ICHTHYOLOGICAL COLLECTIONS OF THE ALBATROSS. 437 



Color, light grayish or brownish, pale below. A bluish-black stripe from rostral 

 spines to front of orbit. Suborbital, preopercle, and opercle with numerous dark 

 spots. A dark blotch on the side, opposite middle of first dorsal; a faint dark bar 

 under the anterior and a similar one under posterior part of second dorsal. Both dor- 

 sals with indefinite oblique dark bands. Pectorals dark except the lower proximal 

 part, with narrow bars of black ; ventrals light in females, dark in males ; anal dark 

 posteriorly; caudal dark, faintly barred. 



Stations 3219, 322.5, 3226, 3227, 3255, 3256, 3257, 3258, 3263, 3269, 3279, 3282, 3309, 

 3311, 3313, and 3330, located on both sides of the Alaskan Peninsula and both north 

 and south of the Aleutian Chain; depth, 16 to 351 fathoms. 



85. Odontopyxis leptorhynchus sp. nov. 



Very close to 0. frenatas, with which it agrees in the arrangement of plates, the 

 spines on head, and the barbels. ■ It is distinguishable at once by the elongate 

 slender snout and differs also in the following numerous details : Body somewhat 

 broader and more depressed, its greatest depth a little less than two-thirds its 

 greatest width, which occurs across preopercular spines. The body narrows rapidly 

 backward to below spinous dorsal, as in young 0. frenatus of the same size. Compared 

 with O. frenatus of the same size, the plates on body are much less spinous, the 

 superior and inferior lateral series and the ventral series in some specimens bearing 

 spines on a few of the anterior plates only; the spines of dorsal series are lower. 

 Five plates before dorsal, 10 under spinous dorsal, 2 between dorsals, 7 under second 

 dorsal, and 16 on caudal peduncle. The inferior lateral ridges rise anteriorly, greatly 

 constricting the lateral face under anterior part of spinous dorsal. It then descends 

 slightly and becomes almost or quite obsolete, the series of plates ending behind 

 the upper pectoral rays. In 0. frenatus the constriction of the lateral face does not 

 occur, the ridge is strongly marked anteriorly, and ends below middle of pectoral 

 base. In 0. leptorhynclius we have therefore a much narrower interval between the 

 anterior ends of the upper and the lower lateral series. This interval is occupied 

 by but 3 plates, arranged in a series, decreasing in size backward. 



The upper preopercular and the humeral spines are much larger than in O. 

 frenatus, the former greatly overpassing the second spine. The rostral spines are 

 similar, but the terminal plate is roughened but not serrate, the posterior spine not 

 detached. Snout greatly produced into a narrow triangular piece, which overpasses 

 the snout for a distance equaliug two-thirds diameter of orbit in a specimen 100 mm. 

 long. In specimens of 0. frenatus of this length the ends of the rostrum can barely 

 be seen from below. A few prickles present on upper side of rostrum, and the 

 usual series above pupil. Minutely serrated ridges on sides of snout, and one below 

 eye. No prickles on top or sides of head. Plates on branchiostegal membranes and 

 on gular region smaller and more numerous than in frenatus. Twenty plates on 

 breast, without spines, or the young with very small ones. 



Head 4 in length. Snout 2? in head in a specimen 100, mm. long. Eye 3^, equaling 

 longth of maxillary. Interorbital width two-thirds eye. Branchiostegal mem- 

 branes broadly united, extensively free laterally, joined to isthmus mesially to 

 extreme posterior margin, or leaving a very narrow margin free. Teeth present on 

 jaws and on vomer, none on palatines. Dorsals vi to viii-6 or 7; anal 6 or 7; 

 pectoral 14 ; ventral i, 2. Pectorals long, reaching to or beyond middle of spinous 

 dorsal, as long as snout and eye. Ventrals equaling length of snout. 



Color darker than in 0. frenatus, the under parts unmarked anteriorly, dotted 

 posteriorly with brown; ixpper parts dark brown in spirits, with six or seven more 

 or less distinct black bands, which are margined narrowly with lighter. A black 

 streak forward from eye, and several black spots and blotches on sides of head. 

 Caudal blackish. Soft dorsal dusky, obscurely marked with lighter; spinous dorsal 

 black, sharply blotched with pure white. Ventrals and lower pectoral rays white, 

 the upper part of pectorals Avith ol)scure bars of black. 



A few specimens from stations 3215, 3219, 3222, 3229, 3259, 3265, and 3267, north and 

 south of the Alaskan Peninsula, in 32 to 59 fathoms. 



