218 



dent, one meeting only was held during the month, specially 

 appointed for July 25th. 



Dr. Gould presented a paper by Dr. W. Newcomb, of 

 Albany, describing five species of Achatinella, as follows : — 



1. Achatinella physa. A. testa sinistrorsa ad apicem acu- 

 minata, infra valde inflata ; striis obliquis rudi mode signata ; anfr. 

 6, quinque inferloribus plano-convexis, ultimo perinflato et obso- 

 lete carinato ; sutura simplici et valde impressa ; columella brevi, 

 sub-callosa, lata et umbilicum profundum quodammodo tegente, 

 apertura magna, semi-ovata ; labro infra sub-reflexo, tenui et 

 superne simplici ; colore e fusco albo, interdum flammulis flavis 

 notato ; interne ad citri similitudinem subluteo. Long. ^| poll. ; 

 lat. ^§ poll. Hab. Hawaii. 



Shell sinistral, pointed at the summit, strongly inflated below, 

 rudely striated obliquely ; whorls six, first five flatly convex, the 

 last largely inflated, and obsoletely carinated ; suture simple and 

 deeply impressed ; columella short, slightly callous, broad, and 

 partially covering a deep umbilicus ; aperture large, semi-ovate ; 

 lip sub-reflected below, thin and simple above ; color of a dingy 

 white, occasionally marked with yellow flammules, internally of a 

 light lemon yellow. 



Originally described in Zoological Proceedings, London, 1854, 

 plate 24, fig. 64, in an immature state. 



2. A. UNDULATA. A. tcsta sinistrorsa vel dexlrorsa, sub-solida, 

 acuto-conica, nitente, polita, longitudinaliter et spiraliter cum striis 

 per-pusillis insculpta ; anfr. 6, rotundis et superne marginatis ; 

 sutura bene impressa ; apertura sub-ovata ; columella brevi in 

 plictl contorta ; labro acuto intus incrassato ; colore testse sub- 

 olivaceo, lineis et vittis longitudinalibus paulisper undulatis cas- 

 taneis intersecto, rare fasciis nigris transversis notato; colum- 

 ella et apertura albida. Long. J-§ poll. ; lat. ^% poll. Hab. 

 Waialua, Oahu. 



Shell sinistral or dextral, rather solid, acutely conical, shining, 

 polished ; with longitudinal oblique fine stria) ; microscopically 

 spirally striate ; whorls six, rounded and marginal above ; suture 

 well impressed ; aperture sub-ovate ; columella short and pli- 



