(. mew |) 
those of the Callostoma. ‘Those which buried themselves in the ground 
are small and cylindrically oval in shape. May not this body-parasite be 
the cause of the sickly state and disappearance of the locust? If so it 
is a most valuable auxiliary to the Callostoma in destroying the locusts. 
Numbers of these flies [the Callostoma] were observed in the streets of 
this town on the 30th of June. I have not remarked that they hum in 
their flight.” 
“Thymbra, Plains of Troy, July 31, 1881. 
“The pupa of the parasite larva found in the body of the locust has 
now changed to the perfect insect. It is a fly which appears to me to 
resemble the blow-fly, though much smaller. I have been on the hills 
to-day to search for this fly, which I think I have found. Of the Callostoma 
I did not meet with a single specimen. ‘The same of the locust. So 
completely has the locust disappeared I can find no egg-pods to experiment 
with, nor are there any within twenty miles of this place or of the Dar- 
danelles. The body-parasite has destroyed the locusts that escaped the 
Callostoma over 800 square miles. 
“T regret not to have observed the Callostoma deposit its egg. ‘The fly 
basked in the sun, and, when disturbed, flew a few yards and settled in a 
determined way. In confinement it is always trying to effect its escape 
and dies in a day or two.” 
“ Dardanelles, August 4, 1881. 
“T have now come to town, and on opening the box I had carefully 
closed containing the pupe of the locust body-parasite, I found some more 
flies (mentioned in my last) hatched. I send by post specimens of these 
flies (D). Also of those found on the hills (r) to compare with p. 
*T am informed that twenty-five miles north of this town locusts have 
deposited their eggs over a space of country fifteen miles by thirty-five. It 
is here that the Callostoma larve will have to be searched for, if any are 
required. As to the propagation of the body-parasite, the plan to be adopted, 
T think, would be to collect the sickly infested locusts and introduce them 
amongst those that are free of the parasite.” 
The President read a letter from the Colonial Office acknowledging the 
receipt of the report on the insect attacking locust-eggs in the Troad, and 
requesting that ‘‘ Lord Kimberley’s thanks be conveyed to the Society for 
this valuable report.” 
Papers read. 
Mr. C. O. Waterhouse read the “ Descriptions of some new Coleoptera 
from Sumatra.” <Anomala (Spilota?) Curtisii (Rutelide), Macronota anceps 
(Cetoniide), and Eutrachelus sumatrensis (Brenthide), and exhibited speci- 
mens; also a specimen of Clerota brahma, Gestro, from Sumatra. 
Mr. J. S. Baly communicated the “ Descriptions of uncharacterized 
species of Humolpida, with notices of some previously described insects 
