[37] CATALOGUE OF THE FISHES OF NORTH AMERICA. 



452. Opisthonema libertate' Giiuther. P. 



116.— BREVOORTIA Gill. (125) 



453. BreVoortia tyrannus Latrobe. N. S. (450) 

 453b. Brevoorlia lyraunits paironus Goode. S. (449) 



117.— OPISTHOPTERXJS- Gill. 



454. Opisthopterus lutipinnis* Jordan »t Gilbert. P. 



Family XL.— DOROSOMID^. (38) 



118.— DOROSOMA Rafinosque. (12(5) 



455. Dorosoma cepedianum Le Sueur. V. S. N. (451) 



456. Dorosoma mexicanum Giiuther. S. (451 h) 



Family XLI.— ENGRAULID^. (39) 



119.-STOLEPHORUS Lac<5p^de. (127) 



457. Stolephorus ringens Jtiiyus. C. 1'. (452) 



458. Stolephorus macrolepidotus* Kner & Steindacluier. P. 



459. Stolephorus opercularis" Jordau & Gilbert. P. 



460. Stolephorus browni Gnielin. N. S. W. (453) 



461. Stolephorus perthecatus'' Goode & Bean. S. 



^ Mtletta Ubertat'm Giiuther, Proc. Zool. Soc., Lond., 186G, 303; Clupea libertatis GUa- 

 ther, VII, 433; Opisthonema liberiaie Jordan & Gilbert, Proc. U. S. Nat. Mu.s., 1882, 

 622; Mazatlau to Panama, abundant. 



-Opisthopterus Gill. 



(Proc. Ac. Nat. Sci. Phil., 1861; 31; type rristifjasfer tartoorCnv. &. Val.) 



Body elongate, very much compressed, w ith the abdomen promiuent and strongly 

 serrated. Scales thin, deciduous, of moderate size. Lower jaw projectinj; ; teeth 

 rather small, in villiform bauds on both jaws, palatines, pterygoids and tongue; 

 vomer toothless. Dorsal tin small, considerably behind middle of body. Anal fin 

 very long. Ventrals wanting. Caudal deeply forked. Tropical parts of the Pacific. 

 {OnhdQ?/, behind: Ttre'fjov, fin, the dorsal being placed farther backward than in the 

 closely related genus FrisUgaster.) 



^ PristigasUr hiiijnunis Jordan & Gilbert, Proc. U. S. Nat. Mus., 1881, 340. Gulf of 

 California and southward. 



* StoJej)hont8 viacrolepidotus Kner & Steindachner. Body comparatively short and 

 deep. Head one-fourth longer than deep. Snout very short, not projecting far beyond 

 lower jaw. Jaws toothless. Maxillary narrow, rounded behind, extending to angle of 

 preopercle. Abdomen slightly compressed. Scales adherent. Origin of dorsal .slightly 

 behind middle of body. Silvery, sides with an indistinct bluish band. Head 3| ; depth 

 3, D. 12, A. 28. Scales 35-9. Mazatlau to Panama, one of the largest of the Ameri- 

 can species of Stolephorus. 



{Engraidis macrolepidotus Kner & Steindachner, Abhandl. Bayer, Akad. Wiss. X, 

 18t)4; Engraidis macrolepidotus Giinther, VII, 385.) 



^Stolephorus optrcularis Jordan &' Gilbert. Proc. U. S. Nat. Mus., 1881, 275. (Gulf 

 of California.) 



^Stolephorus perthecatus Goode & Beau., Proc. U. S. Nat. Mus., 1882, 434. 



Pensacola, Fla. Apparently distinguished from S. hrowni by the short anal and from 

 S, pcrfasciatus by the long maxillary. 



