152 BULLETIN 90, UNITED STATES NATIONAL MUSEUM. 



maxillary scaly; premaxillaries, mandible and branchiostegal mem- 

 branes without scales; scales on fins smaller than those on body; 

 dorsal and anal confluent with the caudal, a slight notch in tip of 

 caudal; dorsal and anal low, about equal in height to diameter of 

 eye; ventrals composed of a single bifid ray reaching to below 

 posterior edge of head. 



Color in alcohol, dusky olive with a brownish tint on back ; several 

 rows of very obscure round brownish spots on body, most distinct 

 on tail, almost imperceptible when the fish is dry; fins body color; 

 dorsal narrowly margined with gray ; anal rather broadly margined 

 with purplish black shading into body color. 



This species is quite distinct from B. hao^hata^ the Atlantic form. 

 It is slenderer than that species or either of the Hawaiian spiecies, 

 and is the only species of the genus recorded from the Pacific coast 

 of America- 

 Genus PORICHTHYS Girard. 



183. PORICHTHYS AFUERAE. new species. 



Plate 14, fig. 1. 



One specimen, field No. .09-i89Z^, 12.6 cm. in length, from Lobos de 

 Afuera. 



Tyye.—Q^i. No. T7552, U. S. Nat. Mus. 



Head 3 (3.G total) in length; depth 5.1 (6.1); eye 5.83 in head; 

 snout 4; maxillary 2.05; interorbital 3.3; pectoral 1.1; ventral 2.84; 

 D. II, 33; A. 31; V. I, 2. 



Body slender, compressed, tapering; head long, depressed, its 

 breadth 1.58 in length; interorbital broad, flat; lower jaw projecting; 

 snout rounded; teeth in lower jnw in a single row, unequal, canine- 

 like, recurved, those in upper jaw smaller, equal in size; teeth on 

 l^alatines in a single long row; two strong recurved teeth on the 

 sides of the vomer, in the same straight line with the palatine row 

 jind separated from them by a slight interspace, the second of these 

 much longer than the first; eye small, about 2 in interorbital width; 

 opercular spine long and slender, only the tip projecting through the 

 integument. In this species the lines of phosphorescent organs are 

 essentially the same as in P. margaritatus^ but much smaller and less 

 clearly defined, in some places being almost invisible. 



Dorsal and anal uniform in height, not confluent with the caudal; 

 caudal rounded; ventrals short, anterior in their insertion, tips 

 barely reaching base of pectorals; pectorals long, as long as that part 

 of head anterior to tip of opercular spine. 



Color in alcohol, sides and belly silvery white; back dusky gray, 

 crossed by four broad brownish black saddles, these considerably 

 wider than the interspaces, extending to middle of sides; alternating 

 with the saddles are small spots of the same color; four oblique 



