178 MALACOPTERYGII. 
2. Dorosoma anale. 
Dorosoma anale, Meek, Publ. Columbian Mus., Zool. v. 1904, p. 93, fig. 26’. 
Hab. Mexico, Otopa and Rio Papaloapam in Vera Cruz}. 
Total length 300 mm. 
8. Dorosoma exile. 
Dorosoma cepedianum exile: (Jord. & Gilb., 1882), Jord. & Everm. Bull. U.S. Nat. Mus. xlvii. 1896, 
p. 416". 
Dorosoma exile, Meek, Publ. Columbian Mus., Zool. v. 1904, p. 94°. 
Hab. Coasts and rivers of Texas ! and Tamaulipas ?. 
Total length 300 mm. 
4, Dorosoma petenense. 
Chatoessus petenensis, Giinth. Cat. Fish. vii. p. 408 (1868) °. 
Dorosoma petenense, Jord. & Everm. Bull. U.S. Nat. Mus. xlvii. 1896, p. 417°. 
Depth of body 22 to 3 in the length, length of head 34. Jaws equal anteriorly; maxillary extending to 
below anterior 4 or 3 of eye. 40 to 43 scales in a longitudinal series. Dorsal 14-15; origin above or 
slightly in advance of the ventrals. Anal 21-24. Pectoral nearly reaching the ventral. Silvery, 
a dark humeral spot. 
Hab. Guatemata, Lake Peten ! (Salvin). 
Here described from the types, four specimens, 70 to 90 mm. in total length. 
2. SIGNALOSA, Everm. & Kendall, 1898. 
Signalosa, Jord. & Everm. Bull. U.S. Nat. Mus. xlvii. 1900, p. 2809. 
A single species. 
1. Signalosa mexicana. 
Chatoessus mexicanus, Giinth. Cat. Fish. vil. p. 409 (1868) *. : 
Dorosoma mexicanum, Jord. & Everm. Bull. U.S. Nat. Mus. xlvii. 1896, p. 416 *. ge a 
Signalosa atchafalaye, Everm. & Kendall, Bull. U.S. Fish. Comm. 1897, p. 127 (1898) °; Jord. & 
Everm. t. c. 1900, p. 2809, fig. 184°. 
Signalosa mexicana, Meek, Publ. Columbian Mus., Zool. v. 1904, p. 94°. 
Depth of body 22 to 3 in the length, length of head 3 to 34. Jaws equal anteriorly; maxillary extending to 
below anterior 7 or 3 of eye. 40 to 42 scales in a longitudinal series. Dorsal 13-14; origin immediately 
behind the base of the ventrals. Anal 24-25. Pectoral extending to or a little beyond the base of 
ventral. Silvery, a dark humeral spot. . 
Hab. Atlantic Coast streams of the Southern United States and Mexico: 
Unitep Srares, Mississippi+ and Louisiana? 4; Mexico! (Sallé), Valles in 
San Luis Potosi®; Rio Papaloapam in Vera Cruz® (Meek). 
Here described from three specimens, 90 to 100 mm. in total length, including the 
types of the species. S. atchafalaye is described and figured as having the origin of 
the dorsal above the ventrals, but it seems to be the same as S. mexicana. 
