528 DR. L. PFEIFFER ON NEW LAND-SHELLS. [DeC. 8, 



subrhombeo-lunaris ; perist. rectum, marginibus subconvergentibus , 



supero antrorsum arcuato, basalt incrassata, 

 Diam. maj. 22, min. 20, alt. 9 mill. 

 Hab. New Georgia. 



6. Helix evandaleana, Pfr. (1167 6). T. subanguste umbili- 

 cata, depressa, solidula, carinata, superne rugoso-striata et gra- 

 nulata, pilis brevibus obsita, subpellucida, fusca ; spira parum 

 elevata, vertice obtuso ; sutura profunda, carina magis minusve 

 prominente marginata ; anfr. 4, convexi, ultimus supra medium 

 carina funiformi et interdum angulo secundo obsoletiore circum- 

 datus, bast levius striatus, plano-convexus ; apertura obliqua, late 

 lunaris ; perist. simplex, marginibus vix convergeniibus, dextro 

 recto, basali rejlexiusculo, juxta umbilicum subdilatato, 



Diam. maj. 17i, min. 1.5, alt. 9 mill. 

 Hab. Evandale, South Australia. 



7. Helix perinflata, Pfr. (1601a). T. umbilicata, globosa, 

 solida, striis incrementi rugosis et lineis impressis antrorsum 

 descendentibus decussata, isabellino-albida ; spira convexo-conoidea, 

 apice obtusa ; anfr. 4^, ultimus magnus, ventrosus, subtus perin- 

 flatus, striis spiralibus obsolete sculptus, antice deflexus ; apertura 



diagonalis, lunari-rotundata ; perist. breviter expansum, margine 

 columellari supra umbilicum angustum fornicalim dilatato. 



Diam. maj. 23\, min. 20, alt. 20 mill. 



Hab. McDonnell Ranges, Central Australia; found by Mr. Wa- 

 terhouse on Stuart's Expedition. 



8. Helix carcharias, Pfr. (1606 a). T. subobtecte perforata, 

 conoideo-globosa, solidula, sub lente minutissime grunulata, cor- 

 nea ; spira conoidea, vertice laviguto obtusulo ; anfr. 5, convex- 

 iusculi, superi irregulariter tuberculato-pticati, ultimus ventrosus, 

 superne levius plicatus, subtus radiato-striatus, albidus, antice 

 profunde deflexus ; apertura diagonalis, subcircularis ; perist, 

 simplex, ienue, aiiguste expansum, marginibus approximatis, colu- 

 mellari fornicatim supra umbilicum late reflexo. 



Diam. maj. 17-19i, min. 13i-16, alt. lOi-14 mill. 

 Hab. Sharks' Bay, N. W. Australia. 



9. Helix curtisiana, Pfr. (1681 a). T. anguste umbilicata, 

 conoideo-semiglobosa, solida, striata, castanea ; spira conoideo- 

 convexa, superne albida, vertice obtusulo ; sutura albo filosa ; anfr. 

 6, lente accrescentes, ultimus magnus, convexus, supra medium 

 subangulatus , busi planiusculus, antice descendens ; apertura fere 

 diagonalis, rotundato-luuaris ; perist. vix incrassatum, anguste 

 expansum, margine columellari superne triangulatim dilatato. 



Diam. maj. 29, min. 2.5, alt. 1/ mill. 

 Hab. Port Curtis, N. E. Australia. 



- 10. BuLiMus ANGASiANUS, Pfr. (773 a). T. imperforata, ovato- 

 conica, tenuis, plicis longitudinalibus confertis, sulcis spiralibus 



