I 
152 BULLETIN OF THE UNITED STATES FISH COMMISSION. 
25 . Tylosurus timucu (Walbaum). Peixe Agulha; Timucu. 
One specimen, 20 inches long, from Teapa. Head 2.8; depth 11; eye 3 in postorbital part of 
head; A. 15; I). 16; about 135 scales before dorsal. 
26 . Hemiramphus brasiliensis (Linnaeus). Balao; Escribano. 
One specimen, 12 inches long, from Puerto Morelos. The following measurements are from end 
of upper jaw: Head 4.2; depth 5.75; eye 3.75; snout 3; interorbital 3.75; I). 14; A. 10; scales 54; pecto- 
ral 1.4 in head; ventrals 3. 
27 . Chirostoma humboldtianum (Cuvier & Valenciennes). Pescado Blanco de Clmlso. 
Five specimens, each about 5 inches long, from La Laguna, Jalisco, in the Sierra de Guanacatlan. 
Head 3; depth 4.75; eye 4.6; snout 3; maxillary 3; mandible 2.5; interobital 4; scales 53,-15; D. iv-13; 
A. 19; longest dorsal ray 2 in head; longest anal ray 2.2; pectoral 1.6; ventral 2.6; depth of caudal 
peduncle 3.3. Body slender, compressed; eye large, nearer tip of snout than posterior edge of opercle 
by a distance almost as great as diameter of orbit; interobital space flat, as is almost entire top of head; 
lower jaw projecting slightly, including the upper when closed; cleft of mouth horizontal, the edge of 
lower lip being on aline with center of pupil; lips thickened posteriorly, lower folding over upper at 
their union; maxillary nearly vertical, its distal end in advance of a vertical from anterior edge of orbit 
a distance equal to two-thirds diameter of pupil; minute teeth in small bands on jaws, none on vomer 
or palatines; gillrakers about 23, very slender, length of longest about equal to diameter of pupil; first 
two spines of dorsal about equal, the other two shorter; first few rays of soft dorsal highest, others 
gradually shortening; when the fin is elevated its edge is straight; caudal forked; anal similar to soft 
dorsal, except that its edge is slightly concave; ventrals reaching vent. 
Color in alcohol, brownish-olive, darker above; a distinct dark lateral band, in which are small 
darker spots extending from upper part of base of pectoral to middle of base of caudal, becoming 
darker posteriorly; scales on upper part of body and sides edged with dark, sometimes with small dark 
dots; fins all dusky; dorsal, caudal, and pectoral with some dark. 
28 . Chirostoma promelas Jordan & Snyder. 
One specimen, 8.5 inches long, from the Guadalajara market, caught in Laguna de Chapala, from 
which place the species was described. Head 3.3; depth 5; eye 6; snout 2.5; maxillary 3; mandible 2.25; 
interorbital 4.5; scales 53,-15; D. iv-11; longest dorsal ray 2.7 in head; A. 21; longest anal ray 2.5; 
pectoral 2; ventral 3.2: depth of caudal peduncle 3.8. 
29 . Chirostoma lucius Boulenger. 
Two specimens, 8 inches long, from the Guadalajara market, caught in Laguna de Chapala, which 
is the type locality. Head 3.3; depth 5; eye 5.75; snout 2.6; maxillary 3; mandible 2.2; interorbital 
4.2; scales 58,-15; D. v or vi-12; longest dorsal ray 2.4 in head; A. 20; longest anal ray 2.4; pectoral 
1.7; ventral 2.8; depth of caudal peduncle 3.3. 
30 . Chirostoma bartoni Jordan & Evermann. 
Forty-five specimens, ranging in length from 1.75 to 4.2 inches, all obtained by Dr. J. N. Rose in 
Lake Lerma, near the town of Lerma, State of Mexico. Until now, only the type of this species was 
known. A female, 3 inches long, gives the following measurements: Head 4; depth 5.5; eye 4; snout 
3.5; maxillary 3.2; mandible 2.3; interorbital space, 3.2; D. iv-i, 10; A. i, 13; scales 41,-11 , about 20 
before the dorsal. Body slender, moderately compressed, the back rounded; mouth small; snout 
short; lower jaw but slightly projecting. Otherwise as in the type. The anal fin formula varies from 
i, 13 to i, 15; and the scales from 40,-10 to 42,-12. 
31. Eslopsarum jordani (Woolman). 
Among the specimens brought home from Mexico by Dr. Rose in 1901 is a package of small dried 
fish, which he purchased in the market at Yautepec, State of Morelos. These specimens range in 
length from less than one inch to 2.25 inches. They are thoroughly desiccated and difficult of identi- 
fication, but seem to be the present species. Dr. Rose informs us that these little fish are sold in 
dishes containing a dozen or more and are eaten on toast or with meat. It is called “ Charal de la 
Laguna” and is much relished. 
32 . Caranx hippos (Linnaeus). Plorse Cravalla. 
One specimen, 13.5 inches long, from Monteeristo. Head 3; depth 2.66; eye 4.66; snout 4; 
maxillary 2; mandible 1.8; interorbital 3.66; preorbital 5.5; D. vi-i, 20; A. ii-i, 17; scutes on lateral 
line about 26. 
