On new Fre.^JiW'iler She^is Jruin Japan. 159 



Daunus tasmanicp. 



Criifrolus t(i8 luinue, Fairm. Ann. Soc. Enf. Fr. (i') iv. p. 51;', pi. iii. 



tifr. l.'MltiW). 

 Datoias tuftiinnice, Coding' (part.), Pror. Liiiu. Soc. N.S.W. xxviii. 



p. ;u (i!»u.'}i. 



Ccntruchoulcs twinanue, Buckt. Monogr. Membrac. p. 227, pi. 1. fig. 

 (1903). 



Hab, Tasmania, Australia. 



Daunus vitta. 



Centrotus vitta, Walk. List Horn, ii, p. 620 (18.')1), 



O.iijrhachii cotitmta, Walk. Ins. Saund., Ilnna. p. 06 (18o8). 



i'eiUrotus tncucaticornis, Walk. luc. tit. p. 81. 



Daunus tasmatiiee, Goding (part.), Proc. Linn. Soc. N.S.W. xxviii. 



p. 31 (l'J03). 

 Daunus vitta, Goding, he. cit. p. 02 (1903). 



Hab. Tasmania, Australia. 



Daunus contractus. 



Centrotus contractu^!, Walk. List Hom. ii. p. 622 (1851). 

 Dauiin.s tatmania, Godiutr (part.), Proc. Linn. Soc. N.S.W. xxviii. 

 p. 31 (1903). 



Hab. Australia. 



X. — JJtacrijjtions of new Freshicater Shells Jrom Japan. 



By H. B. Preston, F.Z.S. 



[Plate IX.] 



The shells described in the present paper were collected 

 recently by Dr. X. Aiinandale during his dredging-o})eratioiis 

 in Lake Biwa. Though the collection includes only some 

 seven species, a curiously varied Molluscan fauna is revealed, 

 including as it does the Pala?arctic Pisidium casertaninn, a 

 species whicli ranges over Xorthern Europe and Siberia, and 

 the genus Choanomplialus, which has hitherto been supposed 

 to be confined to North-eastern Siberia, together with a small 

 shell which the author has been unable to generically separate 

 from Lithods, which has, up to the present time, only been 

 recorded from Central India. 



It is greatly to be hoped that further investigations may 

 be carried out in the lake, when, doubtless, further interesting 

 material will be brought to light. 



