113 



'^Blatta. 



(Cockroac^i) Periplaneta orientalls. 



Constituents : Blattaric acid ; antihydropin ; fetid, fatty oil ; 

 uses: Iniemal, in dropsy, Bright's disease, whooping-cough, 

 etc. — External, as oily decoction for warts, ulcers, boils, etc. 

 Doses: 10-15 grains in dropsy, as powder, or pills; or 4 fluid 

 drams decoction." 



I have noticed that our wingless, shiny species (Polyzoste- 

 ria soror Brunn.) emits a distinct pungent odor when disturbed, 

 which closely resembles that of the common Pentatomid bugs — 

 the odor that we have often noticed on berries in the States 

 when these bugs have sucked them. Very likely these roaches, 

 also, have medicinal properties which may be of value when 

 they are properly investigated. 



MARCH 4th, 1915. 



The one hundred-fifteenth regular meeting of the Society 

 was held in the usual place. President Ehrhorn in the chair. 

 Other members present: Messrs. Fullaway, Illingworth, 

 Kuhns, Osborn and Swezey. 



Minutes of previous meeting read and approved. 



EXTOMOT.OGICAL PKOGBAM. 



m a 



Dr. Illingworth reported on some observations made 

 poultry yard on the ant Pheidole megacephala, which in great 

 numbers were destroying the eggs of the hen flea, Xestopsylla 

 gallinacea. They were also getting the flea larvae and an occa- 

 sional adult; in several instances they were observed picking 

 fleas which had been killed by creosote from the combs of the 

 hens. He also mentioned the destruction by ants of the larvae 

 of the monkeypod borer, Xystrocera gJobosa, which he w^as at- 

 tempting to rear. 



Mr. Ehrhorn related some observations he made several years 

 ago on Molokai which indicated that ants were a large factor in 

 controlling "ox warble", Hypoderma lineata Villers. The work 

 of this fly is only occasionally observed on ^NFolokai and the 

 large numbers of ants on the cattle ranges destroy the larvae as 

 they emerge and fall to the ground to pupate. 



