FI&HES OF THE PHOENIX AND SAMOaN ISLANDS 271 



115490, Hull Island, reef, July 12-15, 1939, 20 specimens. 



115501, Hull Island, shallow tidepool on reef, July 13, 1939, 103 specimens. 



Salanas walensls Pierre ^^ is uiuloubtedly this species. 



Genus ENCHELYIIRUS Peters 



Enchelimrus Petkrs, Monatsb. Akad. Wiss. Berlin, 1868, p. 2G8. (Type, Enchelyu- 

 rus flaripcs Peters.) 



ENCHELYURUS ATER (Gunther) 



Pctroscirtes ater GDnther, Journ. Mus. Godeffroy, vol. 6, pt. 11, p. 109, pi. 115, 

 fig. C, 1877. 



51788 (type of Hyplcurovhilus vaiUanti Jordan and Seale). 

 52248, Apia, Samoa, Jordan and Kellogg, 11 specimens. 

 52251, Samoa, Jordan and Kellogg, 12 specimens. 



Genus PETROSCIRTES Ruppell 



Petroscirtcs Ruppell, Atlas zu der Keise im nr)vdlichen Afrika, Fisclie, p. 110, 

 1828. (Type, Petroscirtcs mitraius Ruppell.) 



KEY TO THE SPECIES OF PETROSCIRTES FROM THE PHOENIX AND SAMOAN 



ISLANDS 3" 



Iff.. Dorsal rays 38; anal 28: pectoral 14; black band from nose to end of caudal 

 fin ; margins of anal and dorsal white, middle of these fins with black band, 

 base pale (blue in life) : eight bailiels on under side of head (chin and 



throat) Petroscirtes azureus Jordan and Seale 



1&. Dorsal rays fewer than 35. 

 2a. Dorsal rays 30 to 34. 



3a. Anal rays 22 to 24 ; dorsal rays usually 32 or 33 ; black spot behind eye 

 and several transverse bands on lower half of head; anal with white 

 spots along its base and a darker margin. 



Petroscirtes obliquus Garraan 

 3?>. Anal rays 18 or 19; dorsal rays usually 31 to 33; anal pale; dorsal with 

 a longitudinal blackish band through its middle 



Petroscirtes atrodorsalis Gunther 

 21). Dorsal rays 25 or 26 ; anal 16 or 17 ; pectoral 14 or 15 ; several multifid 

 tentacles under chin, probably absent on young, tentacle over eye; ten- 

 tacles on gill cover and nape ; a few brown specks on dorsal fin near 

 margin Petroscirtes mitratus Ruppell 



PETROSCIRTES AZUREUS Jordan and Seale 



Petroscirtes azureus .Tokdan and Seale, Bull. U. S. Bur. Fish. (1905), vol. 25, 

 p. 432, fig. 109, 1906. 



51796 (type of Petroscirtes azureus Jordan and Seale), Apia, Samoa, Jordan 

 and Kellogg. 



This species may be the same as P. taeaiatus^ if the latter has cirri 

 on the chin. 



=^ Field Mus. Nat. Hist. Zool. Sen. vol. 18. No. 12, 19:?5. 



«9My material of this genus is not sufficient to give an adequate analysis of tlie species 

 from the region \UHler consderation. 



