494 



ZOOLOGICAL SOCIETY BULLETIN. 



While the sea water sup- 

 ply is now very nearly per- 

 fect, it is still impossible to 

 furnish .-ill the denizens of 

 the tanks with the foods to 

 which they are accustomed 

 in the tropics, and this dif- 

 ficulty may have had some- 

 thing to do with the loss of 

 the crayfishes. 



DOLPHIN, (Delphinus delphis) . 

 Photograph by L. B. Spencer. 



trouts and salmons now in the Aquarium is a 

 remarkably good one. While such fishes are 

 easily kept during the winter, there are usually 

 a number of losses during the summer months 

 when the tanks containing northern fishes have 

 to be cooled by refrigeration. The cold water 

 system now in use has many imperfections and 

 should be replaced with something more modern. 



■Bar Crabs. — T h e inter- 

 esting and oddly-shaped box 

 crabs, {Calappa flammed), 

 received from Bermuda last 

 summer have thrived in cap- 

 tivity. These crabs, usually 

 motionless during the day, are often quite active 

 in the evening. The species differs greatly in 

 appearance from any crab hitherto exhibited at 

 the Aquarium ; the first pair of legs are re- 

 markably broad, and when folded, form a shield 

 to the front of the body. 



Fish Hatchery. — The Aquarium is at present 

 hatching a consignment of eggs of the silver 

 salmon received from the Pacific Coast in Feb- 

 ruary. The quinnat salmon hatched from eggs 

 received from California last summer are still 

 in splendid condition. Sev- 

 eral hundred thousand white- 

 fishes hatched in February 

 have been turned over to the 

 State Fish Commission for 

 planting. 



Hawksbill Turtle. — In March the Aquarium 

 received an unusually large and handsome speci- 

 men of the hawksbill or tortoise-shell turtle 

 from Bermuda. 



Color Changes of Fishes. — In February the 

 Director of the New York Aquarium spent a 



Spiny Lobster. — The very 

 large spiny lobsters received 

 last summer from Bermuda 

 were gradually lost during 

 the winter on account of im- 

 perfect shedding. W h i 1 e 

 these animals had no diffi- 

 culty in casting off the cara- 

 pace and tail portions they 

 did not seem to be able to 

 free their legs. 



HORSESHOE CRAB, WITH LIVING OYSTERS ATTACHED. 

 Photograph by L. B. Spencer. 



