INTRODUCTORY NOTE 
T he great majority of the specimens on which Dr. Sharp comments in 
the present paper, were obtained during a few days in October, 1901, 
at Biserat. On other occasions single specimens, or, more often, a 
male and a female together, were brought us by natives, who said that they 
had found them on elephant dung. The cause of their abundance at Biserat, 
during the few days mentioned, appeared to be that a large train of elephants, 
in whose droppings they were taken, had just come to the village. 
I was not quite right in stating in a former paper^ that only the male 
of Heliocopris mouhotus can stridulate, for 1 find that the female is also able to 
emit a sound, though less readily. The bat-like squeak appears to be 
produced by the action of the legs in their sockets — I think only the inter- 
mediate pair — and can be brought about in specimens lately killed by moving 
the legs and at the same time pressing them in towards their base. 
NELSON ANNANDALE 
. P.Z.S.y 1900, p. 862. 
