IOI FISHES OF SINALOA. 473 
as by Dr. Gilbert. These small specimens are identical 
with those obtained by Xantus at Cape San Lucas, the 
types of Czrrhites betaurus. It has been supposed that 
these are the young of Cvrrhites rivulatus Valenciennes, 
-abundant about the Galapagos and Revillagigedos, as no 
differences except those of color appear. The color differ- 
ences are, however, strongly marked, and we are disposed 
to let Czrrhites betaurus stand provisionally as a distinct 
species. The coloration of detawrus has been well de- 
scribed by Dr. Gill; that of rzvu/atus is well figured by 
Dr. Giinther. 
First dorsal fin bright orange red in life; second red- 
dish; cross bands on body black. 
Family CICHLIDAZ. 
170. Heros beani Jordan. MojaArra VERDE. 
Common in the deeper and more quiet places in the 
Rio Presidio, especially just below the village of Presidio. 
It reaches a length of about eight inches, and is occasion- 
ally taken by the hook, its habits being very simiar to 
those of the abundant sun fishes as seen in the more 
northern waters. 
Adult light olive, banded with darker; black spots on 
each scale. First dorsal edged with dark red, the two 
black blotches and black bars obsolete. Young with the 
bars distinct; no blue, yellow or red in life. 
Family POMACENTRID/E. 
171. Eupomacentrus rectifrenum (Gill). PrEscapo 
AzuL. (Pomacentrus analigutta Gill. ) 
This beautiful fish is very abundant in the rock pools 
about Mazatlan. It is excessively wary and hard to catch. 
Great changes in coloration, due to age, have been no- 
ticed by Dr. Giinther and others. The chief peculiarity 
2p SER., VOL. V. (31) August 15, 1895. ° 
