KISIIEKIES, GAME AND FORESTS. 233 



61. Cyprinodon variegatus {Lnccpedc). Lfbias ; Short Killifisii— Mr. 

 Spencer has kept a male aiul two females in a balanced jar nearly two years. They 

 have bred at least once, and the young were reared to a length of five-eighths inch 

 when they disappeared suddenly, and it is probable that they were eaten by the adults. 

 This is one of the best of the Cyprinodonts for aquarium purposes. 



62. Tylosurus marinus {\Valba117n). Silver Gar; Needle-fish. — The silver 

 gar is to be found in Gravesend Bay from June to September. It never stands 

 transportation, and cannot be kept long in captivity. 



63. Eucalia inconstans {Kirtland). Brook Stickleback. — Living examples 

 were obtained from Mr. James Annin, Jr., at Caledonia, N. Y., April 10, 1896. For 

 some unexplained reason it is difficult to keep the fish alive either in balanced or 

 circulating- tanks; it does better in the former. One indixitlual of the lot above 

 mentioned is now alive in a balanced tank. It has always been shy, but feeds readily 

 upon hard clams and Ganiniarns. 



64. Pygosteus pungitius {I.iunceus). Nine-spined Stickleback. — Less 

 abundant in Gra\esund 15a)- than the following two species. In the Aquarium it is 

 not difficult to keep alive. 



65. Gasterosteus bispinosus {Walbaimi). STiCKLEBACK.^The adults have 

 been kept in a balanced marine tank many months, and young were obtained and 

 reared to the length of about half an inch, but they were then eaten by the adults. 

 All of this species were killed by warm water in the summer of 1896. 



66. Apeltes quadracus {Mitchill). Thkee-spixed Stickleback. — A hardy 

 species in circulating tanks ; but none have ever been known to breed in captivity. 

 Their food consists of chopped hard clams and broken shrimps. 



67. Siphostoma fuscum {Storcr). Pipe-fish. — The pipe-fish is moderately 

 common in summer in eelgrass and sea lettuce in Gravesend Bay. It is difficult to 

 find suitable food for it in the Aquarium, and, as a consequence, it is short-lived. 

 The species likes shrimp with eggs and small Gaminanis. Several examples taken at 

 Sandy Hook, October 8, 1897, are still alive in a slightly circulating tank in the 

 Aquarium, in a temperature of 54*^ Fahrenheit. They feed well upon Gaminants 

 and seem to be in good condition. 



68. Hippocampus hudsonius {De Kay). Sea-Horse. — The sea-horse is 

 sometimes found in large nunibers in the nets at Gravesend Bay, but has not been 

 abundant since 1S95. It endures captivity for a few months only ; individuals have 

 been kept eight months in a " balanced " tank, where the}- thrive best. The food 

 consists of Unciola and shrimp eggs. 



