GARRETT : CATALOGUE OF CYPR^IDiE, 1 27 



If SO, T. inseda will undoubtedly share the same fate, as 

 they all three seem to be connected by intermediate forms. 

 Examples of T. corriigata now before me vary as much in 

 shape as the above three species. 



75. Trivia sp. We found three examples of this species under 

 coral on the outer reef on the east coast of Huahine, Society 

 Islands. 



It is shaped like T. exigua, with a distinct dorsal groove, 

 hyaline-white, and the ribs are more compressed than in T. 

 o?yza. The ends are more produced than in the latter 

 species. 



The animal, which we have only imperfectly examined, 

 is diluted white, the mantle with a wide marginal band, con- 

 sisting of microscopical light-red dots. 



The following species, not found by the writer, are recorded 

 from the South Sea Islands. 



Cyprssa (Luponia) poUta, Roberts. Sandwich Islands. 

 Mr. Roberts' description and figure accords so nearly- with the 

 shell which we have referred to C. semiplota, that I am inclined to 

 believe they are identical. He describes the teeth as being a 

 little darker than the ground color, Avhilst in our shells they are 

 pale fulvous, edged with darker lines. 



C. (Luponia) Annae, Roberts. Sandwich Islands. 



C. (Luponia) spadix, Mighels. Sandwich Islands. Mr. 

 Pease considered this species, together with C. semiplota, to be 

 varieties of Trivia staphylcEU. 



C. (Luponia) Humphreysii, Gray. Viti Islands. Dr. 

 Gould, in the ' United States Exploring Expedition Shells,' re- 

 marks that this species was found in the above group. 



