SHORE FISHES OF GALAPAGOS ISLANDS 407 



Batistes verres GILBERT & STARKS, Mem. Cal. Acad. Sci., iv, 153, pi. xxvi, 

 fig. 49, 1904, Panama ; Mazatlan. 



Range. Pacific coast of Central America ; Revillagigedo, Clip- 

 perton, Cocos and Galapagos islands. 



We have 13 specimens from Cocos, Clipperton, Albemarle, Charles, 

 Chatham, Seymour, Harrington and Bindloe islands. They agree in 

 number of scale rows and numbers of fin-rays with mainland specimens, 

 having a slightly greater number of both than specimens of Balistes 

 capi 'stratus, with which Polynesian species B. verres is otherwise 

 almost identical. 



139. CANTHIDERMIS ANGULOSUS (Quoy & Gaimard). 



Balistes angulosus QUOY & GAIMARD, Voyage Uranie, Zool., 210. HOL- 



LARD, Monograph des Balistides, Pt. 2, An. Sci. Nat. 1854, 2d Ft, 57 



(Pacific Ocean). 

 Balistes longissimus HOLLARD, An. Sci. Nat., 1854, 2d Pt., 60, pi. in, fig. 



(4)7 Pacific Ocean. 

 Balistes lorigus GORNOW MS. in Gray, Cat. Fishes Brit. Mus., 37, 1854, 



American Ocean. 



Range. Western Pacific ; Cocos Island. 



We have i specimen of a Canthidermis from Cocos Island. It 

 is the first species of the genus reported from the eastern Pacific. 

 Giinther placed a large number of similar forms together in the 

 synonymy of Canthidermis {Balistes) maculatus. It is undoubtedly 

 true that a large number of the forms thus condensed are the same 

 species, but it is also probable that his list includes the names of sev- 

 eral distinct species. The characters that have been assigned to these 

 various forms are principally differences in number of dorsal and anal 

 rays, and of color. Of those species that have approximately 24 or 

 25 dorsal and 21 or 22 anal rays, some are spotted (representing 

 probably maculatus) while others have a plain coloration. Of these 

 latter, the name angulosus of Quoy and Gaimard appears to be the first 

 under which they were described. Our specimens we identify as being 

 probably the same as the type of Canthidermis angulosus. In 1871, 

 Gill described a young example (4 inches long) as Balistes melanop- 

 terus from "Darien" (Isthmus of Panama), which, if it came from 

 the Pacific side, may be the same as our specimen, although it was 

 spotted, for spots might easily be characteristic of the young of a spe- 

 cies that is plain when adult. 



Description of the specimen. Length 360 mm. ; head 3^ ; depth 

 2-f ; longest dorsal spine 3^ ; caudal 3^ ; pectoral 2 in head ; eye 4^ 

 in head; D. Ill, 25; A. 22; pectoral rays 14; scales 45; scales in 



