4G;2 Lirmccan Society. 



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

 fractibus A\, convexiusculis, celeriter crescentibus, ad suturam hn- 

 pressam striatulis ; umbilico latiusculo, pervio ; aperturd parum 

 obliqud, circulari, intus albidd ; peristomate subduplice : interna 

 vix distinguendo , externa expanso, supernt in linguam brevem, 

 anfractui penuUimo adnatam, dilatalo. — Operculum} 

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

 Hab. ? 



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

 canicd, tenui, lineis spiralibus subtilissimis cunfertim sculptd, dia- 

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

 profundd ; anfractibus 4:\, convexis, ultimo basi distinctius sulcata; 

 aperturd obliqud, suhcirculari; peristomate simplice, expanso, maV' 

 ginibus approximatis, nonjunctis. — Operculum} '^ 



Diam. maj. 14. min. 11, alt. \\\ mill. 

 Hab. in Nova Hibernia. 



42. Cyclostoma fusculxjm, Pfr. C. testd angustissiine timbili- 

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

 lirdque periphericd validiore cariniformi sculptd, vix niliduld, 

 unicolorefusculd,fascid unicd angustd rufd infra carinam pallidam 

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

 interdum carind, secundo superne notato, basi minute spiraliter 

 sulcata; aperturd parum obliqud, rotundato-ovali ; peristomate 

 simplice, tenui, undique expansiusculo , marginibus approximatis, 

 non junctis. — Operculum testaceum, planum, cinereum, 4-spirum, 

 nucteo subcentrali, 



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

 Hab. ? 



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

 globoso-conicd, tenui, oblique striatuld et liris subacuiis multis 

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

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

 (Equalibus, pluribusque minoribus, confertioribus in umbilico mu- 

 nito ; aperturd parum obliqud, subcirculari ; peristomate simplice, 

 tenui, undique expansiusculo, marginibus approximatis, non junctis. 



: — Operculum testaceum, planum, paucispirum, 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 jirincipally derived, consisting 

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



