42 



S.MITilSOXlAX .MISCELLAXEOLS COI. LECTIO XS 



VOL. '72 



outside keys. 'J'his was rendered eoni])araiively easy, since ihev were 

 fortunate enoui;h to find the mosquito ])ests ])racticall\- al)sent. 

 Between May 3 and 6 they examined every sandspit on the mainland 

 alono- Key Biscayne Bay. Card Sound. Little Card Sound and Barnes 

 Sound. They then tiumed the southern ])()rtion of Barnes Sound 

 and came u]) alono- the outer keys, examining' them in turn. They 

 crossed Key Lari^o at several places and walked lonj^ stretches in its 

 interior. 



No Cerions were found on the mainland Ijetween INIiami and the 

 ]X)int where the railroad enters the ke}s. hut two colonies were dis- 



FiG. 42. — Xest of .swallow-tailed kite (Ekmoides forficatiis forficatus) 

 between Flamingo and Coot Bay, Cape Sable, Florida. 



covered on keys a very short distance from the mainland in Barnes 

 Sound. One of these is situated on a sandspit covered wdth _2^rass and 

 shrubhery on Middle Key, while the other one was found in a clear- 

 ing on the southeastern point of Main Key. No Cerion colonies 

 were discovered on the keys forming the eastern ])erimeter of Barnes 

 Sound, Little Card Sound, Card Sound and Key Biscayne Sound, 

 excei)ting Porgee Key, where a goodly quantity were obtained, some 

 of which have been dissected and published upon in the bulletin on 

 " Experiments in the Breeding of Cerions '' recently issued bv the 

 Carnegie Institution. In addition to Cerions, collections of all the 

 other species of land moUusks available were made wherever found at 



