PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 299) 
DESCRIPTION OF A NEW ENIBICTOCOID (ABEONA AURORA), 
FROM MONTEREY, CALIF ORNEA, WEITIE NOTES ON A RELATED 
SPECIES, 
By DAVID S. IGRDAN and CHARLES H. GILBERT. 
Body very elongate, with dorsal and ventral outlines evenly curved ; 
caudal peduncle very long, thick at base; snout blunt and rounded, top 
of head everywhere transversely pain and the occipital region but 
little depressed. 
Mouth small and oblique, the lower jaw somewhat shorter than the: 
upper and included. The maxillary reaches but two-thirds the distance 
to front of orbit; premaxillaries anteriorly about on a level with lower 
rim of orbit. 
Teeth long and strong, somewhat compressed and incisor-like, arranged. 
in a close series; each tooth with three short-rounded lobes near the end, 
the middle lobe the longest; their form precisely as in Abeona minima. 
These incisor teeth are crowded, with the lobes overlapping, and often 
with one slipped entirely behind the others. 
Scales of cheeks in three distinct series below, in one posteriorly. Be- 
hind this outer row and well separated from it are, in the upper jaw, 
from two to several distinct canines, there being usually a pair near the: 
middle of the jaw. Gill-rakers one, feeble, of moderate length. Lower 
lip thin, with a frenum. 
Dorsal fin with the spines from the fifth or sixth to the eleventh, longer 
than the others, about equal to each other and to the longest soft ray. 
Pectorals not reaching as far as dothe ventrals, which scarcely reach the 
vent. Caudal forked for nearly half its length. Ventral groove almost 
obsolete ; the distance from ventrals to vent about equals the length of 
the anal fin. 
Lateral line with 40 to 45 scales (4-45-13). 
Color bluish black above, becoming lighter on lower half of sides 
silvery below. Opercles and lower half of sides punctate with black 
dots and shaded with light orange or rose red, the latter here more 
intense on the centers of the scales. A broad grayish area extending 
backward from the axil of the pectorals, without orange tints and dark- 
ened by black punctulations on the edges of the scales; this area ends 
opposite the origin of the anal fin; above it the orange shade forms a 
rather distinct band from the lips to the base of the caudal. Axil of 
pectorals black, especially above. Fins plain, speckled with blackish. 
Anal somewhat yellow. 
Hingrays es V UL, 17 >. A., TTT, 20. 
The intestines were filled with a species of Ulva, indicating a vege- 
table diet. 
This species is known to us from fifteen examples taken in the bay of 
Monterey, and purchased by us in the San Francisco market. 
