186 DEEP SEA FISHES. 
eighth times the length of the snout. Barbel short, less than half the 
length of the eye. Four gills, a slit behind the fourth; membranes hardly 
united, free from the isthmus; rakers short, one fourth as long as the eye, 
curved, 4 + 12 on the forward edge of the first arch. Pseudobranchiz 
glandular. Vent below the twenty-first ray of the second dorsal, or about 
midway from head to end of dorsal base. 
First ray of anterior dorsal longest, more than two thirds as long as the 
head, prolonged in a filament, above the axil of the pectoral. The notch 
between the dorsals is very narrow. Anal fin originating below the twenty- 
second ray of the second dorsal, median rays shortened. Pectorals small, 
more than half as long as the head. Ventrals inserted about half way 
between the pectoral bases and the isthmus, first ray long, second ray 
longest and filamentary, nearly as long as the longest ray of the dorsal, 
three fourths as long as the head. Caudal pedicel slender; fin narrow, 
median rays longest. 
Scales small, thin, bearing longitudinal striz on half or more of their 
length, covering body and head. Branchiostegal rays and bases of fins 
scaly. Eleven series of scales between the dorsal and the lateral line. 
Dark brownish, probably tinted with purple in life; linings of mouth, 
gill chamber, and abdomen black. 
In comparison with types of A, viola it is found that the violet color of 
the latter appears on a specimen that has lost its scales; on such as have 
the scales the color is dark brown to blackish. The description of A. rostrata 
says “ This species is readily distinguished by the peculiarly produced snout, 
which forms a short, triangular, pointed lamina, sharply keeled on the sides, 
and overreaching the cleft of the mouth.” The figure given in the “ Chal- 
lenger”’ report is not so sharply keeled on the sides, but for this reason it no 
doubt better represents a specimen on which the tissues are not so much 
contracted and shrunken by preservatives. A. rjina has a longer dorsal and 
smaller scales than A. microlepis, and it differs in other respects, though the 
two species are somewhat closely allied. 
Station. Latitude. Longitude, Depth. Temperature. Bottom. 
3353 iG aloVeN. 80° 34’ W. 695 fathoms 39° F. m. M. 
3393 Moo lolaNs 79° 36’ W. 1020 oe 36.8° F. Gn. M. 
