\46 



emittente ; apertura obliqua, suhtriangulari-semiovali ; perist. 



dilatato, late expanso, margine supero levissime sinuato. 

 Diam. maj. 13, min. 10, alt. 8^ mill. 

 Locality unknown. 



9. Helicina bicolor, Pfr. H. testa depresso-conoidea, acute 

 carinata, tenuiuscula, striatula et sub lente minutissime punc- 

 tato-granulata, albida, fasciis 2 fuscis supra et infra carinam 

 ornata ; spira brevi, conoidea, acuta ; anfr. 5, convexiusculis, 

 rapide accrescentibus, ultimo non descendente, basi convexiore ; 

 columella fusca, brevi, subarcuata, dilatata, basi in unguium 

 subspiniformem terminata, callum emittente circumscriptum, 

 fuscum ; apertura diagonali, late subtriangulari ; perist. dila- 

 tato, piano, expanso, intus fusco ; margine supero subrepando, 

 basali substricto. 



Diam. maj. 11|^, min. 9, alt. 6 mill. 

 From Tahiti. 



10. Cyclostoma Fortunei (Cyclotus), Pfr. C testa umbi- 

 licata, turbinato-depressa, solidula, subtiliter striatula, fulva, 

 castaneo minute marmorata et infra medium unifasciata ; spira 

 brevissime turbinata, vertice subtili; sutura simplice; anfr. A\, 

 convexis, ultimo terete, non descendente ; umbilico conico, pro- 

 fundo, ^ diametri subcequante ; apertura fere verticali, subeir- 

 cidari, superne leviter angulata ; perist. simjjlice, recto, an- 

 fractui penultimo breviter adnato. Qperc. calcareum, arcti- 

 spirale. 



Diam. maj. 12^, min. 10, alt. 7 mill. 

 From Shanghi, China {Mr. Fortune). 



11. Cyclostoma LoxosTOMUM (Cyclophorus), Pfr. C. testa 

 umbilicata, depressa, discoidea, solidula, confertimfiloso- striata, 

 fusco-fulva, maculis pallidioribus conspersa ; spira plana, vertice 

 suhiililiaud prominent e ; anfr. 5, convexiusculis, sensim accres- 

 centibus, idtimo terete, antice dilatato, non descendente ; umbi- 

 lico paterceformi, ^ diametri superante ; apertura diagonali, 

 subcirculari, intus margaritacea ; perist. continuo, breviter ad- 

 nato, recto, subduplicato, vix incrassato. 



Diam. maj. 13f, min. U, alt. 4 mill. 

 From Ceylon (Mr. Lear). 



12. Cyclostoma fornicatum (Cyclophorus), Pfr. C. testa 

 umbilicata, sublenticulari, tenuiuscula, lineis elevatis concen- 

 tricis confertis sculpta, epidermide corneo-virente, vix nitidula 

 induta ; spira brevi, fornicata, vertice rubello, obtusulo ; anfr. 

 4, vix convexiusculis, celeiiter accrescentibus, ultimo convexiore, 

 medio acute carinato ; umbilico profunda, ^ diametri sub- 

 cBquante ; apertura obliqua, ovato-circulari ; perist. simplice, 

 recto, subinterrupto, marginibus approximatis, columellari sub- 

 patente. 



Diam. maj. 9, min. 7, alt. 3| mill. 

 From the New Hebrides. 



