86 
form recently described by Hoek as I. sibogæ. I am unable, 
however, to regard the latter as more than a variety of Darwin's 
species, because an almost complete series linking the two forms 
occurs in a collection recently made by Capt. F. H. Stewart of 
the Indian Medical Service on a small island off the coast of Burma. 
The range of I. cumingi extends from the Persian Gulf to the 
Philippines. 
12,—5.—1910. 
