188 Field Columbian Museum — Zoology, Vol. V. 



Body elongate, not much compressed; mouth widely cleft; maxil- 

 lary extending beyond anterior edge of orbit; small teeth in many 

 series in each jaw, the outer series on intermaxillary most developed; 

 teeth on vomer and palatines; stomach siphonal; walls very thin in 

 pyloric region; one large and one small pyloric ccecum; pseudo- 

 branchise present. 



177. Neomugil digueti Vaillant. 



Neomugil digueti Vaillant, Bull. Soc. Philom., iv, 1894, 73; torrent 

 in the Sierra de las Cacachilas de Santa Cruz, Lower California: 

 Jordan & Evermann, Bull. 47, U. S. Nat. Mus., 1900, 3165. 



An inhabitant of mountain streams of Lower California south of La 

 Paz. 



Head 3; depth 4; D. iv-i, 8; A. 1, 9; scales 3-43-1 1. Body elon- 

 gate, not much compressed; interorbital 2^ in head; eye 6 in head; 

 entire head covered with ctenoid scales; mouth deeply cleft; upper 

 jaw the longer; no adipose eyelid; origin of first dorsal at middle of the 

 body; origin of anal in advance of soft dorsal. Length about 8 inches. 

 (Vaillant.) 



73. Joturus Poey. 

 The Bobos. 



Joturus Poey, Memorias, 11, 263, 1861. (Type, Joturus pichardi 

 Poey.) 



Body elongate, not much compressed; head large, snout blunt and 

 projecting beyond the small, inferior mouth; mouth broad, with little 

 lateral cleft; lower lip very thick, its edges forming a soft sharp-edged 

 fold, its outline very obtuse; teeth coarse, blunt incisors, with serrated 

 edges, arranged in broad patches on jaws and vomer. 



178. Joturus pichardi Poey. Bobo. 



Joturus pichardi Poey, Mem. 11, 263, 1861, Cuba. 



Agonostoma globiceps Gunther, Ann. & Mag. Nat. Hist., 1874, 370; 

 Misantla, Vera Cruz: Jordan & Evermann, Bull. 47, U. S. Nat. 

 Mus., 1896, 821. 



Fresh-water streams of Cuba, and southern Mexico to Panama, in 

 swift currents and mountain torrents. 



Head 4-f ; depth 3;,;; D. iv-19; A. in, 9; scales 13 or 14, 42 to 45. 

 Body elongate, rather robust, a little compressed behind; head large, 

 gibbous above and anteriorly; snout thick, broad, and blunt, consid- 

 erably overhanging the small inferior mouth, and entirely below the 

 level of the eye; maxillary reaching posterior margin of the eye, 2% 

 in head; mouth broad, but without much lateral cleft; lower jaw in- 



