SHORE FISHES OF GALAPAGOS ISLANDS 389 



head conspicuously not so steep, in P. leucorus evenly retreating from 

 snout to front of spinous dorsal or but gently curved, never steep and 

 bulging in front or almost vertical before eyes ; serrations on preoper- 

 cle and suborbital much finer, especially those on the preopercle ; pre- 

 orbital less deep, being about J of eye while in P. redemptus it is 

 almost as deep as eye ; fins and profile of body same in the 2 species. 



105. POMACENTRUS REDEMPTUS Heller & Snodgrass. 



Eupomacentrus rectifrcenum, JORDAN & MCGREGOR, Rep. U. S. Fish Comm. 



for 1898 (1899), 282 (Clarion and Socorro islands). 

 Eupomacentrus flavilatus, JORDAN & McGREGOR, ibid., 282 (Clarion, Socorro 



and San Benedicto islands). 

 Pomacentrus redemptus HELLER & SNODGRASS, Proc. Wash. Acad. Sci., v, 



1903, 200, pi. vi, Clarion Island. 



Range. Revillagigedo Archipelago. 



Similar in shape to Pomacentrus jenkinsi Jordan & Evermann 1 of 

 the Hawaiian Islands. Differs from this species in having the subor- 

 bital serrated and in having (in alcohol) a yellow color diffused over 

 the caudal peduncle and the posterior part of the body. 



106. POMACENTRUS ARCIFRONS Heller & Snodgrass. 



Pomacentrus arcifrons HELLER & SNODGRASS, Proc. Wash. Acad. Sci., v, 

 1903, 202, pi. vn, Barrington Island. 



Range. Cocos and Galapagos islands. 



A very abundant species ; easily recognized by the strongly arcuate 

 profile of the forehead and top of head, and by the bright orange color 

 of the lips. 



107. NEXILARIUS CONCOLOR (Gill). 



Euchistodus concolor GILL, Proc. Acad. Nat. Phila. 1862, 145, lanama. 

 Nexilarius concolor, JORDAN & EVERMANN, Fishes North and Mid. Amer., n, 

 1559, 1898. 



Range. West coast of tropical America and Galapagos Archi- 

 pelago. 



We have one specimen of this species taken at Elizabeth Bay, Al- 

 bemarle Island, Galapagos. Length, 137 mm. 



Color in life. Above dark brownish-olive ; sides with 4 broad, 

 vertical bars of dark brown, a yellowish tinge on areas between the 

 bars ; a straw-yellow blotch behind pectoral ; dorsal and anal fins 

 tipped with bright greenish-blue ; ventrals bright green ; other fins 

 dusky. 



1 Rep. U. S. Fish Comm. for 1902 (1903), 189. 



Proc. Wash. Acad. Sci., January, 1905. 



