362 ON MOLLUSCA FROM ISLEWORTH, MIDDLESEX. [Apr. 19, 



tt lineis abdominalibus distiuctis, cariniformibu8. 



Anadastus, n. gen. 

 (type L. cam!jodicB, Crotch), 

 ttt lineis abdominalibus impressis divai-icatis. Stenodasfus, n. gen. 



(type L. melanostcrna). 

 d. Elytrorum apicibns mucrunatis. 



(t lineis abdominalibus nuUis) Sfenolavffuria, Fowler 



(type S. tricolor, Fowler). 



forcipatis MeristoJielus, n. gen. 



(type M.forcipatus, Gorh.). 



acnminatis Acropteroxys, n. gen. 



(type Languria gracilis, Newman). 

 ii. Oculi grosse granulati. 



a. Tarsi, prresertim antici maris, valde liirtuli ; 



liueis abdominalibus brevibus Crotchia, Fowler 



(type C. vagahtinda. Fowler). 



b. Tarsi vix hirtuli ; 



lineis abdominalibus nullis Barbaropus, n. gen. 



(type Languria ngassa, Fowler). 



lineis abdominalibus brevibus Microlang2<ria, Lewis 



(type Languria jansoni, Crotcb). 

 iii. Oculi fortiter granulati; 



lineis abdominalibus impressis, extus elevatis brevibus. 



Cladoxena, Mots. 



April 19, 18S7. 

 Osbert Salvin, F.R.S., Vice-President, in the Chair. 



The Secretary called attention to a set of eleven photographs 

 containing representations of the principal objects of Natural History 

 collected by the celebrated traveller Prejevalski during his recent 

 expedition in Central Asia and an accompanying Catalogue, which 

 had been presented to the Society's Library by Dr. A. Strauch, 

 F.M.Z.S., and read some extracts from a letter addressed to him by 

 Dr. A. Strauch on the subject. 



Dr. Strauch stated that after Prejevalski had returned from his 

 fourth journey, and had again given his valuable collection of 

 Yertebrates to the Imperial Academy of Petersburg, it was de- 

 termined by the Academy to have a special exhibition of all 

 the zoological collections of Prejevalski in the new wing of the 

 Academy buildings. The collection thus arranged contained speci- 

 mens of 702 Mammals, 5010 Birds, 1199 Reptiles and Amphibians, 

 and 643 Fishes, besides some Ethnological objects. The photographs 

 now exhibited represented these objects as arranged for exhibition 

 in the building of the Academy. 



The catalogue, which was in Russian, contained the scientific 

 names of the principal species so far as they had been determined. 



Mr. T. D. A. Cockerell exhibited specimens of some Mollusca 

 taken at Isleworth, Middlesex, and read the following notes : — ■ 

 Arion bourguignati, Mabille. — This species, though differing 



