CLUPEID^E. CVTI. 265 



* Upper jaw not projecting beyond the lower. (CLUPEIN/E.) 

 f Teeth wanting or on tongue only (rarely a few weak teeth in 

 jaws) no dorsal filament; scales regularly arranged, not 

 ciliated; upper jaw einargiuate. 



\ Depth 3i in length; cheeks higher than long; preopercle 

 with a very short horizontal process. . ALOSA, 1. 

 \\ Depth 3| to 3| in length ; cheeks longer than high ; pre 

 opercle with an oblong horizontal process. 



POMOLOBUS, 2. 



** Upper jaw projecting beyond the lower. (DOROSOMIN^E.) 

 a. Body compressed, deep ; last ray of dorsal filamentous ; 

 rnouth toothless. . . . . . DOROSOMA, 3. 



/. ALOSA, Cuvier. SHADS. 



1. A. sapidissima, (Wilson) Storer. COMMON SHAD. 

 Head 4^ in length; eye 5 in head; bluish, sides silvery; 

 scales large; D. 18; A. 21; V. 9; lat, 1. 68. Newfound 

 land to Florida, entering rivers; also lately introduced 

 into Western streams; a valuable food fish. (A.^rcesta- 

 lilis, DeK.) 



2. POMOLOBUS, Rafinesque. GASPEREAUS. 



1. P. pseudoharengus, (Wils.) Gill. ALEWIPE. GAS- 

 PEEEAU. SPRING HERRING. Head 5 in length; eye 4 

 in head; bluish, sides iridescent; D. 18; A. 18; V. 9. 

 Newfoundland to Florida, entering rivers, sometimes 

 land-locked in ponds; a common food fish. (A. tyrannus, 

 DeK. A. cyanonoton, Stor., etc., etc.) 



Var. /acustris, Jordan. CAYUGA LAKE SHAD. Head 

 4 in length; body much heavier forward than in the 

 others; depth of head 4^ in length of body; eye large, 

 longer than snout, 3 in head; scales large, loose; caudal 

 peduncle in its narrowest place not half wider than eye; 

 steel blue, punctate; sides silvery; D. 15; A. 19; lat. 1. 



12 



