ON THE SPECIES OF THE GENUS CHALCINUS. 5 



the first ray of the dorsal and the lateral line, and between the 

 latter and the ventral but a single one. Taking one from 

 the San Francisco river as a typical specimen, it is found to 

 have thirty-two rays in the anal, thirty-one scales in the 

 lateral line, counting those on the tail with the others, 

 and its length is about two and one-half times its height or 

 nearly three and three-fourths times the length of the head. 



CHALCINUS PICTUS Sp. 11. 



D. 11, A. 24 (23), V. 7, L. 1. 32, L. tr. JL. 



This species may be classed with the augulata group. 

 Though not quite as slender as the next in order, it bears 

 some resemblance in shape. 



A specimen from Jutahy, of five and one-eighth inches, 

 has a length of three times the height or four times the 

 length of the head. There are five scales between the first 

 ray of the dorsal and the lateral line, one between the lat- 

 ter and the ventral, and two between the lateral line and 

 the lower edge of the body. Barbels small ; labial folds 

 well marked ; intermaxillary teeth in two slightly irregular 

 series. Eye moderate ; its diameter is more than one-third 

 of the length of the head and nearly twice the length of 

 the snout. Head rather broad, not very convex between 

 the orbits, which latter are little narrower than the inter- 

 orbital space. The base of the anal begins a little distance 

 behind the end of that of the dorsal. 



Color, in alcohol, golden, lateral edges of scales brown- 

 ish, top of head light, back little darker. A triangular 

 patch of brown is seen on the pectoral fin, near the base ; 

 behind this there is a band of light color, parallel with the 

 posterior border, which is narrowly edged with dark. 

 The middle rays of the caudal are dark ; on each side of 

 this dark band there is a light area in front of a transverse 

 black baud on the extremity of the fin. 



