1899.] NATURAL SCIENCES OF PHILADELPHIA. 341 



B regiUm aud other species. Lateral stripe covering ^ + 2 + i 

 scale rows, the silver being replaced anteriorly by dark plum- 

 beous. 



One specimen, 1. 255 mm. No. 6.069 in the Leland Stanford, 

 Jr. Univ. Mus. 

 35. Basilichthys jordani Abbott. New species. 



In the presence of vomerine teeth aud in the development of the 

 lower jaw, this species approaches Chirosfoma. But in its appear- 

 ance aud the smallness of its scales it is a typical Basilichthys. 



The striking diflerence in appearance between fishes of the genera 

 Basilichthys and Chirostoma seems to lie not so much in the 

 strengthening of the mandible in the latter, as in the more notice- 

 able Aveakening of the upper jaw, so that the lower jaw projects 

 aud forces the mouth into a strongly diagonal slant. In Basilich- 

 thys the upper jaw is as strong as the lower and slightly projecting, 

 and the mouth is almost horizontal. 



Head 4^; depth 5^; eye 5 in head; 1^ in inierorbital, snout 2 J. 

 D. VI-I, 10; A. I, 16. 



Body rather thick, head (puidraugular. Mouth moderate, the 

 lower jaw stronger than in other related species, even with, or very 

 slightly projecting beyond upper. Teeth comparatively strong. 

 Vomerine teeth prominent, in a triangular patch, scattering at the 

 sides. Gill rakers 7 + 25. Scales small, 14 series at ventrals, 

 10 on tail, 87 from opercle to root of caudal, some of them radially 

 striate. 



Pectoral If, ventral 3 in head. First dorsal inserted nearer tip 

 of snout than root of caudal by somewhat less than the diameter 

 of the eye, its first spine vertically above tip of ventral. Inter- 

 dorsal space 5i in body length. Second dorsal inserted above 

 eighth anal ray. Color as in other related species. Medic-dorsal 

 lines present but obscure. Stripe covering ^ + 2 + |- scale rows 

 at middle of body. 



Length 235 mm. No. 6,070 in Leland Stanford, Jr. Univ. 

 Mus. A cotype, No. 6,073, in the same collection has the head 

 4 in length and seven spines in the first dorsal. Length 250 mm. 



It gives me great pleasure to name this species for President 

 David Starr Jordan, of Leland Stanford, Jr. University, to whose 

 friendly interest and wealth of experience and knowledge the 

 younger students of ichthyology in this country owe so much. 



