ICHTHYOLOGICAL COLLECTIONS OF THE ALBATROSS. 429 



Color: Olivaceous above, light yellow with more or less silvery ou sides of head 

 and belly. Traces of four saddle-shaped bauds of darker color reaching across back 

 aud below lateral line; one uijder first dorsal, two under second dorsal, and one on 

 back of caudal peduncle. More or less of the outer portion of gill-membranes black, 

 edged i)ostcriorly with white. Gill-cavity black and roof of mouth dusky. Perito- 

 neum silvery grayish. Dorsal and caudal fins indistinctly blotched with black, the 

 blotch on the doi'sal corresponding more or less closely to the bars on the back. A 

 large black blotch on upper i)art of pectoral aud on sides of body just above axil. 



Several specimens, from 68 to 155 nun. in length, taken from stations 3215, 3222, 

 3223, 3224, 3225, 3309, and 3339, south of Sannak aud nortii of Unalaska Island, in 

 43 to 138 fathoms. 



72. Triglops xenostethus sp. nov. (Plate 29.) 



Differing widely from other species of Triglops in the investment of the breast, 

 which is without trace of folds and is covei'ed by small, closely imbricated spinous 

 scales, not arranged in series. In all other species of the genus the breast is crossed 

 by a few cutaneous folds similar to those on sides of body. In T. xenostethus the 

 sides of the abdomen are covered similarly to the breast, but the scales are arranged 

 in more or less evident series, some of which can be traced above into the cutaneous 

 folds. The body is not slender, the lateral folds are not very numerous, the scales 

 on head and on upper part of Ijody are very coarse. 



Dorsal xi-23; anal 23; pectoral 16; ventral i, 3; lateral line 43 ; branchiostegals 6. 



Body shaped as in T. inngeli, rather heavy at shoulders, tapering gradually back- 

 ward, its depth 6 in length. Caudal i)eduncle slender, its least depth 4f in its 

 length, which is two-thirds length of head. 



The upper profile of head descends rapidly in a strong convex curve, unbroken to 

 tip of snout. Mouth large, maxillary reaching vertical from middle of pupil, 2| in 

 head. Eye 3^- in head, snout 3|. Interorbital sjiace very narrow, one-fifth orbit, the 

 orbital rim not elevated, the space neither grooved nor ridged. A pair of broadly 

 rounded occipital ridges, not ending in spines. Nasal spines short and inconspic- 

 uous, a broad depression behind them. Preopercle with four ill-defined projections 

 between the mucous pores, but without definite spines Gill-membranes as usual. 

 Pectoral rays apparently all simple, the lower ones thickened. Prickles covering 

 dorsal region and back and sides of head unusually coarse aud lew in number. The 

 usual series of enlarged prickles along either side of base of dorsals. Folds below 

 lateral line numerous, very oblique, two or three to each jilate of the lateral line. 

 On sides of abdomen anteriorly to vent the prickly scales bordering the folds form 

 a dense mass in which the linear arrangement is still faintly visible. The breast is 

 covered with a very dense patch of similar scales still more closely crowded. The 

 lower part of cheeks and opercles and the preorbital region naked. Very light 

 grayish above, with the usual four crossbars, those under soft dorsal and on back of 

 tail broader than usual. Under parts whitish, becoming bright silvery on breast 

 aud belly. A series of irregular silvery white blotches along lower margins of the 

 dorsal crossbars. Pectorals dusky at base of upper and lower rays, with two convex 

 dusky bars on distal half. Snout aud cheeks more or less dusky. 



A single specimen 66 mm. long, from station 3220, north of Unalaska Island, at a 

 depth of 34 fathoms. 



ELANURA gen. nov. 



Moat nearly related to Prionistius, from which it differs in the presence of a series 

 of enlarged scutes along each side of base of dorsal fins, in the presence of spinous 

 cross folds on the breast, and in the very deeply forked caudal fin. From Triglops 

 it differs in the forked caudal, in the great elongation of the body, and in the 

 lengthened dorsal and anal fins. It agrees with Triglops and ['rionisiius in all other 

 important structural details, including the exserted, more or less produced lower 

 pectoral rays, 



