FISHES OF HAWAIIAN ISLANDS. 
655 
Snyderidia canina, new species. Plate 92. 
Type, 309 mm. long, from station 3989, vicinity of Kauai, depth 385 to 500 fathoms; type, No. 
51646, U. S. Nat. Mus. 
Head 8.5 in total length; depth 10; distance from tip of snout to origin of anal 5.8; from tip of 
snout to origin of dorsal 7.5; diameter of eye contained 5.25 times in head, 1.2 times in interorbital 
width, the latter equaling length of snout. 
Middle of occiput and interorbital space raised to form a rounded crest; snout protruding convexly, 
upper profile concave above front of eye; mouth very oblique; maxillary extending well beyond orbit, 
equaling half length of head, its expanded portion channeled on its outer face; mandible strong and 
heavy, included within premaxillaries; mandibular angle forming a sharply projecting triangular 
process; upper jaw bearing anteriorly a pair of long curved canines which close outside mandible, and 
are separated by a wide space which is toothless, or nearly so; one of the canines double; sides of 
premaxillary with arrow-shaped cardiform teeth in a rather wide band, a few of the anterior inner 
teeth of the band longer than the others and more distinctly depressible; anteriorly in the mandible a 
pair of long curved canines corresponding to those above, but separated by a narrow interspace and 
directed obliquely backward; in side of mandible an outer series of smaller teeth and an inner row of 
conical canines, shorter than the anterior fangs; a long fang on head of vomer, with 2 pairs of shorter 
conical teeth behind it, and several very small conical teeth irregularly disposed; a single series of 
small conical teeth on the palatines, 1 or 2 of the anterior teeth much enlarged; preopercular margin 
adnate in its upper half, free below; opercle bearing 2 diverging ridges and terminating posteriorly in 
a slender flexible process which is bound down by membrane along its upper edge; lower opercular 
ridge extending into a second process which overlaps the subopercle; pseudobranchiae present as a pair 
only of well-developed filaments on each side; but 3 short gill-rakers developed on horizontal limb of 
outer arch next the angle; besides these, a number of small spinigerous tubercles, which can not be 
accurately estimated; a few inconspicuous pores on snout and on symphyseal portion of mandible; 
posterior line of occiput midway between origin of dorsal and middle of eye. 
Dorsal rays all very slender and unbranched, with but few distant articulations, and joined by a 
very thin delicate membrane; anal similar, with thicker rays; pectoral narrow, composed of very 
slender unbranched rays, its length equaling that of head. 
Ground color light grayish, almost wholly concealed by small quadrate or roundish pigment spots 
of nearly uniform size and distribution; terminal part of tail black; opercles and jaws darker, as well 
as prepectoral area; mouth and gill-cavity blackish, lining of abdominal walls jet-black; fins ns- 
lucent. 
A single specimen known. 
Family FIERASFERID^. 
Fierasfer microdon, new species. Fig. 254. 
Type, 97 mm. long, from station 3872, between Maui and Lanai islands, depth 32 to 43 fathoms; 
type, No. 51600, U. S. Nat. Mus. 
Head 14 hundredths of total length; greatest depth 10; distance from tip of snout to front of dorsal 
25; distance from tip of snout to front of anal 14. Length of maxillary 45 hundredths of head; diameter 
of eye 23; length of snout 20; interorbital width 13; depth of head at nape 60; greatest width of head 
50; length of pectoral 50. 
Head and body narrow, compressed, snout bluntly rounded, its profile nearly vertical immediately 
above mouth; mouth very oblique; maxillary failing to reach vertical from hinder edge of orbit; 
branchiostegal membranes united anteriorly, leaving about half the isthmus uncovered; teeth all com- 
paratively small, the median line of vomerine teeth being the only conspicuous canines in the mouth, 
and these much smaller than in F. homei; a few smaller teeth on each side of median vomerine series; 
palatine and premaxillary teeth minute, in bands of moderate width, none of them enlarged except 2 
or 3 near front of upper jaw (on one side only in type), these being small conical teeth, not canines; 
neither palatine nor premaxillary bands show any trace of biserial arrangement, or of enlargement of 
outer or inner series; outer series of mandibular teeth very small slender canines, hooked toward angle 
of mouth; inner teeth minute and forming a narrow band. 
F. C. B. 1903, Pt. 2 — 6 
