EXPLANATION OF PLATE XIV. 



Pigs. 1, 2, and 3. Dorsal, lateral, and ventral aspects respectively of 

 P. obturamentum. 



„ 4 and 5. Outlines of P. similis to contrast with figs. 1 and 3, copied 

 from figs. 12 and 14, pi. ciii.. Vol. ii., of The Thesaurus Con- 

 chyliorum. In the margin of that plate the figures are said 

 to be " f rda. nat. diam." 



[The figures have been reproduced from drawings by Mr. C. Hedley, 

 of the Australian Museum, by photo-lithography.] 



