113 



''Blatta. 



(Cockroacli) Penplaneta orientalis. 



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

 uses: Internal, 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 -1 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. 



MAKCH 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, lUingworth, 

 Ivuhns, Osborn and Swezey. 



Minutes of previous meeting read and approved. 



EXTO^^rOLOGICAL PKOGKA:Nr. 



Dr. Illingworth reported on some observations made in a 

 poultry yard on the ant Pheidole megacephala, which in great 

 numbers were destroying the eggs of the hen flea, Xesfopsylla 

 (jallinacea. 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 glohosa. which he was at- 

 tempting to rear. 



Mr. Ehrhorn related some observations he made several years 

 ago on ]\Iolokai which indicated that ants were a large factor in 

 controlling ''ox warble", Hypoderma Uneata Villers. The work 

 of this fly is only occasionally observed on Molokai and the 

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

 tliej emerge and fall to the ground to pupate. 



