Jordan and Evermann, Fishes of North America. 3103 



1157 (f). CHIROSTOXA LER3LE, Jordan & Snycler. 



Head 3^ ; depth 5; depth of caudal peduncle 3J in head; eye 5i; snout 

 2; interorbital space 54; height of spinous dorsal 4i; soft dorsal 2 ; anal 

 2; length of pectoral 1; ventrals 3; caudal 12; D. IV-11; A. 20; scales 

 58-20, 11 between dorsals. Body slender, deepest part in region of ven- 

 trals; caudal peduncle narrow; snout long and pointed; lower jaw 

 slightly projecting, but not enough to include the upper; eye large, nearer 

 tip of snout than to posterior edge of opercle, a distance equal to diam- 

 eter of orbit, or to width of preorbital space; cleft of mouth extending to 

 a horizontal through lower edge of orbit; lower lip folded over the upper 

 at their union ; maxillary extending posteriorly almost to a perpendicular 

 from anterior edge of orbit, its distal end angular; teeth large and strong, 

 curved backward and inward, arranged in 2 definite rows, those of the 

 inner row of the upper jaw and of the outer row of the lower jaw larger, 

 none on vomer or palatines ; vertebrae 44. An indefinite lateral line extend- 

 ing along body about 10 scales below first dorsal, the pores absent on 

 many of the scales; scales crenate, largest along the lateral color-band, 

 much smaller between occiput and first dorsal, those immediately pos- 

 terior to occiput, minute and very closely crowded; a narrow edging of 

 similar scales along the gill-openings, extending ventrally to the isthmus ; 

 scales between dorsals not much reduced in size or crowded together; 

 basal half of inter-radial membranes of caudal with scales; first 2 spines 

 of dorsal longest, third shorter, fourth about as long as the first; first 

 dorsal ray longest, others gradually shorter, edge of fin straight; inser- 

 tion of anal on a perpendicular passing through a point half way between 

 origins of dorsals, first ray longest, others successively shorter, last ray 

 one-third the length of first ; caudal deeply forked, its tips rather pointed ; 

 pectoral pointed, extending beyond origin of ventrals a distance equal to 

 diameter of pupil ; ventrals reaching vent. Color in alcohol, light olive, a 

 silvery lateral band equal to a scale in width extending from upper part 

 of base of pectoral to base of caudal ; edges of upper scales dusky ; a little 

 dark color on dorsals, caudal, and pectoral; upper and lower jaws and 

 top of head with minute dark dots; upper part of eye dark. 



C. lermcv closely resembles C. crystallinum. It differs markedly in having 

 large teeth, which are arranged in two rows, a shorter lower jaw and a 

 larger eye. Jalisco, Mexico. (Jordan & Snyder.) 



Our specimens of C. lermcv are all from the market of Guadalajara. The 

 gill-arches and viscera had been removed and the bodies were somewhat 

 shrunken. The specimens are said to have come from Laguna de Chapala, 

 Jalisco, Mexico. (Type, No. 6159, L. S. Jr. Univ. Mus. Coll. J. O. Snyder. ) 



Chirostoma lermce, JORDAN <fc SNYDER, Bull. U. S. Fish Com. 1899 (1900), 140, Guadalajara, 

 Mexico. 



1157 (g). CHIROSTOMA OCOTLANE, Jordan & Snyder. 



Head 3; depth 4$; depth of caudal peduncle 3m head; eye 4$; snout 



23 ; interorbital space 5; height of spinous dorsal 3fc; soft dorsal 2; anal 



2; length of pectoral 1|; ventral 2$; caudal H; D.V-12; A. 20; scales 



54-19, 11 between dorsais. Body long, rather slender, deepest above 



Bull. ISTo. 47, pt. 4 ix 



