340 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



2. Pristigaster lutipinnis, sp. nov. (28126, 28209, 28320.) 



Body elougate, very strongly compresised, especially towards ventral 

 outline ; profile nearly straight from origin of dorsal to occiput, where 

 it forms a slight angle ; head small, its upper outline but little descend- 

 ing, the lower rapidly rising. Mouth large, very oblique, the lower jaw 

 longest, its tip almost entering upper profile of head ; maxillary reach- 

 ing to or slightly beyond vertical from anterior margin of pupil, its 

 length a little more than half head. Teeth large, in a single series in 

 each jaw; in the upper jaw numerous and comparatively close-set, in 

 the lower few and distant, but considerably larger 5 margin of maxillary 

 with minute, close-set teeth ; palatines and pterygoids toothed, vom'er 

 smooth. Eye very large, much longer than snout, and more than one- 

 third length of head. Gill-rakers not longer than j^upil, about 18 in 

 number ; pseudobranchire developed. 



Dorsal small, i^osterior, its origin constantly slightly nearer base of 

 caudal than occiput. Pectorals long, not nearly reaching vent, slightly 

 shorter than head. Anal shorter than in other species, its origin mid- 

 way between middle of caudal base and front of eye, its base contained 

 2§ in body ; anterior anal rays highest, a little longer than eye. Lower 

 caudal lobe longest. 



Scales thin, very readily deciduous ; ventral scutes very strong, run- 

 ning from throat to origin of anal fin. D. 13; A. 53; L. lat. 44; L. tr. 

 about 11; ventral scutes, 29 ; head, 4^ in length; depth, 3^. 



Color: Greenish-olive above, on sides silvery with a tinge of yellow ; a 

 small black spot on upper angle of preopercle, and a larger very dis- 

 tinct black humeral spot ; a black line along dorsal ridge ; end of snout- 

 and tip of lower jaw black. Anal and caudal golden yellow on basal 

 portions, the tips transparent, dotted with black ; pectorals and dorsal 

 with a yellow blotch on middle of first rays, sometimes largely yellow. 



This species is rare at Mazatlan and but few specimens were obtained. 

 It is very closely related to P. macrops and P. dovii, differing from them 

 chiefly in the fewer rays and backward position of the anal fin. The 

 tyi^es are about 6 inches long and are numbered 2812G, 28209, and 

 28320 in the United States i^ational Museum. 



3. Stolephorus ischanus, sp. nov. (28246.) 



Closely related to Stolephorus hrowni. 



Body elongate, little compressed and scarcely elevated, nearly as 

 high at nape as at front of dorsal ; belly compressed, its edge usually 

 rounded. Head long and slender, its height at occiput but little 

 greater than half its length; opercular margin very oblique, forming 

 a more or less evident angle at junction with subopercle; cheeks 

 triangular, moderately broad ; opercle short. Maxillary slender, taper- 

 ing to a blunt point, not quite reaching opercular margin; teeth 

 small, evident for entire length of both jaws, those near symphysis of 

 lower jaw slightly enlarged. Gill-rakers numerous, of moderate length, 



