FISHES FROM THE REVILLAGIGEDO ARCHIPELAGO. 281 



Family MONACANTHIDJG. 



53. Cantherines carolae Jordan & McGregor, new species. (Plate 6.) 



Head 3-rV; depth 2; D. 1-38; A. 34; eye 5. J. Body elliptical, compressed; 

 anterior profile somewhat concave, ohlique ; mouth small ; teeth large, white, 

 and irregular. Gill-opening somewhat in front of pectoral, its length 3J in 

 head; dorsal spine very stout and straight; everywhere rough, but without 

 distinct barbs ; 1+ in head ; dorsal rays 2 in head ; anal ray 2 in head ; caudal 

 short and rounded, If in head; pectoral 2$ in head. Pelvic bone with ven- 

 tral spine firmly attached, with about 10 radiating spinules; ventral flap 

 little developed; caudal peduncle with four strong, bluutish spines, tinned 

 forward and arrayed in two pairs, one above and one below the middle line. 

 Color dull grayish-olive; head finely speckled with darker; fins all pale; 

 lips whitish. Length 11 inches; two specimens from Socorro Island. 



The species is named for Mrs. Charlotte C. McGregor. 



54. Ceratacanthus scriptus (Osbeck). Thirteen specimens from Clarion and 



Socorro islands. A specimen has been recently sent us from the Veuailos 

 Islands at Mazatlan, by Dr. George Warren Rogers. 



Family TETRAODONTIDiE. 



55. Ovoides setosus (Rosa Smith). Very abundant about Socorro and Clarion 



islands; 48 fine specimens taken; mostly in shallow water during low tide 

 at Clarion Island. These vary in color from pure lemon-yellow to indigo- 

 blue and dark brown, with round white spots. There are also various 

 intergradations, as yellow blotched with blue, the singular variations in 

 coloration being parallel with those of Kyphosus lutescens. 



Family DIODONTIDiE. 



56. Diodon hystrix Linnaeus. Five specimens from Clarion and Socorro islands. 



Family EMBIOTOCIDiE. 



5 7. Abeona minima (Gibbons). One specimen. Todos Santos Bay. 



58. Brachyistius frenatus Gill. Five specimens from Guadalupe Island, 4 to 5 



inches in length. These are somewhat deeper than the typical form from 

 California, but we do not think them specifically distinct. Also taken at 

 Todos Santos Islands. Head 3; depth 2; D. vm-13; A. in, 22; scales 44; 

 eye in head 3 ; pectoral in head 1 £ : ventral 1-J ; second anal spine 4-$ : middle 

 caudal rays 2-L Body short and compressed ; back elevated ; head depressed 

 above snout, which sharply projects; mouth, small, projecting, maxillary 

 not reaching to opposite eye. Gillrakers 23, slender. Color olivaceous 

 above with darker blotches on each scale, forming lengthwise stripes; lower 

 parts tinged with coppery; a large moon-shaped black spot in axil of pec- 

 toral, nearly as large as eye, but not so wide ; fins pale, lower ones, especially 

 caudal, flushed with orange. 



59. Embiotoca jacksoni Agassiz. Specimens taken at Todos Santos, San Benito, 



Cerros, and Guadalupe islands. 



60. Taeniotoca lateralis (Agassiz). Two specimens from San Benito Islands. 



Family POMACENTRIDiE. 

 AZTJRINA Jordan & McGregor, new genus. 



This genus is closely allied to Chromis, from which it differs in the long and 

 slender body, the low vertical fins, the very deeply forked tail, the pointed 

 snout, and especially in the continuous lateral line which extends much 

 beyond the dorsal fin, and is wanting on but two or three scales. 



