336 BULLETIN 189, UNITED STATES NATIONAL MUSEUM 



to cheek; lateral line ending under posterior rays of dorsal; scales 

 strongly ctenoid, absent only on a narrow space about the mouth, 

 about 3 rows on preorbital, 3 or 4 main rows on cheek and 3 or 4 

 on opercle, forming a sheath along bases of dorsal and anal, and 

 extending on bases of all the fins exclusive of ventral (covering caudal 

 almost entirely in adults), 3 complete rows between lateral line and 

 first dorsal spine; dorsal fin continuous, the spines following the 

 third one all of about equal length, the longest 2.0 to 2.5 in head; 

 soft part of dorsal high, forming an acute lobe, longest rays 1,4 to 

 1.6 in head; caudal deeply forked, especially in adults, upper lobe 

 notably the longer, exceeding length of head by more than diameter 

 of eye in large examples; anal similar to soft part of dorsal, its lobe 

 only a little less acute and scarcely lower than that of dorsal, the 

 second spine rather long and strong, 1.9 to 2.2 in head; ventral 

 inserted immediately behind base of pectoral, with a moderately 



Figure 71. — Chromis intercrusma Evermann and Radcliffe. From the type, ISO mm. long, 

 Guanape North Island, Peru (U.S.N.M. No. 77665). (After Evermann and Radcliffe, 

 1917.) 



large axillary scale, 1.1 to 1.3 (without filament) in head; pectoral 

 moderate, reaching little beyond tip of ventral but scarcely to origin 

 of anal, generally about as long as head, 3.2 to 3.5 in length. 



General color brown; grayish brown underneath; each scale with a 

 dark brown center, some on chest and abdomen with a metallic 

 luster; pectoral dark at base, otherwise pale olivaceous; other fins 

 dusky. 



This species is represented by 12 specimens, 175 to 280 mm. (128 

 to 209 mm. to base of caudal) long, in the collection made by the 

 Mission. In addition 3 paratypes (U.S.N.M. No. 77590), 80, 80, 

 and 85 mm. (58, 58, and 61 mm. to base of caudal) long, are at hand. 

 The proportions and enumerations used in the description are based 

 on the 15 specimens examined. The specimens secured by the 



