620 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Back gray brown, also upper surface of head. Sides and under 

 surface silvery white, also iris. Dorsal and caudal pale brown. 

 Lower fins whitish. 



Red Sea, Pinang, East Indies, Philippines, Japan. 



U.S.N.M. No. 49289. Red Sea. Bellottl. Length, 126 mm., caudal ends broken. 



Lower gill rakers 32 ? 

 U.S.N.M. No. 56045. Bulan, Philippines. Bureau of Fisheries (3243). Length, 



192 mm., caudal ends broken. Lower gill rakers 32. 

 U.S.N.M. No. 71842. Kagoshima, Japan. Albatross collection. Length, 290 mm. 



As Clupea okinawensis. 

 U.S.N.M. No. 71897. Kagoshima, Japan. Albatross collection. Length, 280 mm. 



As Clupea okinawensis. 



SARDINELLA POSTERUS (Whitley) 



Amhlygaster posterus Whitley, Records Austral. Mus., vol. 18, p. 144, 1931 

 (type locality: Fremantle District, Western Australia). 



Depth 4% ; head 3%. Eye partly concealed by adipose lids which 

 unite with skin to form gelatinous appearance to most of sides of 

 head; maxillary extending to below pupil; border of upper jaw 

 slightly incised; jaws apparently toothless; teeth on palate and 

 tongue ; vertex of head with dense patches of striae behind eyes. Gill 

 rakers fine, elongate, very numerous. 



Scales 40 in lateral series ; 11 transversely ; 17 predorsal. Scapular 

 region scaleless, and like parts of opercles venulous. Body scales 

 striated, with subvertical lines not meeting in middle of each scale. 

 Abdominal scutes 20 + 15. Belly not strongly compressed but with 

 median ventral scutes keeled. 



D. 17, origin nearer snout tip than caudal peduncle; A. 14, ii or 

 last 2 rays enlarged, fin base longer than that of dorsal. Bases of 

 anal and caudal fins very scaly. Pectorals subfalciform, nearly equal 

 head without snout ; ventrals begin below median dorsal rays. 



General color after long preservation, dark grayish above, silvery 

 on sides. 



Length, 176 mm. without caudal. (Wliitley.) 



Western Australia. Although described without reference to 

 relationship it appears to be allied with Sardinella clupeoides. 



Genus ARENGUS Cornide 



Arengus Cornide, Ensayo de una historia de los peces, de las costa de Galicia, p. 



91, 1788. (Type, Arengus minor Cornide, monotypic.) 

 Sardima Antipa, Denkschr. Akad. Wiss. Wien, math-nat. Kl., vol. 78, p. (39) 



41 (54, 1906. (Type, Clupea pilchardus Walbaum, designated by Jordan, 



Genera of Fishes, pt. 4, p. 512, 1920.) 

 Sardinops Hubbs, Proc. California Acad Sci., vol. 18, p. 264, 1929. (Type, 



Meletta caerulea Girard, orthotypic.) 



Body elongate, moderately compressed, abdomen not sharp edged. 

 Eye with well-developed adipose lids. Mouth moderate, upper jaw 



