igiS.] 



H. H. Godwin-Austen: MoUusca, IX. 



621 



ledge of it as to make such investigation a task of intense interest. 

 I have a map in preparation, for it is impossible without one to 

 show all the subject brings with it. 



[In reference to the note on page 600 of this volume the opportunity is taken 

 to reproduce here the figures of Be>isonia aborevsis and Raliula koboensis des- 

 cribed in the previous instalment (pp. 596 and 599J of Col. Godwin-Austen's ac- 

 count of the Abor Molluscs. — Ed.^ 



Fig. I. — liensonia ^ aboreusis, n. sp., nat.-size (p. 596). 

 (From photograph by Mr. J. Green). 



B 



^^ ^ 



Fig. 3. — Raliula koboensis, n. sp. (p. 499). 



A. Part of shell of animal dissected, x 12. 



B. Portion of radula, X iioo ; jaw, X 58. 



C. The visceral sac, X 9. 



