| 
95 FISHES OF SINALOA. 407 
154. Larimus argenteus (Gill). 
One large specimen obtained; also found in the Gulf 
of California and southward on sandy shores to Panama. 
155. Larimus breviceps Cuvier & Valenciennes. 
Specimens of this species were obtained by Dr. Gilbert 
at Mazatlan, Punta Arenas and Panama. None were 
seen by us. | 
156. Corvula macrops (Steindachner). VAcuocua. 
One fine specimen from the Astillero at Mazatlan. 
Elead.2% > depth: 2-vdorsal’ X1, 1,253 anal dg: eve 
3% in head; snout 434; maxillary 2%; longest dorsal 
spine 134 ; longest dorsal ray 24% ; second anal spine 24% ; 
ventrals 14%; pectoral 12; caudal fin 1%. 
Body oblong, moderately compressed, not much ele- 
vated; dorsal outline uniform from tip of snout to caudal 
peduncle; ventral outline rounded from chin to breast, 
then straight to anal spine, then slanting obliquely upward 
to caudal peduncle. 
Snout blunt, shorter than large eye: upper jaw slightly 
projecting, teeth small and sharp, in one or two irregular 
series in lower jaw, in several series in upper jaw, the 
outer row slightly enlarged: maxillary extending to pos- 
terior edge of pupil; chin with four large pores; edge ot 
preopercle covered with skin, which is serrated on the 
edge. 
Gill-rakers slender, 9-13: scales ctenoid on the body, 
cycloid on the head; scales 8-56-11. 
Spinous dorsal a little higher than soft dorsal; first dorsal 
spine very short, second about 5 times longer, third twice 
as long as second, third, fourth, fifth and sixth subequal, 
the others rapidly shorter; first anal spine very small, the 
second many times longer and stouter, but shorter than 
soft rays; ventrals inserted behind pectorals and reach- 
ing beyond them; caudal truncate. 
