1871.] MR. HARPER PEASE ON POLYNESIAN LAND-SHELLS. 4()~ 



T. globoso-conoidea, crassa, tenuissime radiatim striata, omnino 

 straminea aut albida, interdum rufescens, juxta suturum straminea, 

 apex semper straminea; spira conoidea, convexa, obivsa; anfr. 5, 

 convexiusculi, ultimus ad peripheriam rotundatus vel indistincte 

 angulatus ; callus basalis, nitidus, albidus, circumscriptus ; aper- 

 turafere luharis ; perist. simplex, rectum, incrassalum ; columella 

 arcuata, simplex, cum perist. continua. 



Diam. 7, alt. 5^ mill. 



The above, collected at the Tahitian Islands, was confounded by 

 M. Hombron with a species inhabiting the Hawaiian Islands de- 

 scribed by Dr. Philippi. 



Helicina gtjppyi, Pse. 



Helicina humilis (Guppy, non Hombr.), Ann. Nat. Hist. ser. 4, 

 vol. i. p. 434 (1868). 



To prevent confusion I alter the name of the above West-Indian 

 species, which was preoccupied for one inhabiting Polynesia. 



Helicina colorata, Pse. 



Helicina colorata, Pse. Am. Journ. Conch. 18G8, p. 156. 



Helicina anaaensis, Mouss. Journ. de Conch. 1869, p. 66. 



The above is the only species inhabiting the island of Annaa, 

 where it was collected by Mr. Garrett. The above name was given 

 to it by reason of the many variations of colour it passes through. 

 It is wholly whitish, or of different shades of yellow or red, some- 

 times banded with the same colours ; occasionally the last whorl is 

 yellow, and the spire bright crimson. 



Helicina flavescens, Pse. 



Helicina flavescens, Pse. Am. Journ. Conch. 1867, p. 228. 



Helicina pacifica, Pse. Am. Journ. Conch. 1865, p. 291. 



The redescription of the above species by myself arose from omitting 

 to name the specimens in my collection when first described. I 

 retain the above name as being more appropriate and its description 

 more full. 



Genus Taheitia. 



Taheitia, H. & A. Ad. Ann. Nat. Hist. 1863, p. 19. 



The chief and, I may add, the only peculiarity which serves to 

 distinguish the above genus from Truncatella is its operculum. The 

 other characters mentioned by Messrs. Adams, viz. the porrection 

 of the last whorl and its being disconnected from the penultimate 

 whorls, are not constant. 



Taheitia aurantia, Gld., can scarcely be distinguished from Trun- 

 catella pacifica, Pse., in any of its characters except the operculum. 

 Taheitia pallida, Pse., is also in all respects a Truncatella except 

 the operculum. 



The East-Indian species wallacei, H. Ad., and clathrata, H. 

 Ad. & Ang., are more characteristic of this genus than the Polyne- 



