400 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 
12. Nannobrachium nannochir Gilbert. 
The present status of this species and its distinctive characters have been dis-— 
cussed under the preceding form. The correlated differences are so constant in or 
specimens that they can not be ignored, yet are small in amount. They depend 
neither on age nor sex. From among the original type specimens I select as specific 
type No. 1459 of the Leland Stanford Junior University Museum, from station 3072. 
Specimens in the present collection from stations 3211, 3307, 3308, 3327, 3329, 3338, 
3340, 3342, and 3348, including the entire North Pacific ane Bering Sea, at depend of 
313 to 1,625 fathoms. | 
Family ARGENTINIDA. The Smelts. 
13. Mallotus villosus (Miiller). Capelin. 
Dredged in shallow water at three stations in Bristol Bay, Alaska; 3235, 3238, and 
3240, depths 11 to 18 fathoms. 
14. Thaleichthys pacificus Richardson. Hulachon; Candle-fish. 
A single fine specimen of the candle-fish was taken near the mouth of the Nushagell 
River, June 3, 1890. 
15. Osmerus dentex Steindachner. Rainbow Herring. 
Occurs abundantly in the Naknek and Nushagak rivers, and forms an important 
part of the food supply of the natives. At the time of our visit (June 1-3) it was 
running rather sparingly. Specimens were secured with the seine in both of the 
above-mentioned rivers, and in the trawl at station 3231, in Bristol Bay, depth 12 
fathoms. 
16, Osmerus thaleichthys Ayres. 
Several young specimens, probably to be referred to this species, were taken in 
the Nushagak River nearits mouth. They exhibit the characteristic weak dentition 
of this form, the teeth being barely perceptible on jaws, vomer, and tongue. The 
scales number 55 and 58 in the course of the lateral line, and the anal rays 14 and 16. 
The maxillary is short, scarcely reaching to below middle of eye. 0. thaleichthys has 
not been previously reported from Alaska. 
17. Leuroglossus stilbius Gilbert. 
One specimen from station 3330, off the northern shore of Unalaska Island, at the 
depth of 351 fathoms, and several mutilated examples taken from the stomach of a 
Macrurus at station 3332, in 406 fathoms. The largest of these is 120 mm. long. 
Family SALMONID A. 
18. Coregonus laurettz Bean. 
A young individual, 125 mm. long, was taken at the mouth of the Nushagak River, 
June 3. The lower jaw is very slightly longer than the upper; the eye is of mod- 
erate size, 44 in head; the scales are rather large in size, 84 being present along the 
lateral line; and the gill-rakers are long and numerous, 25 present on horizontal 
limb. A similar specimen was taken in the Naknek River (scales 87). 
19. Oncorhynchus gorbuscha (Walbaum). Humpback Salmon. 
The humpback salmon was seen by us at Port Méller, on the northern side of the 
Alaskan peninsula, duriug two visits which included the first two weeks and the last 
week of July. During the first part of this month they were running in small num- 
bers, and as a few scattering ones only had been taken at Unalaska up to June 16, it 
is safe to indicate the Ist of July as the beginning of their appearance on that part 
of the coast. inthe early part of their run they proved a very acceptable table 
fish, but later they rapidly deteriorated. On our return to Unalaska, July 31, we 
learned that they had been running for several weeks, and during several visits in 
the month of August they were found in incredible numbers crowding into the 
