202 



Closely allied to the preceding, but smaller, more globular, 

 not carinated, and destitute of radiated coloring beneath. 



Helicina trochlea. Testa minuta, trochiformis, supra cine- 

 rea, costis acutis volventibus 3 vel 4 (intervallis concavis, scabro- 

 sis) cincta, infra convexa, polita, citrina : spira anfr. 4, ultimo ad 

 peripheriam bicarinato : apertura sub-trigona ; peristomate levlter 

 reflexo ; columella ad basim angulata, callo copioso induta. 

 Lat. ■^, alt. ^% poll. Hab. Matea Island. 



It has the size and nearly the form of H. rupestris, Pfeif., and 

 is distinct from all others by its well-marked, sharp, revolving 

 ribs. 



Helicina multicolou. Testa parva, solidula, conico-globosa, 

 tenuissime striata, citrina, interdum fusco-fasciata, vel omnino 

 fusco-rubra, subtus convexa : spira anfr. 4 convexiusculis, ultimo 

 ad peripheriam rotundato ; sutura impressa: apertura lunata, 

 lata ; peristomate simplici, acuto, ad basim obtuse angulato ; colu- 

 mella expansa, callo copioso induta. Lat. ;^^g-, alt. y'(j poll. Hah. 

 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, Irevis, 

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

 semilunaris, extrinsecus constricta ; peristomate simplici, vix 

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

 duta. Lat. -^^^ alt. ^\ poll. Hah. Maui, and Qahu 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 linear! : 

 apertura magna, transverse semi-elliptica ; peristomate simplici ; 

 callo columellari late expanse. Lat. -}, alt. f poll. Hah. Feejee 

 Islands. 



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

 green tint and polished surface. The outer whorl enlarges very 

 rapidly. In form it resembles II. si?)iiHs, Sowb. 



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



