EXPLANATION OP PLATE XIV. 
Figs. 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., Yol. ii., of The Thesaurus Con- 
chyliorum. In the margin of that plate the figures are said 
to be u frds. nat. diam.” 
[The figures have been reproduced from drawings by Mr. C. Hedley, 
of the Australian Museum, by photo -lithography.] 
