1862.3 MR. W. H. PEASE ON TWO NEW HELICTERES. S 



culatis ; lateralibus elongatis, angustis, cequalihus ; nmhowbus 

 inclinatis, erosis. 

 Long. 2f, lat. 2^, diam. 1^^ poll. 



Hab. In flumine Palembang prope Pardana, in insula Java {Coll. 

 Prime). 



2. Batissa SOLIDULA, Prime. 



B. testa ovato-orbiculari, (equilaterali, crassa, solida, latere an- 

 tico dilatato, postico latiore, epidermide poliia atro-fusces- 

 cente vel olivacea vestita ; valvis intus albis, ad margines in- 

 feme posticeqiie violaceis ; eardine incrassato ; dentibus eardi- 

 nalibiis subcequalibus ; lateralibus elongatis, angustis, serrula- 

 tis ; umbonibus prominentibus, integris, antice inclinatis. 



Long. 2i lat. 2^-, diam. 1-J- poll. 



Hab. ? {Coll. Cuming et Prime). 



3. PisiDixjM Nov^ ZELANDi^, Prime. 



P. testa minuta, ovali, valde obliqua, tenui, fragili, postice sub- 

 truncata, umbonibus obtusiusculis, approximatis, epidermide 

 corneo-flaveseente vestita. 



Long, i, lat. -\, diam. -^ poll. 



Hab. In Nova Zelandia {Coll. Cuming et Prime). 



2. Descriptions of Two New Species of Helicter (Acha- 

 TiNELLA, Swains.), from the Sandwich Islands, with a 

 History of the Genus. By W. Harper Pease. 



We venture to add two species to the above genus, and to adopt the 

 generic name given to this group by Ferussac, as having priority 

 over that of Achatinella of Svrainson. The history of the genus will, 

 we think, justify us in so doing. Not having met with any account 

 of it in a connected form, we offer the follovping to be filled out 

 hereafter by those abroad who have within their reach materials we 

 cannot command in this corner of the world. 



It is not probable that any specimens of this genus were collected 

 by Capt. Cook, or those attached to the expedition under his com- 

 mand, as they anchored on their first visit at the most leeward island 

 of the group, Kauai, and, on their return from the north-west coast 

 of America, at the most windward, Hawaii, having but little or no 

 communication with the intermediate islands. With the exception 

 of one species, rarely met with on the mountains in the interior of 

 Hawaii, none but small ground species inhabit either of the above 

 islands, the true Helicteres being confined to the central islands 

 of the group. 



The earliest notice we find of any species of this genus is in the 

 narrative of the first commercial expedition that visited the islands 

 after their discovery by Capt. Cook. It consisted of two vessels, the 

 one under command of Capt. Portlock, the other under Capt. Dixon : 



