THE SHORE FISHES OF PERU 297 



L. acclivis).- — Meek and Hildebrand, 1925, p. 685, Panama Baj- (references; 

 description; range). 



Head 3.1 to 3.3; depth 2.7 to 3.0; D. IX or X-I, 28 to 30; A. II, 

 6 or 7; P. 15 or 16; scales 45 to 50. 



Body moderately short, compressed, its greatest thickness about 

 two-fifths its depth; back elevated; dorsal profile anteriorly rather 

 gently and evenly convex; head short, deep, compressed; caudal 

 peduncle slender, 3.1 to 3.4 in head; snout short, blunt, 5.6 to 5.9; 

 eye 3.9 to 4.4; interorbital 4.7 to 5.4; mouth very strongly oblique, 

 but not quite vertical; lower jaw projecting, upper surface of its tip 

 about on level with middle of eye; maxillary extending about to 

 vertical from front of pupil, 2.0 to 2.1 in head; teeth very small, 

 mostly in a single close-set series in each jaw; gill rakers long, slender, 

 those at angle nearly as long as eye, 20 or 21 on lower and 10 or 11 on 

 upper limb of first arch; lateral line slightly arched anteriorly, 

 decurved under anterior part of second dorsal, attaining middle of 

 side under middle of fin; scales strongly ctenoid, rows above lateral 

 line anteriorly directed upward and backward, 5 rows between lateral 

 line and base of first dorsal spine, also 5 between it and base of first 

 ray of second dorsal, 18 or 19 vertical series between base of ventral 

 spine and origin of anal, forming a sheath one scale wide at base of 

 second dorsal, also extending more or less on all the fins exclusive of 

 spinous dorsal; dorsal fins close together, the spines slender, the third 

 longest, but not reaching beyond tips of the succeeding ones if deflexed, 

 1.8 to 2.1 in head; second dorsal long and rather low; caudal some- 

 what damaged, middle rays evidently longest; anal small, second 

 spine enlarged, 2.3 to 2.6 in head, origin of fin under middle of second 

 dorsal, its base 4.4 to 5.0 in head; ventral inserted under base of 

 pectoral, reaching beyond vent, 1.2 to 1.3 in head; pectoral very 

 long, reaching well beyond tip of ventral, a little longer than head, 

 2.8 to 3.1 in length. 



Color bluish gray with silvery reflections above; silvery below; 

 mandible especially bright silvery; very indefinite dark lines, if any, 

 along the rows of scales; inside lining of opercle black; spinous dorsal 

 dusky; other fins plain; axil of pectoral dark. Color of a fresh speci- 

 men from Panama, grayish above; silvery below; faint dark streaks 

 along rows of scales on back and sides; dorsal and caudal mostly 

 dusky, the lower rays of caudal yellow; ventral and anal orange. 



Five specimens, 205 to 220 mm. (160 to 178 mm. to base of caudal) 

 long, were taken by the Mission in an otter trawl in the Gulf of 

 Guayaquil, off Puerto Pizarro. The specimens were compared with 

 three cotypes from Panama Bay, with which they seem to be in almost 

 perfect agreement. 



Range. — Panama to northern Peru. Previously known only from 

 Panama Bay. 



