8 BULLETIN 18 0, UNITED STATES NATIONAL MUSEUM 



inner edge of gill opening near isthmus, a similar nolch in opercular ap- 

 paratus Spratelloides atrofasciatus, new species 



1&. Sides of body without a black lateral band ; instead, back is blackish and 

 sides are silvery. 



2a. Original of dorsal nearer to end of snout than to base of caudal fin by a 

 distance equal to a little more than diameter of eye; anal rays 11 or 

 12 ; dorsal 11 or 12 ; scales said to be 36, but on Kner and Steindachner's 

 figure I count 40 or 41 ; pectoral 12 ; pelvics inserted under middle of 

 depressed length of dorsal or under two-thirds the distance along base 

 or dorsal; snout about equal to diameter of eye, and 3% in length of 

 head ; head 4 times in standard length ; depth 5 ; length of anal base 

 I'^/i times snout and shorter than dorsal base; maxillaries extend be- 

 hind front margin of eye; distance from insertion of pectorals to 

 pelvics equal to distance from insertion of pelvics to a point one-fifth 

 the way along anal base (after Kner and Steindachner, 1866, and 

 Giiuther, 1909) Spratelloides alburnus (Kner and Steindachner) 



26. Origin of dorsal nearer to end of snout than to base of caudal fin by 

 a distance equal to one-half to two-thirds diameter of eye; gill rakers 

 10 to 13+1+32 to 33; anal rays usually 10, occasionally 9 to 11; 

 dorsal rays 10 or 11 ; scales 38 to 41 ; pectoral about 12 or 13 ; axillary 

 scale of pectoral equal to length of maxillaries; pelvics inserted under 

 middle of depressed length of dorsal or under middle third of base 

 of dorsal fin ; snout about equal to eye and about 3% in head ; head 3% to 

 4 in standard length, depth about 6 ; length of anal base about equal 

 to snout and shorter than dorsal base; maxillaries extend a trifle 

 behind front margin of eye ; distance from insertion of pectorals to 

 pelvics equal to distance from insertion of pelvics to a point two- 

 thirds along anal base; color blackish above (greenish to blue in life) 

 sides and belly silvery; inner edge of gill opening near rear of isthmus 

 with a deep notch, a similar notch in opercular apparatus that closes 

 just behind notch at side of isthmus ; upper edge of preorbital with a 

 blackish spot ; tip of chin blackish, snout with black pigment ; mouth 

 and gill cavities with black pigment; peritoneum with scattered black 

 pigment cells Spratelloides delicatulus (Bennett) 



Gemis SPRATELLOIDES Bleeker 



SprateUoides Bleeker. Nat. Tijdschr. Ned.-Indie, vol. 2, p. 214, IS.'jI. (Type, 

 Clupea argyrotaenia Bleeker.) 



SPRATELLOIDES ATROFASCIATUS. new species 

 FiGUKE 1 



Eolotype—K specimen (U.S.N.M. No. 115099) 31.7 mm. in 

 standard length, taken June 5, 1939, by Leonard P. Schultz in rock 

 pools at Fagasa Bay, Tutuila Island, along with one paratype (U.S. 

 N.M. No. 115100), 30.5 mm. in standard length. 



Description. — (Based on the holotype and paratype, the only 

 known specimens. Measurements are expressed in hundredths of the 

 standard length. Counts and measurements of the holotype are 

 given first followed by those for the paratype in parentheses.) 

 Length of head 24.0 (24.3) ; greatest depth of body 14.5 (14.7) ; 

 diameter of eye 7.3 (7.2) ; length of snout 7.3 (7.2) ; distance from 



