BIBLIOGRAPHY 19T 



as var. vemistula Reeve, of the same species. R. rugosa Sow., 

 and verrucosa Sow., are the same as criientata Sow. R. Thomcz 

 D'Orbigny, is identical with var. rJiodostovia Beck. R. Thersites 

 Redfield is the same as Califoniica Hinds. R. coriacea Reeve, 

 is a young state of scrobicidator L., R. gram'fera Lam., and 

 sejiiigranosa Lam. R. affiuis Bred., receives the following: — 

 R. livida, R. ponderosa and R. Cubaniana. R. rosea Reeve, R. 

 conci7ina 'DMn'ktx, R. poly cJi Ion/ s Tapp. Canef, are considered as 

 varieties of R. pusilla Brod. R. argus Gmelin, receives rajielii- 

 formis 'Kmg=^vexillu??i Sow., and R. proditor. 



The FusiD.E are next treated and are primarily divided into 

 Fusing, Fasciolariix.e, Ptychatractix.e and Peristekxiix.e. 



The subfamily Fusin.e embraces the genera Rusus Lam. 

 Afer Conrad, Clavella Swains., Buccinofusus Conrad. The 

 subfamily Fasciolariix.e has the genus Fasciolaria. The sub- 

 fossil Ptvchatractin^ embraces Ftychatraclus and Meren'a, and 

 Peristerniin.e has Reristernia, La tin/ s and Leucozonia. 



An enumeration and description of fossil genera and sub- 

 genera is also given. Nineteen plates enrich this part, illustrating 

 a number of species, and also showing the dentition of some of 

 the species. 



Mollusca of H.M.S. "Challenger" Expedition.— 



By Rev. Robert Boog Watson, B.A., F.R.S.E., F.L.S., F.G.S.— 

 Parts I and 2. 



The Rev. Mr. Watson, in whose able hands the vast collection 

 of mollusca (excepting Brachiopods, Cephalopods, Pteropods and 

 Nudibranchs) gathered in these extensive explorations were placed 

 for examination, has in this paper given us a first instalment of 

 the valuable and important results achieved. Up to the time 

 of publication of these parts, 2000 separate lots have been examined, 

 including from 1200 to 1500 distinct species. The richness of 



