576 PROCEEDINGS OF THE ACADEMY OF [Dec, 



shells were common in the same locality. This seems a favorite 

 species with the land hermit crab. 



Aperostoma dubiosum (C. B. Ad.). 



Orange Hill. Found living in the Orange Hill gully, also in the 

 clays with the other semi-fossil specimens. 



ERICIID^J (CYCLOSTOMATID^]). 

 Colobostylus bronni (C. B.Ad.). 



Orange Hill, Rose Mount. Very plentiful in the Orange Hill 

 gully, moving over the moist rocks. After rains, this species was 

 seen at both localities ascending trees to escape the wet, and resting 

 upon the trunk under shelter of the branches. They frequently 

 ascended the trees for 20 or 30 feet. Many of the specimens collected 

 were paired when taken. 



Adamsiella irrorata Gloyne. 



Orange Hill. Very common in the Orange Hill gully, moving 

 about upon damp rock surfaces. 



HELICINID^J. 

 Helicina neritella angulata C. B. Ad. 



Orange Hill and Rose Mount. 

 Stoastoma. 



Eight species of this genus were collected at Orange Hill and Rose 

 Mount. 



Eutrochatella pulchella (Gray). 



Orange Hill and Rose Mount. 



Alcadia palliata (C. B. Ad.). 



Semi-fossil in the clay-filled fissures in the limestone, Orange Hill 

 gully. 



Lucidella aureola (Fer.). 



Orange Hill and Rose Mount. Very plentiful in the dry logwood 

 plantations and among the rock exposures on the Rose Mount 



estate. 



Lucidella persculpta n. sp. 



Orange Hill and Rose Mount. 



PROSERPINIDJE. 

 Proserpina nitida Gray. 



Orange Hill. 



