Note 361 — ON PARASITES IN GENERAL. (continued 12)

[Usually known as Hemiptera. There are two sub-orders, Heteroptera and Homoptera. The former have the base of the front wings coriaceous; the latter have all four wings membranous. The Homoptera are Aphides or plant lice and scale insects (Coccidæ), none of which attack man. Recently an interesting case has been reported to me where certain Aphides had been passed in human urine. One species was Rhopalosiphum dianthi, the other found in the urine was the hop aphis (Phorodon humuli). I cannot believe, however, that they had been actually passed, in spite of the case being reported by a medical man.—F. V. T.]