41 



March 24, 1835. 



William Yarrell, Esq., in the Chair. 



A Letter was read, addressed to the Secretary by ■W. Willshire, 

 Esq., Corr. Memb. Z. S., dated Mogadore, February 19, 1835, and 

 refemng to the skin of an Aoudad, Ovis Tragelaphus, Geoff., pre- 

 sented by the writer to the Society, and also adverting to his en- 

 deavours to obtain the animal which, from the description of it given 

 by the Arabs of the Desert, Mr. "VVillshire conceives mušt be the 

 Antilope Leucoryx described by Pennant. 



The exhibition vias resumed of the new species of SJiells contained 

 in Mr. Cuming's collection. Those brought on the present evening 

 under the notice of the Society, completed the genera Venus and Cy- 

 therea, which had been commenced at the Meeting on February 24, 

 (page 21). The Shells now exhibited were accompanied by cha- 

 racters by Mr. Broderip and Mr. G. B. Sovverby. 



Genus Venus. 



Venus tricolor. Ven. testu ovato-ellipticd, crassiusculd, radiatim 

 costellatd, costellis decussatis ; maculis interruptis fuscis, irregu- 

 laribus, radiatim dispositis ; margine dorsali medio subangulato ; 

 impressione cordiformi anticd parvd ; intiis violaced, margine ven- 

 trali denticulato : long. 1-7, lat. 0-75, alt. IS poli. 



Hab. ad oras Americae Centralis. (Puerto Portrero.) 



Found in sandy mud at from eleven to thirteen fathoms. — G. B. S. 



Venus histrionica. Ven. testd obovatd, pallide fulvd, radiatim 

 costellatd, costellis plerumque duplicatis, concinne decussatis, 

 asperis ; maculis interruptis fuscis irregularibus radiatim pieta ; 

 margine dorsali rectiusculo, postice subangulato ; impressione cor- 

 diformi anticd magnd ; intus albicante, margine ventrali denticu- 

 lato .- long. 1-8, lat. T, alt. 1-4 poli. 



Hab. apud Real Liejos, Americse Centralis, et ad Sanctam Elenam. 



Found in muddy sand at low water. — G. B. S. 



Venus fusco-lineata. Ven. testd obovatd, albicante, radiatim cos- 

 tellatd, costellis antice subdecussatis ; lineis undatis, subobliąuis, 

 radiisąue duobus fuscis nonnunguam pictd ; margine dorsali rec- 

 tiusculo, posticl subangulato ; latere antico brevi, impressione cor- 

 diformi anticd parvd ; intūs purpurascente, margine ventrali den- 

 ticulato : long. rS, lat. 0'8, alt. 1-2 poli. 

 Hab. ad oras Americse Centralis. (Guacomayo.) 

 Found in sandy mud at a depth of thirteen fathoms. — G. B. S. 



Venus Chilensis. Ven. testd obovatd, pallidd, radiatim costellatd. 

 costellis {medianis prcecipui) planulatis, {anticis posticisgue prts- 

 cipue) decussatis ; maculis, lituris, strigilisque pallide fuscis or- 

 natd ; margine dorsali rectiusculo, subdeclivi, postice subangulato ; 

 latere antico breviore, impressione cordiformi parvd ; intiis albi- 

 cante, margine ventrali denticulato: long. 2-8, lut. lo, alt. 24 

 poli. 



