125 



In very old or weathered specimetis the transparency and colour 

 are lošt, and tlie shell has a more dense appearance. Some old spe- 

 cimens have a curved longitudinal external streak of chestnut rising 

 from the umhilicus, and terminating near the base of the aperture at 

 the lower edge of the inner lip. Found on bushes. — W. J. B, 

 BuLiNUS Nux. Bul. testd pyramidali, fuscd ; unfractibus 7 longi- 



tudinaliter rugosis ; umhilico mediocri : long. !■§-, lat. -^^ poli. 

 Hab. ad Insulas Gallapagos. (Charles's Island.) 

 Found on bushes. — W. J. B. 



Genus Partula. 

 Partula rosea. Part. testd ovato-pyramidali, rosed; anfractibus 

 6 longitudinaliter substriatis, lineis creberrimis sub-decussatis, ul- 

 timo malimo ; epidermide tenui : long. i, lat. Ąrpoll. 

 Var. a. purpureo-fusca. 

 VoT. (3. albida suturis et anfractūs ultimi basi roseis ; epidermide 



flava. 

 Hab. in insula Huaheine, 

 Found by Mr. Cuming on the Te plant.— W. J. B, 



Partula aūriculata. Part. testd perforatd, ovato-pyramidali, 

 castaned ; anfractibus 6 subventricosis, longitudinaliter striatis į 

 aperturd albd, guasi auriculatd, labiis complanatis crassis ; dente 

 in anfractds basalis faciem internam albo : long. i, lat. ^ poli. 

 Var. flavicans aperturse margine externo subroseo. 

 Hab. in Huaheine. 



The thick flattened lips forming the aperture of this species are so 

 disposed as to give the mouth, in many individuals, the appearance 

 of a key-hole, while in others it is ear-shaped. The white tooth on 

 the internal surface of the body whorl is not developed in some spe- 

 cimens. Found on bushes at Huaheine. — W. J. B. 



Partula varia. Part. testd ovato-pyramidali, subglabrd, levissime 

 longitudinaliter substriatd, subdiaphand, fuscd, fuscd subviridi- 

 fasciatd, vel anfractibus superioribus fuscis, ultimo fiavente : 

 long. i^, lat. ^'■^ poli. 

 Hab. in insula Huaheine. 



This pretty species, of vvhich hardly two individuals are exactly 

 sirailar in colour, was found upon bushes.— W. J. B. 

 Genus Planorbis. 

 Planorbis Peruvianus. Plan. testd discoided, pellucidd,utrinque 

 concavd, anfractds basalis parte ultimd subdepressd ; aperturd 

 subgibbd,subdilatatd: lat. ^, long. ^\ poli. 

 Hab. in Peruvia. (Malabriga, province of Truxillo.) 

 Found in a muddy pond nearly dried up.— W. J. B. 



Genus Purpura. 

 Purpura muricata. Purp. testd ovato-globosd, transversim guadri- 

 carinatd, carinis tuberculiferis imbricatis ; subalbidd lineis palbdi 

 griseo-rufis cinctd i columelld flavescenti-carned į labro crenulato. 



