128 THE SHORE FISHES. 



the smaller ones show distinct black spots on anterior base, each surrounded by 

 pearly spots giving the appearance of an ocellus. 



Ponaacentrus gilli Gilbert & Starks. 

 Mem. Cal. Acad. Sci., 1904, 4, p. 141, pi. 22, fig. 44. 



Three specimens 2s to 4| inches long from Acapulco. 



All have dorsal rays 15, one has anal rays 14, and two have them 13. 



Five specimens M. C. Z. 29567, 21 to 41 inches long from Perico Island. 

 All have dorsal rays 15, and anal 13. 



Six specimens 2? to 3| inches long from Toboguilla Island, among coral 

 in two fathoms of water. Of these five have dorsal rays 15, and six have anal 13, 

 one has dorsal 16. 



One specimen, M. C. Z. 29453, 2? inches long from Perico Island. This 

 has 15 dorsal rays and anal 13. 



The three specimens from Acapulco have general color brown, the posterior 

 edges of scales darker, forming transverse lines on sides of body ; faint pale spots 

 on sides of head, none on front of head or nape, both lips pale; no blue line on 

 top of eye; a few pale spots on soft dorsal, anal, and caudal; pectoral very pale 

 and translucent with no distinct spot at base of upper ray, base darker than 

 body color both in front and behind; no di.stinct white bar on base of pectoral 

 rays behind; in the two larger specimens no trace of spot or ocellus on anterior 

 base of soft dorsal ; a large black spot on anterior base of soft dorsal in smallest 

 specimen; in the two larger specimens the posterior margin of soft dorsal and 

 anal paler; in smaller .specimen, posterior margins of these fins abruptly pale; 

 a small black spot on upper base of caudal peduncle. 



The five specimens from Perico Island are similar in color to the above but 

 slightly paler; the spots on head more distinct; none show pale spots on rays of 

 soft dorsal, anal, or caudal; all have some pale spots on scaly base of anal; the 

 two larger specimens show very slight traces of paler posterior margins to dorsals 

 and anals. On the two next in size this is more distinct and on the smallest it is 

 abruptly paler, none showing traces of spot or ocellus on soft dorsal, or spot on 

 top of caudal peduncle. The largest one shows no white spot on axil of dorsal 

 or anal. The next in size has a spot on base of posterior rays of anal, the others 

 having these in axil of both fins, that of anal extending on to rays. 



The six specimens from Toboguilla are similar in color, all but one darker 

 than the preceding; spots on head very distinct; the smallest is pale with 

 distinct spot at base of first pectoral ray; outer margin of vertical fins dusky 



