of the Genera Pomolobus, Brevoortia, d&c. 311 



11. DOROSOMA, Rafin. 1820. 



Ichth. Ohiensis, p. 39. 



Chatoessus (part.), Cuv. Re^me Anirn. ed. 2, ii. p. 320 (1829); Giinth. 



Cat. Fish. vii. p. 40(5 (1S68). 

 Chatoessus, Cuv. & Val. Hist. Nat. Poiss. xxi. p. 94 (1848). 



Mouth subterminal or inferior ; maxillary narrowed dis- 

 tally ; anterior supramaxillary absent. Gill-rakers slender, 

 very numerous. Dorsal 12-15; last ray produced into n 

 filament. Anal 26-38. Pelvics 8-rayed, in advance of 

 dorsal. 55 to 80 scales in a longitudinal series. Vertebrae 50. 



Atlantic coast and rivers of North and Central America. 



1. Dorosoma ccpedianum. 



Meqalops cepediajia, Le Sueur, .Tourn. Acad. Philadehihia, i. 1818, 



p. 361 . 

 Clupea heterura, Ratinesque, Anier. Monthly Majr. 1818, p. 3.54. 

 Dorosoma notafn, Ilatinesque, lelith. Oliieiisis, p. 39 (1820). "" 

 Chatoessus ellipdcus, Kirthind, Rep. Zool. Ohio, p. 109 (1839). 

 Dorosoma insociabilis, Abbott, Pioc. Acad. Philadelphia, 1860, p. 365. 

 Chatoessus cepedianas, Giinth. Cat. Fish. vii. p. 409 (1868). 

 Dorosoma ceppdianitm, Jord. & Everm. Bull. U.S. Nat. Mus. xlvii. 



1896, p. 41(;, and 1900, fig-. 183. 

 Dorosoma cepediannm exile, Jord. & Everin. /. c. 

 Dorosoma exile, Meek, Zool. Publ. Columbian Mus. v. 1904, p. 94. 



Mouth small, subterminal or inferior; maxillary extending- 

 to below anterior edge of eye. Depth of body 2 to 3 in the 

 length, length of head 3f to 4^. Diameter of eye 4 to 5 ia 

 length of head. 55 to 65 scales in a longitudinal series, 21 to 

 29 in a transverse series ; ventral scutes 17-19 + 10-13. 

 Dorsal 13-15. Anal 30-34. Pelvics inserted in advance of 

 origin of dorsal. A dark humeral spot, most prominent in 

 tiie young. 



Cape (yod to Mexico, entering rivers. 



Here described from five specimens, 180 to 260 mm. long, 

 from Virginia, Illinois, and Texas. In these the body is 

 deeper (depth 2 to 2\ in the length) in the examples from 

 Virginia than in those from Illinois and Texas (depth 2f to 

 3 in the length) ; but in young specimens this difference is 

 not apparent, the depth being about ^ of the length in both 

 forms. 



2. Dorosoma anale. 

 Dorosoma anale, Meek, Zool. Publ. Columbian Mus. v. 1904, p. 93, fig. 

 Depth of body 2n to 3 in the lengtli. About 70 scales in 



