132 gibbons: on W. INDIAN PULMONIFERA. 



P. pellucida, Pfr. Habana, Barbadoes, and Spanish Main. 



Omalonyx feiina, Guppy. Georgetown. This is a most interest- 

 ing mollusc. It lives among plants at the very edge of the 

 water, but is quickly drowned if placed in the latter, and 

 death is almost equally rapid when taken away from water. 

 In Mr. Guppy's list {Q. J. C, p. 109), it is mentioned as 

 peculiar to Trinidad. 



Succinea Barbadensis, Guild. Barbadoes. Unlike most mem- 

 bers of the genus, this will bear considerable deprivation of 

 moisture; during the dry season, the animal ascends the 

 trunks of trees, attaches the mouth of the shell firmly to 

 the bark and then retires as far within the shell as possible. 

 A Vera Cruz species (? S. aurea, Lea) is equally able to with- 

 stand drought. 



S. approximans, Shut. St. Lucia, Grenada, and Tobago, A 

 broader and more globose species. 



Vaginulus Sloanii, Fe'r. Habana. Eggs are subglobose, )^-in. 

 or more in length, pellucid, with a membranous capsule; 

 they adhere to each other, forming a hemispherical mass 

 I to 1 1 inch in diameter; a distinct rounded band of firm 

 and elastic mucus encircles the upper border, preserving 

 the shape of the mass. Eggs deposited in June. 



Melampus CofFeus, L. Habana, Puerto Plata and St. Thomas, 

 Demerara and Spanish Main. Cuban differ from Demeraran 

 shells in being less sharply angulate, in spire being more 

 raised, sides less flattened, and color lighter (? var. Gund- 

 lachi, Pfr.) 



Limnaea Cubensis, Pfr. Habana, in a roadside rill. L. 

 umbilicata^ Ads., is a synonym according to Poey. Adams 

 mentions occurrence of latter in Jamaica, Cuba, and 

 Massachusetts (Contr. to Conch, i., 50). Binney assigns Z. 

 umhilicata to Z. caperata. My Habana shells are quite 

 distinct from Z. caperata and have but a remote resemblance 



J.C.ii., May, 1379 



