters of the Great Basin. 

 They are essentially Catostomi in which the fleshy lips are wanting, 

 the mouth having the characters of the majority of the Cypri- 

 nidse. 



