114 



CALIFORNIA ACADEMY OF SCIENCES 



specimens is 5-44 or 45-10. The margin of the spinous dorsal varies in color from 

 dusky to black, but we have some small specimens, collected by the Albatross, in 

 which the fins may be said to be immaculate. 



Our specimens of the young up to 65 mm. in length show light brown cross- 

 bars on back. One at the nape runs obliquely downward and backward to the upper 

 end of gill-opening; one at the front of the spinous dorsal runs obliquely downward 

 and forward to lateral line, nearly meeting the one at the nape; between these there 

 is a shorter vertical bar, and more posteriorly are several bars running downward and 

 forward, which become more or less indefinite along the middle of their length. One 

 or two of these bars are represented by the spots on the upper edge and at the middle 

 of the caudal peduncle. 



Our material from the Atlantic is so meager that we are unable to discuss 

 relationships between E. calif or niensis, E. hnrengulus, and E. pseudogula. 



Measurements hi Hundredths of Length without Caudal. 



Locality 



Chatham 

 I., Gala- 

 pagos 



Length without caudal ex- 

 pressed in mm 



Head 



Depth 



Eye (inside of adipose eyelid).. 



Pectoral 



Second dorsal spine 



Second anal spine 



Caudal 



Ventrals 



Snout 



Number of dorsal rays 



Number of anal rays 



Scales 



156 



30 



32 



9 



32 



i7i- 

 8i 

 28 

 16 

 ^o\ 

 IX, 9 

 HI, 7 

 5-45-10 



211. Xystaema cinereum {'Walhaum). 



Panama records are by Giinther, 18G9, p. 391 (as Gerres squamipinnis) ; and 

 Jordan, 1885, p. 384. 



212. Gerres aureolus Jordan <i~ Gilbert. 

 Known only from the type taken by Gilbert at Panama in 1881. 



