January 28, 1834. 

 VVilliam Yarrell, Esq., in the Chair. 



A preparation was exhibited of the stomach of Semnopithecus 

 Maurus, F. Cuv., presented to the Society by G. H. Garnett, Esq. 

 It was brought under the nocice of the Meeting for the purpose of 

 shovving that there exists in that Monkey the extremely elongated 

 and sacculated form of the visais, which was first described by 

 M. Otto, as occurring in Semn. leucoprymnus, and vvhich was subse- 

 ąuently exhibited by Mr. 0\ven, at the Meeting of June U, 1833, 

 (Proceedings, Part. I. p. 74-.) as obtaining also in the only two spe- 

 cies of the genus vvliich he had then examined, the Semn. Entel- 

 lus, F. Cuv., and the Semn.J'uscicularis, Raffl., — a structure which 

 he aftervvards described and figured in the 'Transactions' (vo!. i. 

 p. 65, pli. 9 and 10). Mr. Owen's impression that this remark- 

 able modification of the stomach is a generic peculiarity, receives 

 confirmation from its occurrence in the first previously unexamined 

 species which has been dissected within the Society's reach since 

 the publication of his remarks. 



An extensive series of Eulimce, chiefly from the collection of 

 Mr. Cuming, was exhibited, and the fol'lovving account by Mr. 

 G. B. Sovverby of the genus and of the characters of the several 

 species was read. 



Genus Eulima, Risso. 



Testą turrita, acuminata, polita, anfractibus plurimis j apertura 

 ovatfl, postice acuminata ; labio externo subincrassato, varices ob- 

 soletos freąuentes, subsecundos, plerumque efformante : operculo 

 corneo, tenui, nucleo antico. 



This genus of marine Shells appears to be most nearly related to 

 Pųramidella and Rissoa. A species vvhich has been long knovvn 

 has had the appellation of Turbo politus among British Linnean 

 vvriters; and a fossil species has been placed by Lamarck among 

 the Balini, under the specific name of Bul. terehellatus. There 

 are two dislinctly marked divisions of the genus, which are cha- 

 racterized by the two species above mentioned ; one has a solid 

 columella, and the other is deeply umbilicated. Ali the species are 

 remarkable for a brilliant polish externally, and the shells are fre- 

 quently slightly and somewhat irregularly twisted, apparently in 

 consequence of the very obsolete varices following each other in an 

 irregular line, principally on one side, from the apex toward the 

 aperture. Severai recent specie.s are British, and the fossil species 

 are found in the calcaire grossier near Paris. 

 * Perforatae. 



EūLiMA SPLENDIDULA. Eul. tcstd acuminato-pĮ/ramidali, brun- 

 nescente, prope suturas albo castaneoqtie artiatlatd ; umbilico mag- 

 no; apertura antice angulaid : long. l*4-5, tat. 0-6 poli. 



Conch. Illustr., f. 7. 



Hab. ad Sanctam Elenam Amcricae Meridionalis. 



