37 



mellaexpansa, callo copioso induta. Lat. ■£?, alt. -^ poll. Hab. 

 Tongataboo. 



A very delicate species, and one of the smallest known, and 

 principally remarkable for its variable coloring. 



Helicina uberta. Testa parva, solida, sub-globosa, laevis, 

 dilute citrina ; spira anfr. 4 ; sutura impressa : apertura parva, 

 semilunaris, extrinsecus constricta ; peristomate simplici, vix 

 reflexo ; columella callo flavo copiosissimo, haud appresso, in- 

 duta. Lat. ¥ 7 jj, alt. ^ 3 q poll. Hab. Maui, and Oahu Mountains. 



Very remarkable for the abundant golden yellow callus which 

 forms a tongue-like projection across the base of the shell. 



Helicina beryllina. Testa solidula, depresso-conica, infra 

 convexa, ad peripheriam obtuse angulata, polita, albido-virens : 

 spira anfr. 5 planulatis, ultimo cito crescente ; sutura lineari : 

 apertura magna, transverse semi-elliptica ; peristomate simplici ; 

 callo columellari late expanso. Lat. ^, alt. f poll. Hab. Feejee 

 Islands. 



Rather large as to size, and remarkable for its delicate bervl- 

 green tint and polished surface. The outer whorl enlarges very 

 rapidly. In form it resembles H. similis, Sowb. 



Helicina pallida. Testa Ienticularis, solidiuscula, luteo-ci- 

 nerea, inequaliter striata, epidermide tenuissima induta : spira 

 depressa; anfr. 5 acute carinatis, planatis : apertura semilunaris, 

 ad columellam callosa ; labro modice reflexo. Lat. T 3 ^, alt. J^ 

 poll. Hab. Feejee Islands. 



Resembles somewhat H. miniata, Lesson, which is more solid, 

 polished, lip simple, suture double. In shape and color it is like 

 H. oxystoma, Gray, but is smaller, and the lip not angular at the 

 carina. 



Cyclostoma tiara. Testa solida, turbinata, rudis, distorta, 

 sordide alba, late umbilicata : spira anfr. 5 laxis, rotundatis, 

 spiraliter liratis, supernis undulatis ; inter liros lineis incremen- 

 talibus conferte clathratis : apertura circularis, peristomate sim- 

 plici. Lat. f, alt. h poll. Hab. Upolu. 



This rather large species stands at the head of a group of rude 

 and very variable species from the Pacific Islands. They have 

 a bony structure, are coarsely indented, and grooved spirally, 

 often have the whorls nearly disjoined, and the umbilicus so 

 large as to approximate to Solarium. 



