divide tlie length thus : anterior side 3 mil., post. 6| mil.) 

 Depth 4 mil., thickness of both valves 1| mil. Teeth, post. 

 22, anterior 11. 



This interesting shell is very distinct from any known 

 species. It ap2:)roaches the Patagonian Leda (L. Patagonica 

 D'Orb.) in form, but it is much smaller and is sculptured 

 differently. 



Hab., off Three Hut Point, D'Entrecasteaux Channel, 10 

 fathoms. 



I dedicate this species to His Excellency Lieut.-General 

 Sir John Henry Lefroy, K.C.M.G., who has always taken an 

 active interest in matters appertaining to natural history. 



SUGGESTIONS FOR AN EXTENDED ELUCIDATION 



OE THE PLANTS OF TASMANIA. 

 By Baeon Ferd. Von Mueller, K.C.M.G., M.D., F.R.S. 



\_Read lOth May, 1881.] 



The rich and beautiful vegetation of Tasmania has bad 

 bestowed on its specialinvestigation the talentof a leading phy- 

 tographer of this age, Sir Joseph Hooker ; and no other island 

 of the same dimension can boast of the possession of two such 

 superb volumes on its vegetation as the Flora Tasmanica, 

 issued at the expense of the Admiralty with some support of 

 the Local Government. The di- and mono- cotyledonous 

 plants became thus mainly, though not exhaustively enu- 

 merated ; very many also of the Acotyledonea3, by the aid 

 of Messrs. W. Wilson, M. Mitten, M. J. Berkeley, W. H. 

 Harvev, and C. Babington, became largely recorded, so much 

 so that in 1860, when the secondvolume of the Flora Tasmanica 

 appeared, already over one thousand well-defined Cryptogams, 

 exclusive of ferns, became recorded ; thus, to Tasmania belongs 

 the honour of having laid the foundation to the whole cryp- 

 togamic botany of Australia, a great majority of the Tas- 

 manian species (as shown by subsequent and even previous 

 researches) occurring in continental Australia also. Neverthe- 

 less our knowledge of the Acotyledonese of the Tasmanian 

 colonv must not by any means be regarded as complete ; 

 indeed, these lower vegetable organisms have there almost 

 solely been collected by Messrs. Gunn and Archer, with a 

 zeal beyond praise, through which their names will also in 

 this department of science be for ever identified with the 

 land of their adoption. Many regions within the Tasmanian 

 dominion were not accessible to either of these investigators, 

 and it is very likely that numerous species of Acotyledoneae 



