322 TISHES FROM BRAZIL JORDAN. 



lower. It agrees fairly with Cuban specimens {Gerren patao Poey), but 

 has the second anal spine lower and the ventrals paler. Probably all 

 belong to one species. 



69. G-erres rhombeus Cuv. & Val. 



Anal spines, two; i)reinaxillary groove naked. 



70. Gerres olisthostoma (Goode & Bean). 



Several, constantly with anal spines three aud the preraaxillary 

 groove scaled. 



71. Gerres pseudogula (Poey). {Gerres jonesi Gunther.) 



Several specimens. 



EPHIPPID.E. 

 72. Cheetodipterus faber (L.). 

 Young specimens. 



CH.ETODONTID.E. 

 73. Chaetodon striatus (L.). 

 . Several, agreeing well with Giluther's description. 



74. Pomacanthiis aureus (Blocli). 



Several specimens, adult and young, agreeing well with the account 

 given by Eigenmaun, Ann. N. Y. Acad., 1887. In the adult, the caudal 

 is pale at base aud tip, the dorsal has a narrow pale edge behind ; each 

 large scale has a dark spot; there is no pale stripe before eye, and the 

 space behind preopercular spine is pale. One specimen is from the 

 Abrolhos Islands. 



75. Pomacanthus arcuatus (LiniiiBiis). 



One adult. This species is well distinguished from the preceding at 

 all ages by the smaller scales and by the presence of ten dorsal spines 

 instead of nine. The adults of the two are also different in color. In 

 P. arcuatus each scale has a whitish crescent; there is a white stripe 

 from eye to nostril ; the caudal and dorsal are without pale edge, and 

 there is no pale area behind preopercular spine. In both species, the 

 young show pale cross bands, aud of these the one behind the shoulder 

 persists longest. 



76. Holacanthus ciliaris (L.). 

 Several, of different ages. 



77. Holacanthus bicolor (Blocb). 



• Several specimens. 



