niVALVE SIIELLS. 285 



32. PlSUM AUSTRALE. 



P. testa subcordata, tumida, inaequilaterali, transversira striato- 

 sulcata ; umbone j)rominente ; natibus oblique versis. 



Cyclas australis, Lamk. An. s. Vert. v. 5C0. no. 8. 



Hab. Nova Hollandia et insula Timor dicta. 



6, Species dubice. 



1. Pisidium Dhingolii, Bivona in A. Sf J. B. Villa, Disp. Syst. 



Conch. p. 44. 



Hab. Sicilia. 



2. Pisidium depressum, Pfeiffer in Shuttleworth, Diag. neuer 



Moll. no. 1. 1852, p. 12. 



Hab. Sicilia. 



3. Pisidium, Mallet, Mortillet Cat. 

 Hab. In rivulis Guayam affluentibus. 



4. Pisidium perpusillura, Gdrtner, Ann. der Wetterauischen, 



iii. 316. no. 3. 



Hab. In aquis dulcibus Honoviae. 



13 



