THE SHORE FISHES OF PERU 349 



on opercle; a small dark spot, often obliquely elongate, situated on 

 the second oblique series of scales behind tip of opercular flap, and 

 on the first and second longitudinal rows of scales below lateral line, 

 another black spot at base of caudal wholly or mostly above lateral 

 line; dorsal dusky, commonly with a very small dark spot at base of 

 second or between bases of second and third soft rays of dorsal; 

 caudal and pectoral slightly dusky; other fins plain translucent. 



Many specimens were collected by the Mission. There are at hand 

 also several specimens taken by R. E. Coker. The specimens in the 

 collections are from Lobos de Tierra Bay, Lobos de Afuera Bay, 

 Chimbote Bay, Samanco Bay, Tortuga Bay, San Lorenzo Island, and 

 Santa Rosa Island. The proportions and enumerations used in the 

 description are based on 16 specimens, 33 to 200 mm. (28 to 165 mm. 

 to base of caudal) long. Specimens from Panama Bay, the type 

 locality, seem to agree well with the Peruvian material. Two speci- 

 mens, 110 and 165 mm. long, from Charles Island and Albemarle 

 Island, Galdpagos, collected by W. L. Schmitt, also were compared 

 and seem to be of this species, although it apparently has not pre- 

 viously been reported from the GaUpagos Islands. 



The proportionately great difference in the size of the eye of the 

 small and the largest specimens examined is remarkable. The 

 measurements indicate that the eye increases little in size, whereas 

 other parts, especially the snout, continue to grow, after a length of 

 about 140 mm. is attained. For example, in a specimen 145 mm. long 

 the eye had a diameter of 5.1 mm., and in one 200 mm. long its diam- 

 eter was 6.0 mm. In the smaller of these specimens the snout was 

 10 mm. long, whereas it was 14 mm. in the larger one. 



Range. — Gulf of California to Peru and the Galapagos Islands. 



Genus PSEUDOJULIS Bleeker, 1861 



This genus differs from Halichores principally in the absence of a 

 canine tooth in the upper jaw, near the angle of the mouth. The 

 lower jaw may have two or four enlarged canines anteriorly (the species 

 herein described from Peru has four). 



A single species new to the fauna of Peru is included. 



PSEUDOJULIS NOTOSPILUS GUnther 



Pseudojulis notospilus Gunther, 1864a, p. 26, Panama Bay (original description); 

 1869, p. 447, pi. 66, fig. 2 (description). — Meek and Hildebrand, 1928, p. 

 725, Panama Bay (synonymy; description; range). 



Head 3.6, 3.5; depth 3.6, 3.7; D. IX, 11, IX, 11; A. Ill, 12; III, 12; 

 P. 13, 13; scales 27, 27. 



Body moderately compressed, its greatest thickness about half 

 its depth; back elevated; dorsal outline more strongly convex than the 

 ventral; caudal peduncle much compressed, 1.9, 1.9 in head; snout 

 pointed, 3.3, 3.6; eye 3.3, 3.75; interorbital 5.0, 5.3; mouth small, 



