432 CALIFORNIA ACADEMY OF SCIENCES. 60 
Top of head, snout, lower jaw, orbitals, maxillary, lower 
two-thirds of opercle and preopercle naked; cheeks 
scaled; eye large, with membranous eyelid to posterior 
edge of pupil in specimens six or eight inches long, not 
conspicuous in young examples. Snout equal to eye, twice 
width of preorbital; lower jaw entering profile; maxil- 
lary reaching to posterior edge of orbit. Teeth strong, 
in a single row: lower teeth close together, with two 
canines in front; upper teeth larger, the distance between 
them irregular, not much enlarged anteriorly; vomer, 
palatines and tongue with exceedingly small villiform 
teeth. Gill-rakers hardly half eye, 4+13. Breast 
scaled; curved part of lateral line, 1% in straight part; 
scutes large, about 30; scales, 80. 
Color, silvery, bluish above with golden reflections 
below; a dark band along plates of lateral line; fins 
largely yellow, dorsal, anal and caudal, broadly edged 
with black; a distinct small black spot at upper end of 
gill-opening; a dark blotch on opercle, and one behind 
pectoral. 
Body more elongate than in Caranx /atus, the fin rays 
fewer, the eye larger and the coloration more yellow, 
with more black on the fins. 
86. Caranx latus Agassiz. 
Occasionally taken in the bay at Mazatlan, and gener- 
ally distributed throughout the waters of the tropical 
Pacific and West Indies. We are unable to distinguish 
the specimens from the west coast of Mexico from the 
common West Indian form. 
87. Caranx hippos (Linneus). ‘Toro. 
Very common in the sea about Mazatlan, occasionally 
entering the estuary. A food fish of some importance, 
reaching the length of two or three feet. We are unable 
