THE SHORE FISHES OF PERU 195 



black distally, the rest of fin generally pale, the degree of pigmenta- 

 tion quite variable among individuals; caudal dusky to nearly black; 

 ventral and pectoral pale, with or without dusky punctulations. 



A. dovii is represented in the present collection by 46 specimens, 

 25 to 110 mm. (18 to 74 mm. to base of caudal) long. One is from 

 Samanco Bay, and all the others were taken in Lobos de Afuera Bay. 

 These specimens were compared with examples from Costa Kica, 

 Panama Bay, and Cupica Bay, Colombia. The species apparently 

 is new to the faima of Peru. 



This species is closely related to A. retrosella (Gill) , known from the 

 Gulf of California, where A. dovii also is said to occur. It differs from 

 the latter in having a black half-bar under the base of the second dorsal, 

 which is wanting in A. dovii. It differs, furthermore, in having finer 

 and more numerous color markings on the lower parts of the head, 

 and the eye is a little smaller (2.7 to 2.9 in head in A. retrosella). 

 The constancy of the number of dorsal and anal rays in the two 

 species discussed here, as well as in A. parri, is remarkable. In 21 

 specimens of A. dovii, 17 of ^. porri, and 7 of A. retrosella, the number 

 in the dorsal is constantly VI-I, 9, and that of the anal is II, 8 (the 

 last partly divided ray having always been counted as 1 ) . 



Range. — Sinaloa (Mazatldn), Mexico, to (Samanco Bay) northern 

 Peru. Heretofore reported only as far south as Panama Bay. 



APOGON PARRI Breder 



Amia retrosella Evermann and Radcliffe (not of Gill), 1917, p. 64, Lobos de 

 Afuera, Peru. 



Apogon parri Breder, 1936, p. 18, fig. 7, Cape San Lucas, Baja California (orig- 

 inal description; eastern Pacific species differentiated in key). 



Head 2.4 to 2.7; depth 2.9 to 3.2; D. VI-I, 9; A. II, 8; P. 12; scales 

 23 to 26; vertebrae 23. 



Body m-oderately short, eompressed, its greatest thickness rather 

 less than half its depth; dorsal outline of head only slightly convex; 

 caudal peduncle long, compressed, 2.35 to 3.0 in head ; head compressed, 

 its greatest thickness scarcely greater than its depth at anterior 

 margin of eye; snout moderately blunt, 4.6 to 5.3 in head; eye 3.2 to 

 3.6; interorbital 4.75 to 6.75; mouth large, oblique, nearly terminal; 

 maxillary not quite reaching opposite posterior margin of eye, 1.95 to 

 2.05 in head; teeth in jaws in villiform bands, those on vomer and 

 palatines in an irregular series or in a very narrow band; opercle with 

 an embedded spine, slightly free at tip ; free edge of preopercle, above 

 lower posterior angle, mostly very finely serrate ; gill rakers definitely 

 serrate along inner edge, 10 (rarely 9) developed on lower and only 2 

 on upper limb of first arch, the rakers preceded on each limb by 2 

 (rarely 3) spiny tubercles; lateral line extending on base of caudal, 

 following curve of back; scales strongly but finely ctenoid, extending 



