MOLLUSCA. 55 



Family — Helicace^:. 

 Helix. Linnceus. 



221. Helix adustus, (Plate XIX. fig. 11.) Testa umbilicata, depressa, fusca; anfractibus 

 quatuor, appressis ; spira subplanulato-depressa ; apertura suboblique lunari ; peritremate crassius- 

 culo, reflexo. 



Inhab. New Ireland. Among the fallen and decaying leaves on the shores of 

 Port Carteret. 



222. Helix squalus, (Plate XIX. fig. 12.) Testa, umbilicata, globosa, tenui, cornea, undique 

 minutissime scabra; anfractibus quinque, ultimo magno, ventricoso ; apertura magna, lunari ; peri- 

 tremate tenui, acuto, reflexo, columellam fere obtegente. 



Inhab. New Ireland. In society with the preceding. 



The surface is very minutely scabrous, apparently produced by the crossing 

 at an angle of numerous very fine lines. This circumstance has suggested the 

 specific name. 



223. Helix pyxis, (Plate XIX. fig. 10.) Testa imperforata, elata, diapbana, solidula. ; anfrac- 

 tibus quatuor rotundatis, ultimo medio carinato ; apertura compresse lunari ; peritremate acuto, 

 reflexo. 



Inhab. ? 



Family — Melaniace^e. 



Melania. Lamarck. 



224. Melania fumosa, Hinds, Ann. Nat. Hist. v. xiv. p. 8, (Plate XV. fig. 11, 12.) Testa, 

 elongata, crassiuscula, laevigata, olivaceo-fusca, unicolore, vel junioribus infra, suturam strigis longi- 

 tudinalibus rufis ornata ; anfractibus paulisper rotundatis, superne late subconcave coarctatis, lineis 

 impressis sparsim et obsolete cinctis; spira erosa apud anfractum quartum ; apertura cserulescente. 



Inhab. New Ireland. In the streams about Port Carteret. 



225. Melania aspirans, Hinds, 1. c. p. 8, (Plate XV. fig. 9, 10.) Testa elongate subulata, 

 laevigata, fusca, unicolore; anfractibus numerosis, subplanulatis, lineis arcuatis incrementi fere 

 minute pliciformibus, ultimo ad basin striato ; sutura. lineis impressis comitata ; apertura coerule- 

 scente ; columella albida. 



Inhab. Feejee Islands. In the rivers. 



226. Melania Piutonis, Hinds, 1. c. p. 8, (Plate XV. fig. 14.) Testa pyramidato-subulata, 



