FISHERIES, GAME AND FORESTS. 



241 



106. Perca flavescens (.Uitchill). Yellow Perch. — -The species is abundant 

 in the parks of New York ami Brooklyn. It is a fairly good aquarium fish, somewhat 

 susceptible to fungus attacks, but easily treated with salt water. Its food is chiefly 

 hard clam; sometimes live killies are used. 



107. Boleosoma olmstedi {S/on-r). Tessellated Darter. — The species was 

 found sparingly in l^ronx River in August, 1897. A number of individuals were 

 placed in a balanced tank and are still living at the end of November. They are fed 

 principally on hard clam, Garmnariis, and, occasionally, earth-worms. 



108. Roccus chrysops {Rafincsque). White Bass. — Mr. Annin obtained a 

 specimen in Oneida Lake, September 4, 1896, and sent it for identification. Its length 

 is twelve and one-quarter inches, and its weight sixteen and one-half ounces. The 

 following additional measurements, in inches, were taken : 



Length to end of middle caudal rays, 



Length to end of scales, 



Depth of body, .... 



Least depth of caudal peduncle, 



Length of head, .... 



Length of snout, .... 



Diameter of eye, .... 



Length of fourth dor.sal s[)ine, 



Length of second dorsal ray, 



Length" of second anal ray, ........ \IA 



109. Roccus lineatus (B/oc/i). Striped Bass; Rockfish. — .\ permanent resi- 

 dent, but the height of the fishery in Gravesend Bay occurs from October lo to 

 November 10. Large fish, up to forty-five pounds, are caught in May, but the fall 

 fish will range from nine to twenty-four inches in length. In the Aquarium the 

 species is hardy and grows rapidly. Its food consists of killifish, pieces of herring, 

 shrimp and, occasionally, chopped clam. Many examples have been kept here three 

 and one-half years, and are still alive. 



110. Morone americana {Gmcliii). White Perch. — -This species is never 

 plentiful in Gravesend ]5ay ; it is abundant in fresh-water lakes of Central Park, New 

 York, and Prospect Park, Brooklyn. Near Montauk, Long Island, individuals 

 weighing two to three pounds and more are reported. In the Aquarium the white 

 perch is very susceptible to fungus attacks, but the parasite is readily killed by 

 changing the water supply from salt to fresh, or vice trrsa. 

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