388 ON MENKB'S AUSTRALIAN' shells, 



Taking example from the Eev. J. E. Tenison-Woods in his 

 reproduction of the descriptions of Gould's Australian Shells, 

 Proc. Linn. Soc, N.S.W., Vol. II., p. 250, 1877.) and acting on 

 his suggestion implied in the above introductory citation, I offer 

 in the following pages a reprint of Menke's diagnoses of the 

 sixty marine shells, which bear his name. The land forms 

 described by Menke have already been dealt with by Dr. Cox in 

 his "Monograph of the Australian Land Shells." 



Menke's species have, for the most part, been overlooked 

 by monographers, especially does Reeve seem to have been 

 unaccpaainted Avith them ; and it is, therefore, the more desirable, 

 that the original diagnoses of them should be readily accessible 

 to Australian conchologists. 



The following are the only species stated to have been collected 

 on the eastern coast of Australia, and of these, excepting the 

 last two, no reference is made to them by any other writer on 

 Australian Shells, at least so far as I am aware : — Neritina 

 Listen', Pfr. (probably an erroneous identification), Pltasianella 

 Lehmanni, Mke., P. Preissii, Mke., P. perdix, Gray, P. rubens, 

 Lam., P. brevis, Mke., Crassatella Kingicoh, Lam., and Pectunculus 

 radians, Lam. 



The fauna made known by the researches of Dr. Menke is 

 essentially Indian, and shows conclusively that the tropical forms 

 of molluscan life prevail as far south as Swan River. It 

 contrasts very strongly with that of King George's Sound, as 

 made known by Quoy and Gaimard, which possesses a truly 

 Australian facies, such as characterizes the whole length of the 

 southern shore of the Continent and around Tasmania. 



Cassidula euqata, No. 15, p. 7. 



Testa ovato-elliptica, solida, transversum striata, anfract ibus septem ; 

 ultimo supra longitudinaliter plicalo-rugoso, ccesio, infra spiraaue brevi 



