76 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



the pelecypod nature of the shell. The hinge was also shown to 

 contain " valid anterior teeth ". 



By the kindness of Mr. Ph. Dautzenberg I enjoyed an opportunity 

 of examining cotypes of L. squamula in his collection. Not having 

 specimens of Edenttellina at hand for comparison I had to rely on 

 memory, but my recollection is that Ludovicia and Edenttellina 

 are co-generic. 



The situations in which dead shells have been found indicate 

 that the species lives in shallow water a little below the level of 

 low tide. The soft parts have not yet been seen by any zoologist. 

 On a study of the animal will depend a final judgment of the 

 taxonomic position of the genus. 



So far as I am aware, it has not been noticed that Jidia exquisita 

 carries on the umbo of the right valve, but not on the left, a spiral 

 horn, like, though far smaller, that of Edenttellina. In hinge structure 

 and general features there is also a general correspondence. On the 

 strength of these resemblances I would refer Edenttellina to the family 

 Juliidae (— Prasinidse of Fischer's " Manuel "). 



The inequality of the valves, the spiral prodissoconch sometimes 

 on the right, sometimes on the left, but unmatched in the opposite 

 valve, and the massive cardinal suggests to me some relationship 

 with the Chamacea. 



The two recent Australian species of this genus are as follows :— 



Edenttellina typica, Gatlifi & Gabriel. (Figs. 1-5.) 



Edenttellina typica, Gatlifi & Gabriel, Proc. Roy. Soc. Vict., xxiv, 



1911, p. 190, pi. xlvi, figs. 5-6 ; id. Verco, Trans. Roy. Soc. 



S. Australia, xxxvi, 1911, p. 328, and xl, 1916, p. 596 ; id. 



Hedley, Rec. Austr. Museum, viii, 1912, p. 134. 



Hah. — Portsea (type). Point Nepean, and Shoreham, Victoria 



(Gatliff & Gabriel) ; Guichen Bay, South Australia (Verco) ; King 



George Sound, Western Australia (Prof. Dakin). 



From South Australian specimens, 5 mm. in diameter, collected 

 in 1916 at Robe, Guichen Bay, and kindly lent to me by Sir Joseph 

 Verco, I now figure (1) the spiral umbo of the right valve seen from 

 without, (2) the same from within and the anterior cardinal tooth, 

 (3) outline of the right valve, (4) hinge, and (5) outline of the left 

 valve. 



Edenttellina corallensis, sp. nov. (Figs. 6-8.) 



Compared with the preceding species, this has the valve more 

 solid, more compressed, and more pointed anteriorly. The colour 

 is pale sulphur yellow. Length 5, height 3, depth of single valve 

 1'3 mm. 



Hah. — Coral mud, in 5 to 10 fathoms ofi the Hope Islands, 

 North Queensland, where I dredged several separate valves in 

 August, 1906. 



