6 



381 



vexiusculis, ultimo rotundato, spira breviore ; columella leviter 

 arcuata, basi subsimpUce, callum emittente tenuem, diffusum ; 

 apertura obliąua, f ere setnicirculari ; perisi, undiąue brevissime 

 expanso. 

 Diam. maj. 7, min. 6, alt. 5 mill. 



19. Helicina Ghiesbreghti, Pfr. H. testą conoidea, soli- 

 dula, acute carinata, stj'iis incrementi et antrorsum deseenden- 

 tibus sub lenfe decussatida, sulcisque spiralibus remotis sculpta, 

 pallide liitea, ad suturam et carinam albo-fasciata ; spira con- 

 vexo-conoidea, submucronata ; anfr. 5į vix co7ivexitisculis, ul- 

 timo utrinąue convexiore ; columella brevi, superne impressa, 

 basi tuberculata, callum emittente nitidum, diffusum; aper- 

 tura perobli(iua, fere triangulari ; perist. calloso, late expanso 

 et reJ{exiusculo, ad cariniam subrostrato. — Operc. solidtdum, 

 nigro-castaneum. 



Diam. maj. 19į, min. 16, alt. 10 mill. 



4. Descriptions of Eighteen New Species of Land-Shells 



COLLECTED ON THE AdMIRALTY ISLANDS, FROM THE CoL- 

 LECTION OF Mr. H. CuMING. By Dr. L. PfEIFFER. 



(Mollusca, PI. XXXVI.) 



1. Helix meta, Pfr. (PI. XXXVI. f. 4, 5.) H. testą subobtecte 



, nir\ . perforata, cnniformi, tenuiuscula, vix striatula, nitidu, colo- 



({( - ( ' ribus varia ; spira turbinata, acutiuscula ; anfr. 6-G|^ convex- 



^■f^įj.-/ iusculis, ultimo infra medium obtuse subangulato, basi modice 



■'■ ''- '■ convexo ; apertura diagonali, rhombeo-ovali ; perist. rejlexi- 



usculo, margine dextro subjlexuoso, basali reJlexo, cum colmnel- 



lari suhverticnli, triangulatim supra per/orationem reJlexo, an- 



gulum indistinctum formante. 



Diam. maj. 23, min. 20, alt. 26 mill. 



a. TJnicolor vitrina, perist, albo. 



/3. Citrina, f ascia suturali et vitta purpurascenti-nigra pone pe- 



ristoma nigro-violaceum ornata. 

 y. Nigra,fascia 1 suturali pallida ornata, perist. nigro. 



. 2. Helix plagiostoma, Pfr. H. testą obligue umbilieata, 

 vi • ' ^ irochiformi, tenuiuscula, leviter striata, nitida, fulva ; spira 



^..\} conica, acutiuscula; sutura submarginata ; anfr. 6 convex- 

 iusculis, tdtimo antice vix descendente, carinato, basi plani- 

 usculo ; apertura perobliqua, subrhombea ; perist. simplice, 

 marginibus convergentibus, dextro late expanso, antrorsum 

 arcuato, basali reJlexo, cum columellari triangulatim dilatato, 

 libero, umbilicum non claudente angulum obtusum formante. 

 Diam. maj. 23^, min. 19, alt, 21 mill. 



3. Helix majuscula, Pfr. H. testą umbilieata, depressa, 

 suborbiculata, solidula, oblique striata et irregulariter malleata. 



U"^' 



