EXPLANATION OF PLATES. 
All the figured specimens are preserved in the British Museum, 
their registered numbers being quoted in square brackets. The 
figures are drawn natural size, except in one or two cases where 
the enlargement is stated. With the exception of Pl. I. Figs. 
1 and 2, Pl. X. Fig. 3, and Pl. XI., all the specimens are 
from the Rufford Collection. 
