1326 Bulletin //, United States National Museum. 



the fins smaller and more scaly, (fipaxvt, short; devrepot, second; the 

 typical species (auritus) was placed by Cuvier & Valenciennes in the 

 Sciamoid genus Larimus, from which it was supposed to differ in the shorter 

 second dorsal. The name would better apply to the short second anal spine. ) 



a. Pectoral fins short, much shorter than head; anal spines very small. 

 b. Prcorbital narrow, not as broad as eye. 



c. Second anal spine shorter than the third; body rather elongate, the mouth 

 small, the maxillary not quite reaching front of eye. A large blackish 

 rounded blotch nearly ad large as eye, behind the supraseapula, at the 

 origin of the lateral line. NITIDUS, 1695. 



cc. Second anal spine about equal to third in length, but stouter, 3 to of in 

 head, relatively larger in smaller specimens ; a diffuse dark blotch on 

 scapular region, very faint in the larger specimens. 



CORVIN^EFORMIS, 1696. 



bb. Preorbital broad, wider than eye, 3| to 4 in head; anal spines not graduated; 



maxillary not reaching the eye; sides with indistinct dark streaks or none; 



no dark scapular blotch. LEUCISCUS, 1697. 



aa. Pectoral fins long, nearly equal to head; preorbital broad, about as wide as eye. 



Body rather robust, the back elevated, the profile even. Axillary blotch large, 



black, encroaching upon the rays of the pectoral fin. AXILLARIS, 1698. 



1605. BRACHYDEUTERUS NITIDUS (Steindachner). 



Head 3; depth 3; eye 3f ; snout 3. D. XII, 15; A. Ill, 8; fourth dorsal 

 spine 2; second anal spine nearly 4; pectoral If; scales 6 or 7-52-10. 

 Body moderately elongate, compressed, the back evenly arched; head 

 pointed, the mouth small, maxillary not reaching to eye ; preorbital nar- 

 row, not so wide as eye; posterior edge of preopercle finely and evenly 

 serrate; gill rakers short and slender, about 7+10. Dorsal not deeply 

 notched, longest ray 1J in longest spine; anal spines very small, the sec- 

 ond shorter than third; pectoral much shorter than head, not reaching 

 much past tips of ventrals, which reach halfway to base of first anal 

 ray; caudal lunate. Silvery, darker above, with dark streaks along the 

 rows of scales, especially distinct below lateral line; a large round blotch 

 at beginning of lateral line, about as large as eye; fins plain. Length 10 

 inches. Pacific coast of tropical America ; known from Mazatlan, Panama, 

 and the Gulf of California, (nitidus, shining.) 



Pristipoma ( Hcemulopsis ) nitidum, STEINDACHNER, Ichth. Notizen, vm, 5, pi. 3, 1869, 



Mazatlan, Mexico. 

 Pomadasis nitidus, JORDAN & FESLER, I. c., 494; JORDAN, Fishes of Sinaloa, 462, 1895. 



169G. BRACHYDEUTERUS CORVDLEFORMIS (Steindachner). 



Head 3 to 3; depth 3J; eye 3f to 4 in head ; snout 2J- to 3. D. XII, 15; 

 A. Ill, 7 ; scales 6-51-10. Upper profile regularly arched from snout to tail, 

 the highest point at origin of dorsal; lower profile nearly straight to base 

 of anal; preorbital slightly less than eye; maxillary not reaching eye, 3 

 to 3^ in head; anterior nostril oval, twice the size of posterior; preopercle 

 finely toothed, about 20 teeth on upper limb, increasing slightly in size 

 toward angle; dorsal notched almost to base, fourth spine longest, 2^ to 2^ 

 in head; longest soft ray (second) equal to or slightly less than longest 

 spine; pectoral pointed, 1 to if in head; ventral broad, the margin 



