FAMILY IX. DOROSOMATID^;. ~ 93 



inferior oblique mouth; maxillary narrow and short, with a single 

 supplemental bone, not extending to opposite middle of the eye; 

 maxillary with a notch on outer margin; caudal peduncle slender. 

 Mud-eating fishes, having no value as food. 



KEY TO THE SPECIES OF DOROSOMA. 



a. Scales small, 69 to 73 in lateral series; anal .PAGE 



rays 36 to 38 "..... anale 93 



aa. Scales larger, 56 to 60 in lateral series; anal 



rays 30 to 34 exile 94 



86. Dorosoma anale sp. nov. 



Type, No. 4637, F. C. M., 7^ inches in length; El Hule, Oaxaca. 



Atlantic streams of Mexico south of the city of Vera Cruz. (Otopa; 

 El Hule; Perez; San Juan Evangelista.) 



Head 3^ to 4>(; depth 2^ to 3; D. 12; A. 36 to 38; scales 25-69 



FIG. 26. DOROSOMA ANALE Meek. 



to 73. Body much compressed, deep, profile with a slight angle at nape ; 

 dorsal region elevated; eye large with a well-developed adipose eyelid, 

 its diameter 3^ in head; snout very short, its length. about one-half 

 diameter of eye ; origin of dorsal slightly nearer tip of snout than base 

 of caudal; ventral scutes i8-f-io; least depth of caudal peduncle 2f. 



Color brownish on upper third of body, light silvery below; a 

 black spot on shoulder; fins all plain. Length about 12 inches. 



All of the specimens collected by. me have a long anal fin. The 

 specimen recorded from Montecristo by Evermann & Goldsborough 

 Dr. Evermann informs me has 32 rays in the anal fin. The smaller 

 scales of this species readily distinguishes it from the next one. 



