On the Anatomy of certain Forms of Australian Entomostraca, 

 hj the Rev. R. L. King, B.A. 



[ Read 5th September, 1864.] 



In my researches in 1850-5, among the Fluviatile Entomostraca 

 in the neighbom-hood of Sydney, I was fortunate in meeting 

 with several new species, a detailed description of which appeared 

 in the Papers and Proceedings of the Royal Society of Van 

 Diemen's Land. In Vol, III., Part I., ]855, a list and brief 

 description of 43 species was given, all but two of which (Lejn- 

 duTus viridis Baird, and Baphnia mucronata Muller) were, as far 

 as I am aware, new to science. 



I propose in the present paper to refer to the anatomy of 

 these species, accompanying the description with figures, and 

 selecting those of which the anatomy is either unknown, or appears 

 to differ from the description already given of similar species in 

 other places. 



LiMNETIS MacLeATANA. (PI. XI,) 



The Fluviatile Phyllopoda of Australia, as far as at present 

 known, for I am not aware that any additions have been made 

 since 1855, include the genera Lejndurus, Limnadia and Limnetis. 

 The lovely genus CMrocepJialus has not as yet a place in our 

 Australian Fauna. In addition to the above we have the very 

 beautiful Artemia proxima (niihij in the Salt Pans at Newington. 

 The Marine Phyllopoda have yet to be worked out. 



The genus Llmneiis was first described by Loven, from a 

 South African species, by the name of L. Wahlbergii. The fol- 

 lowing is M. Loven's description of the genus : — 



Limnetis. Loven. 



Limnadise et Cyzico affine, antennis bi-articulatis, cauda trun- 

 cata, appendicibus mobilibus facie inferiore destituta. 

 The following comparison of the three genera of Limnadiadoe 

 will at once point out the distinctness of this genus from the 

 other two which have long been known and minutely described. 



