ON THE SPECIES OF THE GENUS CHALCINUS. 5 
the first ray of the dorsal and the lateral line, and between the 
Litter 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. n. 
D. 11, A. 24 (23), V. 7, L. 1. 32, L. tr. ^^. 
This species may be classed with the angulata 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 band on the extremity of the fin. 
