[5] FISHERIES OF THE UNITED STATES. 391 



Stenodus maclcenzii Rich. 



Coregonus sp. iiidet. 



Somniosus microeephalus (Bl. Sehn.) Gill. 



Galeorhinus zyopterus Jor. & Gilb. 



Triglops pingelii, which was prematurely recorded by me from off 

 Point Bingham, Gulf of Alaska, has recently been obtained in South- 

 eastern Alaska by Capt. Henry E. Nichols, his example, which is 

 large, does not differ from our numerous Atlantic specimens, 



Delolepis virgatus, the scaled genus of Cryptacanthidw, is now known 

 to extend southward to Washington Territory. 



Chirolophus polyactoceplialus has been taken by Mr. E. W. Nelson 

 only. 



Potamocottus gulosus (Grd.) (Cottopsis gulosus Girard) was obtained 

 in a mountain lake near Mount Tongass, Southeastern Alaska, by 

 Captain Nichols. 



Stenodus maclcenzii has long been expected from Alaska, but was 

 only recently received from Mr. Nelson ; it is abundant in the Yukon, 

 and is the largest white-fish in the Territory. 



The humpback white-fish of the Yukon resembles Coregonus syrolc 0. & 

 V., but appears to be an undescribed species. 



We have Somniosus microeephalus jaws now from Southeastern Alaska 

 and from Saint Michael's. 



About three-fifths of the Alaskan fishes are useful for food and bait, 

 and more than one-half of the number are well adapted to the uses of 

 man. At least 40 of the species are widely distributed, and about 50 

 others are found in great abundance, where they occur at all. 



The flounders and fiat-fishes (Pleuronectidcv) are represented around 

 the whole coast, one species extending from Colville River throughout 

 Alaska, and south to San Luis Obispo, California, being the most widely 

 distributed flounder known to me. From Unalashka north the number 

 of species is smaller than in the Gulf of Alaska and around the Aleu- 

 tians. All the species are suitable for food, and most of them are 

 excellent. The halibut is especially good, even plumper than its At- 

 lantic congener, and reaches a weight of 300 pounds. It is exceedingly 

 abundant wherever fur-seals and other fish-eating pinnipeds do not 

 annihilate its young, living as far north as Saint Michael's. In the 

 Gulf of Alaska it is everywhere plentiful, and is destined to become the 

 source of an important industry. The single large Pleuroneetes is P. 

 stellatus, which is extremely abundant and important for food. The 

 small Pleuroneetes glacialis, which abounds from Saint Michael's north- 

 ward, makes up in numbers what it lacks in size, and forms a valuable 

 addition to the food supply of travelers by sea. The common Lepidop- 

 setta bilineata exists in great numbers over a wide area; it is a food-fish 

 of great excellence. Limanda aspera and Hippoglossoides ehtssodon are 

 good, but, occurring at greater depths than the last, they have much 

 less importance. 



