Storer’s Synopsis of the Fishes of North America. 29 
pyramidal, silvered, variegated, and reticulated with blackish ; lateral line straight, but faint. 
All the lower fins elongated ; the pectorals reaching the abdominal, the anal reaching the tail, 
dorsal fin with twelve rays ; tail forked. Scales very minute. 
D.12. P.12. V.(?). A.10. C.20. Length, 2 to 3 inches. 
Ohio River, Rar. 
Exoglossum macropterum, Stone Toter, Rar., Journ. Acad. Nat.Sc., 1. p. 421, pl. 17, fig. 3. 
L’Exoglosse macroptére (Exoglossum macropterum, Raw.), Cuv. et VaL., xvi. p. 436. 
3. Exoglossum annulatum, Rar. 
Head narrow, forehead smooth and convex, lower lip trilobated ; body oblong, olivaceous, 
back blackish, a black ring at the base of the tail; lateral line curved downwards at the 
base. Fins olivaceous ; pectoral fins elliptic, obtuse, not reaching the abdominal ; dorsal 
fins in the middle of the back with nine rays; caudal fin forked. Scales larger than in the 
preceding. ; 
D.9. P.15. V.(?). A.9. C.24. Length, 3 to 6 inches. 
New York, Rar. 
Exoglossum annulatum, Black Chub, Rar., Journ. Acad. Nat.Sc., 1. p. 421, pl. 17, fig. 4. 
L’Exoglosse & anneau (Exoglossum annulatum, Rar.), Cuv. et Vau., xvur. p. 487. 
4. Exoglossum nigrescens, Rar. 
Head short, forehead smooth and convex, lower lip trilobated ; body oblong ; lateral line 
nearly straight; pectoral fins short, oval; dorsal fin in the middle of the back; tail slightly 
forked. Black, which color extends to the fins ; no caudal ring. 
D. (?). P.(?). V.(?). A. (2). C. (2). Length, 2 to 8 inches. 
Lake Champlain, Rar. 
Exoglossum nigrescens, Black Chub, Rar., Journ. Acad. Nat. Sc., 1. p. 422. 
L’Exoglosse noiratre (Exoglossum nigrescens, Rar,), Cuv. et Vau., xvir. p. 488. 
5. Exoglossum spinicephalum, Vat. 
Head short, less than one sixth the length of the body. Dorsal very small; anal larger; 
pectorals pointed. Scales smooth. Back greenish; the remainder of the body silvery. 
Dov, Bi @). Vi. (2). ASQam@: |) ee Lenpth 2 inches: 
Wabash River, Lesueur. 
Leuciscus spinicephalus, LEsvEur, Cuy. et Vat., xvi. p. 489. 
L’Exoglosse spinicephale (Exoglossum spinicephalum, Vat.), Cuv. et VAL., XVII. p. 489. 
6. Exoglossum dubium, Kirrianp. 
Head and back olive ; operculum iridescent ; sides dusky, abdomen white. Fins fulvous. 
Head elongated. The upper jaw projects beyond the lower, which is small, semicircular, 
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