FISHERIES, GAME AND FORESTS. 



223 



Length of ventral, ......... 2]^ 



Snout to anal, . . . . . . . . . • '63 8 



Anal base, ........... lyk 



Longest anal ray, ......... i^ 



Last anal ray, .......... lyi 



Snout to adipose dorsal, . . . . . . . • 175^8 



Width of adipose dorsal, ........ ]/2 



Length of adipose dorsal. ........ J^ 



Length of pectoral, ......... 3 ^ 



Upper jaw, ........... 2i/( 



Ma.xilla, ........... 2 



The head has about 28 dark spots, the largest on the gill-cover, oblong, Sg inch long. 

 Body with many large and small black spots, a few with a pale ring around them, and some as 

 large as the largest on the gill-cover; one on the caudal peduncle of one side distinctly 

 X-shaped. General color dark bluish gray ; belly and lower parts iridescent silvery. Fins 

 all dusky ; the dorsal with many black spots. Eye pale lemon, the upper part dusky. 



Gill-rakers 9 plus 11, the longest ^ inch. B. 11; D. 10; scales, 21-123-20. 



44. Salmo mykiss {Wa/bamn). ]5i.ACK-SPOTTEl) Tkout ; Red-TIIROAT Trout. 

 — The Lake Tahoe, California, trout form 5. inykiss Iicnshawi (Gill & Jordan), was 

 obtained by Mr. James Annin, Jr., and reared at his establishment. Young individuals 

 were sent by him in November, 1896, and thrived in the Aquarium until the latter 

 part of June, 1897, when they were overcome by warm water. They would not 

 endure the transfer to salt water. 



45. Salmo gairdneri {Richardson). Steelhead Trout. — From information 

 furnished b}- Mr. Annin, it appears evident that some of the eggs of trout received at 

 Caledonia, N. Y., many years ago, from the McLeod River, California, as rainbows, 

 really included both rainbows and steelheads. He finds certain females producing 

 deep salmon-colored eggs, while in the same pond and receiving the same food as 

 other females which furnished very light-colored, almost white, eggs. Some of the 

 females also differ in going to the spawning beds nearly two months in advance of 

 others. It is now known also that the McLeod contains a small-scaled form of the 

 rainbow, known to the Indians as the no-shee, and this also may easily have been sent 

 to the East under the name of rainbow. Striking differences in the appearance and 

 habits of so-called rainbows introduced into the various States lend color to this 

 supposition. 



The steelheads now in the Aquarium were obtained in November, 1896, from the 

 United States Fish Commission. They were hatched from eggs shipped from Fort 



