ICHTHYOLOGICAL COLLECTIONS OF THE ALBATROSS. A405 | 
3333, north of the Aleutian Islands, in depths of 19 to 71 fathoms; but the species is 
* evidently not abundant in Bering Sea. No examples were taken in any of the very 
- numerous dredgings made in Bristol Bay. 
In life the sides are olive-brown, and the upper parts show faint traces of 6 or 7 
_ broad dusky crossbars, which correspond to or alternate with an equal number 
below the lateral line. The anal and ventral fins, the branchiostegal and gular 
- membranes, the lower pectoral rays, and the snout are blue-black. Anterior edge 
_ of orbit and front edge of preorbital light yellow. The pores on edge of preopercle, 
_ two pores above and behind maxillary, and three at upper edge of opercle, bright 
searlet. A large black blotch on anterior dorsal rays. Distal half of anterior 
portion of dorsal fin and upper pectoral rays yellow. 
The outer ventral ray is single and inarticulate, followed by five branched rays. 
Only the first two dorsal rays are spinous, being soft and flexible, but unjointed. The 
third and all following rays are jointed and forked. All the anal rays are jointed. 
A specimen from station 3211, 35 mm. in length to base of caudal, shows that the 
ventrals occupy very different positions in adults and in young. In the latter they 
are truly thoracic in position and are inserted as much behind base of pectorals as 
they are located in advance of this point in adults. A specimen 65 mm. long is 
entirely similar to adults in this respect. 
35. Bathymaster jordani Gilbert. 
A single small specimen, agreeing perfectly with the description of the types, from 
Bristol Bay, station 3262, depth 43 fathoms. The species has been heretofore 
reported only from Puget Sound and from Wrangell, Alaska, and the present record 
forms a notable extension of its range. It can be distinguished at sight from 
B. signatus, the common Alaskan form, by its slender body, scaly cheeks, and the 
enlarged scales of the lateral line. 
Family CHIRIDZ. 
36. Pleurogrammus monopterygius (Pallas). 
A single specimen of the Atka mackerel, which had been taken several years before 
in the harbor at Unalaska, was presented by the Alaska Commercial Company. The 
species is almost unknown at Unalaska. 
37. Hexagrammus ordinatus Cope. 
This species is closely related to H. asper, the dorsal being continuous but well 
notched at union of soft and spinous portions, the scales ctenoid throughout except 
on under parts of body, and the cheeks and opercles partly naked. The two species 
differ conspicuously in shape, color, and fin formule. 
H. asper is very slender in shape, tapering rapidly from below front of spinous 
dorsal backward to the very slender caudal peduncle. In H. ordinatus the depth is 
greater and diminishes very slowly backward, the body tapering gradually into a 
high compressed caudal peduncle. The vertical height of caudal peduncle equals 
distance from tip of snout to or beyond middle of eye in H. ordinatus, while the same 
measurement is less than length of snout in H. asper. In H. ordinatus the snout is 
shorter and more bluntly rounded, the eye smaller, the mouth smaller, and the cheeks 
shorter and wider. The squamation is also more complete, the cheeks being entirely 
invested, except for the area immediately overlying the suborbital stay. The snout 
and the lower side of the head, including the interopercles, are also devoid of scales. 
The breast is covered with scales which have no spinous points, and the same is true 
of the ventral scales in adults, but the body is otherwise invested with strongly 
ctenoid scales, which extend well upon the bases of the fins, the caudal fin being 
covered to behind its middle. 
The upper line of mucous pores is well developed, reaching to opposite middle of 
soft dorsal. Anteriorly the two lines converge, typically meeting at a point just 
