PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 341 



the longest about two-thirds diameter of orbit. Snout long, about 

 three-fourths length of orbit, ^yhich is large and contained three and 

 three-fourths times in length of head. Dorsal fin with upper margin 

 straight, the posterior rays not prolonged; origin of dorsal about equi- 

 distant from base of median caudal rays and front of orbit. Origin 

 of anal under base of posterior dorsal rays, midway between front of 

 orbit and tip of caudal ; its base very short, less than two-thirds length 

 of head. Caudal very short, much less than length of head, the lower 

 lobe the longest. Pectorals broad and short, not nearly reaching base 

 of ventrals, which reach about one-half distance to front of anal. Scales 

 thin, moderately deciduous. 



Head, 33 in length; depth, 5; eye, 3 J in head. D. 13; A. IG; Lat. 1. 

 39 -f 2 ; L. tr. 7. 



Color: Translucent, with silvery luster; a sharply-defined, bright 

 silvery band on sides, broadest opposite middle or end of anal, and 

 tapering each way ; the streak is confined to a single series of scales 

 (being distinctly narrower than in >S'. hroicni)-, sides of head bright sil- 

 very; top of head blackish above orbits; two large, well-defined clus- 

 ters of black dots behind occiput, one on each side of median line; 

 between dorsal and occiput from one to three series of scales black mar- 

 gined; behind dorsal the median series only thus margined. Median 

 line of back with a black streak the entire leiigtli; tip of snout, median 

 line of head anteriorly, and region behind orbits black-specked. 



This species is very common in the harbor at Mazatlan, reaching a 

 length of 2| to 3 inches. The types are numbered 2924G U. S. Nat. 

 Mus. This is apparently the species recorded by Steindachner from the 

 west coast of Mexico as Enf/mulis hrowni. The latter species has a 

 deeper body, distinctly broader silvery stripe, and a larger number 

 (19-20) of rays in the anal fin. 



4. Stolephorus lucidus, sp. nov. (^Sl^l.) 



Body closely compressed but not greatly elevated, the dorsal outline 

 with a very weak arch ; belly more curved, carinate in front of aual fin, 

 but not serrate. Head short, rather pointed, the margin of opercle and 

 subopercle forming an even curve which is but little oblique. 



Maxillary narrow, pointed, reaching to or slightly beyond mandibn- 

 lary joint, but not to gill-opening ; teeth very evident along entire 

 length of maxillary and mandible, becoming larger towards symphysis 

 of lower jaw ; snout short, projecting, about one-half diameter of orbit, 

 which is about one-third length of head ; cheeks oblique, V-shaped, the 

 length more than half head; opercle moderate; gill-rakers not very 

 numerous and rather short, the longest not more than one-half diam- 

 eter of orbit. 



Origin of dorsal fin midway between base of middle rays of caudal and 

 front of orbit ; upper margin of dorsal straight, the last rays not pro- 

 longed. Dorsal much higher than long, its base equaling about one- 



