428 



ZOOLOGICAL SOCIETY Bl'LLETIN. 



THE SEA-LION POOL, NEW YORK AQUARIUM. 



spots of the skin show faintly. It came fi'om 

 the salt marshes of Texas, and is probably the 

 species known as Malademmys littoralis. 



Bulletin. A thousand copies of the Aquar- 

 ium number of the Bulletin were sold at the 

 Aquarium during the past year. 



Tuna. Mr. JM. G. Foster, of New York, a 

 member of the Zoological Society, has pre- 

 sented to the Aquarium a mounted specimen 

 of the tuna, taken by himself at Santa Cata- 

 lina Islands, California. The weight of the 

 fish when killed was 152 pounds and the time 

 required for its capture with rod and reel was 

 forty-three minutes. 



Albino Trout. Among the brown trout 

 fry hatched during the year, were 133 per- 

 fect albinos, with pink eyes ; nearly all of these 

 survived and have grown quite as rapidlj' as 

 those of normal coloration and are now six 

 inches long. Four of the pink-eyed albino 

 lake trout fry received at the Aquarium in 

 ]\Iarch, 1905, are still living and average 

 twelve inches in length. 



LUMINOUS FISHES. 



FISHES possessing phosphorescent or- 

 gans are fairly common in the surface 



waters of the sea, but the vast majority 

 of such fishes are found in the depths of the 

 ocean, and this is true not only of the fishes, 

 but the invertebrates as well. 



Below a couple of hundred fathoms, light 

 does not penetrate, and wherever deep sea 

 forms are found, the gloom of the depths is 

 doubtless brightened considerably by animal 

 phosphorescence. 



Modern deep sea explorations have shown 

 that perhaps a majority of the deep sea fishes 

 possess luminous organs of more or less 

 power, which are disposed in a variety of ways. 



Deep sea blind fishes have been discovered 

 in which the phosphorescent organs are very 

 large. Such organs are usually visible in 

 fresh specimens as whitish spots on various 

 parts of the head and body, and are probably 

 useful to the animals possessing them in seek- 

 ing their prey. 



