328 BULLETIN 189, UNITED STATES NATIONAL MUSEUM 



smooth membranous edges, exposed part roughly sculptured, re- 

 duced scales extending forward on interorbital, small scales present 

 on cheek and opercle, greatly reduced scales on median section of 

 chest anterior to ventral fins, a sheath on base of dorsal, and a very 

 narrow one on base of anal, extending far on caudal fin, and somewhat 

 on base of pectoral, 6 longitudinal rows of scales between lateral line 

 and first dorsal spine and 2 between it and last ray of dorsal; dorsal 

 fin continuous, the posterior spines quite short, the sixth or seventh 

 usually longest, 2.6 to 3.6 in head; soft part of fin highest anteriorly, 

 the longest rays of about the same length as the longest spines; 

 caudal forked, the upper lobe the longer, shorter than head by half 

 length of snout; anal small, the first two spines largely disconnected, 

 the third closely adherent to first soft ray, its point concealed, the 

 second one 4.4 to 5.5 in head, the soft part with a produced lobe ante- 

 riorly, fully as long as head posterior to middle of eye ; ventral inserted 

 a little more than half as far from base of pectoral as from origin of 

 anal, somewhat thickened by membrane, 1.5 to 1.8 in head; 6 lower 

 rays of pectoral simple, slightly thickened and separate distally, the 

 two upper simple rays generally the longest, 1.2 to 1.4 in head, 3.75 

 to 4.5 in length. 



Color brownish gray above, pale underneath; with six or seven 

 light cross bars, the two anterior ones often obscure, the first some- 

 times only a blotch under anterior part of spinous part of dorsal, the 

 second under middle of spinous part of dorsal, often not extending 

 below middle of side, the third bar extending from bases of last spiaes 

 and anterior soft rays of dorsal, obliquely downward and backward to 

 origin of anal, two more light bars under soft dorsal, one on caudal 

 peduncle and sometimes a very narrow one at base of caudal; mem- 

 branous margin of opercle above distal angle pale; dorsal fins dusky, 

 the light bars of side sometimes extending somewhat on base of fin; 

 caudal, anal, ventral, and pectoral all dusky at base, distally pale. 

 Conspicuous color features in life, as described by Evermann and 

 Kadcliffe (see reference above), are: Bright reddish-orange tips and 

 margms of caudal, anal, ventral, and pectoral fins; about four some- 

 what irregular white bars; belly and throat white or nearly so, show- 

 ing a slight greenish tint in some specimens; ground color of side and 

 back very dark brown; each scale with a broad margin of dark brown, 

 centrally light greenish or brownish gray with metallic luster; under 

 surface of opercle very dark except for a broad marginal zone of 

 dusky white; soft dorsal faintly tipped with orange-red. 



The collection furnished by the Mission contains 24 specimens, 

 165 to 345 mm. (131 to 280 mm. to base of caudal) long. The speci- 

 mens were taken at the localities named: Lobos de Tierra Bay, 

 Guanape Island, Chimbote Bay, Samanco Bay, Pachacamac Island, 

 Chilca Bay, La Lagunilla, Viejas Island, San Juan Bay, and Atico 

 Point. Seven specimens, collected by K. E. Coker at Paita, Ancon, 



