342 PEOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



half head. Origin of aual under middle of dorsal, its base a little 

 longer than head. Caudal short, the lower lobe longer than the upper; 

 the median rays about one-third the longest. Pectorals three-fifths 

 length of head, nearly or quite reaching base of ventrals, which are 

 short and do not reach the vent. Scales moderately adherent ; dorsal 

 sheath very low; that of anal fin higher. 



D. 12; A. 27; Lat. 1. 30 + 2; L. trausv. 6. Depth, 3| in body; head, 

 3i; eye, 3 in head; B. 11-12. 



Color: Body translucent; scales with a silvery luster ; dorsal region 

 much punctate with black and with some yellow speckling which broadly 

 covers the margins of the scales ; a distinct dark median line, composed of 

 minute dark specks, along entire lengih of back; sides with a rather dif- 

 fuse silvery band, broadest anteriorly, becoming very narrow ou caudal 

 peduncle, then expanding to base of fin ; it covers less than one row of 

 scales, and is narrower than diameter of orbit ; top of head, symphysis of 

 lower jaw, and snout, with much black speckling, the snout yellowish; 

 anal fin thickly speckled at base; anterior rays of dorsal and anal, and 

 lower rays of caudal, with some faint greenish-yellow and more or less 

 black dotting; tip of caudal blackish, more distinctly so at end of lobes- 

 Common in the harbor of Mazatlan and called Sardina in common 

 with the other si)ecies of this genus, and Clupea stolifera. It reaches a 

 length of 4 to 5 inches. The many types are numbered 28121 in the 

 United States National Museum. 



T). Stolephorus exiguxis, sp. no v. (28120.) 



Allied to *S'. ciirtm, but with much slenderer body and shorter anal 

 fin. 



Body not greatlj" compressed and not elevated; belly compressed, 

 subcariuate, serrulate; head rather short, its height at nape more than 

 two-thirds its length; opercular margin not much oblique; cheek nar- 

 rowly triangular ; snout longer than two-thirds diameter of orbit ; eye 

 large, three and one-fourth in head; maxillary tapering to an acute 

 point, reaching to or nearly to opercular margin; teeth present in both 

 jaws ; in the lower minute and developed on anterior half only; in u])per 

 jaw small, but easily perceptible. Gill-rakers short, the longest not more 

 than one-half diameter of orbit. 



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

 middle of pupil; base of fin but little more than one-half length of 

 head. Origin of anal under anterior third of dorsal fin ; its base about 

 four- filths length of head. Caudal short, not nearly equaling length 

 of head. Pectorals not nearly reaching ventrals. 



Scales very deciduous. 



D. 12; A. 17; L. lat. 38; L. transv. 5. Head, 33 in length; depth, 5. 



Color translucent; scales with silvery luster; a faint silvery streak 

 along sides, widest and most distinct posteriorly, becoming faint ante- 

 riorly-, and usually disai)pearing before reaching head. Scales on back 



