352 IN LOWER FLORIDA WILDS 



derived from that island and is the result of num- 

 erous migrations. Several of our varieties show 

 close relation to certain ones of Cuba but some 

 of ours seem very distinct from any Cuban forms. 

 The doom of our beautiful arboreal snails is 

 undoubtedly sealed, for everywhere in our region 

 the hammocks are being rapidly destroyed by 

 man. The building of the railroad over the Keys 

 has hastened their destruction and the Liguus and 

 Oxystylas once so abundant there are now almost 

 extinct. The very presence of the white man 

 seems fatal to them and they fade away before 

 him as most savage races have done. 



