142 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
36 . Chirostoma lermee Jordan & Snyder, new species. 
Type No. 6159, L. S. Jr. Univ. Mus. Collected in market of Guadalajara; said to have come 
from Laguna de Chapala, Jalisco, Mexico. Collected hv J. O. Snyder, December 23, 1898. 
Head 3.16 in length; depth 5.33; depth of caudal peduncle 3.66 in head; eye 5.5; snout 2,66; 
interorbital space 5.5; height of spinous dorsal 4. 5; soft dorsal 2.5; anal 2.16; length of pectorals 1.66; 
ventrals 3; caudal 1.6. D-iv, 11. A. 20. Scales in lateral series 58; transverse series 20; between 
dorsals 11. Body slender; deepest part iu region of ventrals; 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 diameter of orbit or to width of 
preorbital space. Cleft of month 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 two 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 extending along 
body about 10 scales below first dorsal ; the pores Fig 19 ._ Lateral and dorsal views of head ~ ot chirostoma 
absent on many of the scales. Scales crenate ; lar- Urmce. 
gest along the lateral color-band; much smaller 
between occiput and first dorsal; those immediately posterior to occiput minute and very closely 
crowded; a narrow edging of similar scales along gill-openings, extending veutrally to the isthmus; 
scales between dorsals not much reduced in size nor crowded together ; basal half of interradial mem- 
branes of caudal with scales. First 2 spines of dorsal longest; third, shorter; fourth, about two- 
thirds as long as first; first dorsal ray longest, others gradually shorter; edge of fin straight; insertion 
of anal on a perpendicular passing through a point halfway between origins of dorsals; first ray long- 
Fra. 20. — Cichlasoma steindachneri Jordan & Snyder, new species. Type. 
est, others successively shorter, last ray oue-tliird 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, 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. lemur, 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. 
Our specimens of C. lemur are all from the market of Guadalajara. The gill-arches and viscera 
had been removed, and the bodies are somewhat shrunken. 
