126 THE SHORE FISHES. 



the ridge of nape; fins dark brown; spinous dorsal with a wide ahnost white 

 margin; soft dorsal, anal, and caudal with a narrow white margin; ventral 

 and pectoral tipped with white (probably yellow in life). 



This species is near the Atlantic species, E. acuminatus, but has a longer 

 snout and greater number of scales in lateral line. 



POMACENTRIDAE. 



Azurina upalama Heller & Snodgrass. 



Proc. Wash. Acad. Sci., 1903, 5, p. 19S. pi. 5. .Snodgrass & Helleb, Proc. Wash. Acad. Sci., 1905, 6, 

 p. 385. 



Seven specimens 4 to 4i inches long from Chatham Island shore. M. C. Z. 

 29536 (3 specimens). 



Pomacentrus rectifraenum Gill. 



Proc. Acad. Nat. Sci. Phil., 1862, p. 148. Gilbert & St.4.rks, Mem. Cal. Acad. Sci., 1904, 4, p. 140. 



Gilbert and Starks {loc. cit.) state that in this species there are constantly 

 15 soft dorsal rays and 13 anal rays, the last split ray being in each case, reckoned 

 as one. They also state that in Gill's description of the types of P. rectifraenum, 

 he assigns to it 16 dorsal rays and 15 anal rays and it is reasonable to suppose 

 that the split ray at the end of each fin was, by him, reckoned as two rays. In 

 our description, we have followed the latter plan. 



Four large specimens, 41 to 5| inches long from Acapulco. 



Nine large specimens, 3? to 64 inches long from Toboguilla Island, among 

 rocks in two fathoms of water. M. C. Z. 29448 (2 specimens). 



The Acapulco specimens have uniformly 16 dorsal rays and 14 anal rays. 

 Five of the Toboguilla specimens have 16 dorsal rays and four have 15 dorsal 

 rays; six have 14 anal rays and three have 15 anal rays. 



The above specimens show the following colors : — General color dark 

 brown, darker on top of head, lighter on breast and belly; margin of upper lip 

 and whole of lower lip pale; the scales of sides of body have dark-margins, 

 forming transverse lines; dorsal, ventral, anal, and caudal blue-black; pectoral 

 with dusky rays, paler membranes forming a dark olive shade, the two upper 

 rays are paler, base of pectoral brown body color with a small black spot at base 

 of 1st ray, a white bar, widest at the top, extending across base of the rays 

 behind, this bar sharply separating the dusky pectoral from its brown base. 

 These specimens show no traces of pearly spots. 



Nine specimens 2s to 3^ inches long from Perico Island, Panama Bay. 



