32 



Genus Partula. 



Partula hyalina. Part, testa oblongd, hyalind, anfractibus 

 sex, longitudinaliter levissime striatis et transversim minutissime 

 creberrimeque linearis ; labro albo : long. X V> lat. iV polL 

 Hab. in Polynesia. (Oheataroa.) 



The sculpture of this elegant species is most minutely delicate. 

 — W. J. B. 



Genus Achatina. 

 Achatina Dactylus. Ach. testdfusiformi, subpellucidd,Jlave» 

 scente, strigis rubro-castaneis longitudinalibus raris ; anfractibus 

 septem, striis longitudinalibus minutissime crenulatis debris, et 

 suturam versus crenulatam lineis circiter sex transversis : long. 

 2tV, lat. -rV poll. 

 Hab. in Insula Tumaco. 



The body whorl is large and long, and the upper whorls decrease 

 rapidly. The sculpture, especially when viewed through a micro- 

 scope, is most elaborate. — W. J. B. 



Genus Cyclostoma. 

 Cyclostoma Cumingii. Cycl. testa orbiculari, subdepressd, 

 albicante, epidermide fused ; spird elevatiusculd, earned; an- 

 fractibus quinque vel sex, rotundatis, spiraliter sulcatis ; suturd 

 subdecurrente ; aperturd fere circulari, obliqud, alba, superne 

 subacuminatd, peritremate simplici subincrassato ; umbilico max- 

 imo ; operculo corneo, tenui, spirali, anfractibus plurimis, mar- 

 gin e fmbriato : long, ly^, lat. 2 poll. 

 Hab. in America Meridionali. (Island of Tumaco.) 

 The epidermis appears to be very deciduous, and is much thinner 

 on the lower parts of the shell than on the upper, its remains form- 

 ing a broad, dark, fuscous band just below the suture. — G. B. S. 



Cyclostoma succineum. Cycl. testa parvd, orbiculato-pyrami- 

 dali, Iccvi, succined; anfractibus quinque, rotundatis ; suturd 

 distinctd ; aperturd rotundatd, margine basali interna angulatd ; 

 peritremate tenui, acuto ; umbilico parvo, margine carinato : 

 long, -A, lat. -J-vpoll. 



Hab. in Polynesia. (Opara.) — G. B. S. 



Cyclostoma minutissimum. Cycl. testd globoso-pyramidaliy 

 fulvd, apice nigro ; anfractibus tribus rotundatis; suturd pro- 

 funda ; aperturd circulari; peritremate acuto ; umbilico nullo ; 

 operculo corneo. 



Hab. in Insula Pitcairni. 



This is the smallest species of the genus. 



Genus Fasciolaria. 



Fasciolaria granosa. Fasc. testd fusiformi, tuber culiferd, luteo- 

 albidd, transversim striata ; anfractibus suturam versus subangu- 

 latis, duobus ultimis prcecipue tuberculiferis, tuberculis magnis, 

 distantibus ; columella luted triplicatd ; aperturd transversim 



