42 Cincinnati Society of Natural History. 



its habit of building a nest in the breeding season. Many species 

 of the genus build very elaborate nests. 



Gasterosteus aculeatus, var. cataphractus, J. and G. Salmon, 

 killer. 2201. 



Order 12. Acanthopteri. 

 (Spiny-rayed Fishes.) 



Family Atherinidae. 

 (The Silver Sides.) 



Atherinops affinis, Steind. Little Smelt. 2203. 

 Chirostoma merridium, Gill. Sardine. 2204. 

 Leuresthes teruuis, J. and G. 2205. 



Family Ammodytidae. 

 (Sand Launces.) 



Ammodytes americanus, DeKay. Sand Eel. 2207. 



Fish of this genus live in shoals, rising with one accord to the 

 surface, or else diving to the bottom, where they bury themselves 

 in the sand. Porpoises watch the shoals and keep them at the sur- 

 face by diving below and swimming round them. Large numbers 

 are thus destroyed. 



Family Scombridce. 



(The Mackerels.) 

 Scomber scombrus, Linn. Eastern Mackerel. 2206. 

 A very important food fish, with a body temperature several 

 degrees higher than other fishes. 



Family Carangidie. 

 (The Pilot Fishes.) 



Caranx crumenopthalmas, L. Goggler ; Big-eyed Scad. 

 2213. 



Caranx hippus, Gthr. Horse Crevalle. 221 1. Found in both 

 .\tlantic and Indian-Pacific oceans. 



Caranx pisquetus, Cuv. and Val. Leather Jacket. 2210. 



Selene vomer, Lutken. Moon fish ; Look-down ; Horse-head. 

 2156. 



Seriola zonata, C. and V. Rudder Fish. 2212. 



Trachurus plumeri, J. and G. 2208. 



Trachynotus carolinus, Gill. Pompano. 2209. 



Said to be the most valuable fopd fish of our Southern waters. 



Family Pomatomidie. 

 (The Blue Fishes.) 



Pomatomus saltator, Gill. Skip-jack; Blue fish. 2214. 



The favorite of fishermen of seaside resorts. .\ specimen 



