85 FISHES OF SINALOA. 457 
128. Lutianus aratus (Giinther). Parco RAIZERo. 
This beautiful species is not very abundant about Maz- 
-atlan, specimens being only occasionally taken. It rarely 
reaches five pounds in weight. It is generally distributed 
along the coast, having been recorded from Punta Arenas 
by Gilbert, and from Chiapam and Panama by Giinther. 
Dark green, the dark stripes on sides dark brown, the 
interspaces yellowish white; belly coppery red; some 
bluish on cheek; pectoral maroon red; ventrals salmon 
red, the first ray white; anal creamy red; caudal dark 
red, blackish towards tip; dorsals dusky; throat silvery. 
129. Rabirubia inermis (Peters). Plate xxxix. 
The original type of this species in the museum at Ber- 
lin was said to have been brought from Mazatlan. <A 
single specimen from Panama is in the museum of Stan- 
ford University. In this species the supra-occipital crest 
is continued forward on the head to the ethmoid region, 
as in the genus Ocyurus. This character widely separates 
tnermzts trom the genus Lutzanus. The genus Feabirubia 
Jordan & Fesler, of which it is the type, is separated 
from Ocyurus chiefly by the small number of the gill- 
rakers. 
Family HAEMULIDE. 
130. Hemulon sexfasciatum Gill. Roncapor ALME- 
JERO. 
This species reaches a larger size than any other of the 
group, none that were found by us being less than two feet 
in length. It is not very common, living mainly about 
the islands. It was obtained by Peters and Gilbert at 
Mazatlan, and ranges from Cape San Lucas to Panama. 
2p S=R., VoL. V. (30) August 15, 1895. 
