FISHES OF HAWAIIAN ISLANDS. 655 



Snyderidia canina, new species. Plate 92. 



Type, 309 mm. hnv^. fr.uu station 3989, vieiiiitv ,.f Kauai, depth 385 to .500 fatlioms; tvpe No 

 51646, IT. S. Nat. Mas. 



Head 8.5 in total length; depth 10: distance from tip of snout to origin of anal .xS; 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 convexlv, 

 upper profile concave above front of eye; mouth very oblique; maxillary extending well beyond orbi'ti 

 equaling half length of head, its expanded portion channeled on its outer face; mandiblestrong and 

 heavy, included within ]iremaxi!laries; mandibular angle forming a sharplv projecting triangular 

 process; upper jaw Ijearing anteriorly a pair of long curved canines which close outside mandibuCand 

 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; anteriorlv in the mandible a 

 pair of long curved canines corresponding to those above, but separated by a narrow interspace and 

 directed ol)liquely 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 irregularlv disposed; a single series of 

 small conical teeth on the palatines, 1 or 2 of the anterior teeth much enlarged; i)reopercular margin 

 adnate in its upper half, free below; opercle bearing 2 diverging ridges and terminating posteriorly'in 

 a slender flexible process whicli is bound down by membrane along its upper edge; lower opercular 

 ridge extending into a second process which overlaps the subopercle; pseudoljranchia? present as a pair 

 only of well-developed filaments on each side; but 3 short gill-rakers developed on horizontiil limb of 

 outer arch next the angle; besides the.se, 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 Ijy 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 i)igment spots 

 of nearly uniform size and distributi.m; 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; tin's -is- 

 lucent. 



A single specimen known. 



Family FIERASFERID.^. 

 Fierasfer microdon, new sjiecies. Fig. 254. 



Type, 97 mm. long, from station 3872, between Maui an.l l.anai islands, depth ;{2 to 4:i fathoms- 

 type. No. 51600, U. S. Nat. Mus. 



Head 14 hundredths of total length; greatest depth 10; disbmce from tij. of snout to front of ,lor«al 

 2o; distance from tipof snoutto frontof anal 14. Length of maxillarv 45 hun.lredths of head- .liameter 

 of eye 23; length of snout 20; interorbital width 13; dej.th of liead at najie 60; greatest wi.lt'h of he-id 

 50; length of pectoral 50. 



Head and body narrow, compressed, snout bluntly nmudcl, its ..rotile nearlv vertical immediatelv 

 above mouth; mouth very oblique; maxillary failing to reach vertical fron, hinder ed-e of orbit- 

 branchiostegal membranes united anteriorly, leaving about half the isthmus uncovere.l- teeth all com-^ 

 paratively small, the me.lian line of vomerine teeth being the only conspicuous canines in the mouth 

 and these much smaller than in F. homel; 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 -^ 

 or 3 near front ot upper jaw (on one side only in type), these being small conical teeth, not canim's- 

 neither palatine nor premaxillary bands show any trace of biserial arrangement, or of eidar-ement of 

 outer or inner senes; outer series of mandibular teeth very small slender canines, hooked toward •ingle 

 of mouth; inner teeth minute and forming a narrow band. 



F.C.H. 19U3,Pt.2— 6 



