Apeil 23. Price 3s. 



THE JOURNAL 



OF 



THE LINNEAN SOCIETY. 



Vol. XIV. ZOOLOGY. No. 78. 



;?^ 



CONTENTS. V- csJ^^ 



I. MOLLUSCA or THE ' ChALLENGEE, ' ExPEDMKHf. '^Q'/ 



I. Preliminary Keport to Prof. Sir C^^^^V4£i6^n .' 

 Thomson, P.R.S., Director of the Civilian ^iBBr-""'''^ 

 tific Staff, on the Mollusca dredged during the Ex- 

 ploring Voyage. By the Eev. Eobert Boog 

 WATsoif, B.A., P.E.S.E., E.L.S.,E.a.S 506 



II. The SoLENOcoKCHiA, Comprising the G-eneraDew- 

 talium, SipJiodenfalium, and Cadulus. By the Eev. 



E. BooG Watson, B.A., P.L.S., &c 508 



II. Descriptions of new Coleoptera of Greographical In- 

 terest, collected by Charles Darwin, Esq. By Eee- 

 DERiCK H. AVateehouse, Librarian to the Zoological 

 Society of Loudon. (Communicated by Dr. J. Mueie, 

 P.L.S;) 530 



III, Greographical Distribution of Indian Ereshwater 

 Eishes. — Part III. Conclusion. By Eeancis Day, 

 Esq., E.L.S. &c 534 



IV. Description of two new Shells. By Stlyanus Han- 

 let, E.L.S 580 



V. On the Eelations of RTiahdopleura. By Prof. Gr. J. 

 Allman, M.D., LL.D., E.E.S., President. (With a 

 woodcut.) 581 



YI. Mollusca of the ' Challenges ' Expedition. 



III. TROCHiDiE, viz, the Grenera SegueMzia, Basilissa, 

 Gaza, and Bemhix. By the Eev. E. BooG Watson, 

 B.A., E.L.S,, &c 586 



VII. Note as to the position of the Grenus Seguenzia among 

 the Gastropoda. By J. GwTN Jefeeeys, LL.D., 

 E.E.S., E.L.S 605 



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