46^ Linnaan Sucwly. 



bus guttatd ; spird vix elevatd, apice fused, submucronatd ; an- 

 fractibus A\, convexinsculis, celeriter crescentibus, ad suturam im- 

 pressam striatulis ; umbilico latiusculo, pervio ; aperturd parum 

 obliqud, circulari, intus albidd ; peristomate subdiiplice : interno 

 vix distinguendo, externa expanso, superne in linguam brevem, 

 anfractui penultimo adnatam, dilutcUo.- — Operculum} 



Diam. maj. 19, min. 15, alt. 9 mill. 



Hab. ? 



41. Cyclostoma ignescens, Pfr. C testd perforatd, globoso- 

 coiiicd, tenui, lineis spiralibus subtilissimis confertim sculptd, dia- 

 phand, nitidd, ignescente ; spird turbinatd, obtusiusculd ; suturd 

 profundd ; anfractibus A\, convexis, ultimo basi distinct ius sulcata; 

 aperturd obliqud, subcirculari ; peristomate simplice, expanso, mar- 

 ginibus approximatis , nonjunctis. — Operculum} 



Diam. maj. 14, miu. 11, alt. llymill. 

 Hab. in NovA, Hiberaia. 



42. Cyclostoma fusculum, Pfr. C testd angustissime umbili- 

 catd, globoso-conicd, tenui, lineis elevatis spiralibus subconfertis , 

 lirdque peripkericd validiore cariniformi sculptd, vix nitiduld, 

 unicolorefusculd,fascid unicd angustd rufd infra carinam pallidam 

 ornatd ; spird conicd, obtusiusculd ; anfractibus 5, convexis, ultima 

 interduyn carind, secunda superne notato, basi minute spiraliter 

 sulcata; aperturd jyarum obliqud, rotundato-ovali ; peristomate 

 simplice, tenui, undique expansiusculo, marginibus approximatis, 

 nonjunctis. — Operculum testaceum, planum, cinereum, 4-spirum, 

 nucleo subcentrali 



Diam. maj. 11^, min. ^\, alt. 9 mill. 

 Hab. ? 



43. Cyclostoma castanetjm, Pfr. C. testd anguste umbilicatd, 

 globoso-conicd, tenui, oblique striatuld et liris subacutis inultis 

 sculptd, nitidd, saturate castaned ; spird elevato-conicd, apice ob- 

 tusiusculd ; anfractibus 4|-, angulato-convexis, ultimo liris 6 sub- 

 aqualibus, pluribusque minoribus, coifertioribus in umbilico mu- 

 nita ; aperturd parum obliqud, subcirculari ; peristomate simplice, 

 tenui, undique expansiusculo, marginibus approximatis, non junctis . 

 — Operculum testaceum, planum, paucispirvm, nucleo subcentrali. 



Diam. maj. 11, min. 9, alt. 9 mill. 

 Hab. in insula Madagascar. 



LINN^AN SOCIETY. 



May 3, 1853. — R. Brown, Esq., President, in the Chair. 



Read, a memoir " On the Vegetation of Buenos Ayres and the 

 neighbouring districts." By Charles James Fox Bunbury, Esq., 

 F.R.S., F.L.S., &c. 



Mr. Bunbury commences his memoir by an indication of the 

 sources from which his notes are principally derived, consisting 

 chiefly of very extensive collections made by the late Mr. Fox (for- 



