25 



•of the ticks become implanted in the subcutaneous tissue, the puncture 

 leads to oedema and the oedematous tissue rises and gradually envelops 

 them, large ticks like Ambhjomma hebraeum and A. variegatum being 

 often found only partly embedded. There are no records of this 

 occurring in Ixodidae with short hypostomes, 



MuREAY (C. H.). Notes on tbe Anatomy of the Bed Bug {AcantJiia 



lectularia, L.). — Parasitology, London, vii, no. 3, October 1914, 



pp. 278-321, 2 pis., 40 figs. 



This is a detailed account of the general anatomy and the circulatory, 



respiratory, nervous and reproductive systems of Cimex lectularius, 



which is said to have a marked sense of smell, probably due to the 



possession of a peculiar sense-organ. 



Whitney (C. P.). Descriptions of Four New Tabanidae, with remarks 



upon Chrysops cursim. — Canadian Entomologist, London, Ont., 



xlvi, no. 10, October 1914, pp. 343-346. 



Four new Tabanidae, all from Florida, are described, viz. : — 



Tabanus birdiei, T. milleri, T. beatificus, and Chrysops ultimus. In 



the recently published " Insects of Florida," by Prof. C. W. Johnson, 



two specimens of T. birdiei, captured in 1912, are recorded as 



cymatophorus, O.S., from which they are now treated as distinct. The 



differences between C. cursim and C. pudicus, O.S., considered by 



Williston to be synonymous, are also noted. 



The Duck as a Preventer of Malaria and Yellow Fever. — Lancet, London, 

 clxxxvii, no. 4758, 7th November 1914, p. 1102. 

 Dr. S. G. Dixon, Commissioner of Health of the Commonwealth 

 of Pennsylvania, has recently pointed out that the duck is one of the 

 greatest enemies of the mosquito, and therefore can play an important 

 part in the prevention of malaria and yellow fever [see this Review, 

 Ser. B, ii, p. 10.] Two dams were built near one another on a stream, 

 so that they gave exactly similar breeding grounds for mosquitos. 

 In one 20 mallard ducks were allowed to breed ; the other was pro- 

 tected from water -fowl, but well stocked with goldfish. The former 

 remained for several months entirely free from mosquitos, which 

 swarmed in the other. Mallard ducks were then admitted to the 

 latter and no pupae could be found after 24 hours, and only a few 

 small larvae after 48 hours. It is claimed that the duck surpasses all 

 other creatures in its capacity for devouring large numbers of the 

 larvae and pupae of mosquitos. 



Converse (G. M.). The Sanitation of Iquitos, Peru. — Public Health 

 Reports, Washington, B.C., xxix, no. 46, 13th November 1914, 

 pp. 3030-3040, 2 plates. 



Iquitos, a Peruvian port for ocean-going vessels, 2,300 miles from 

 the mouth of the Amazon river, has an average annual temperature of 

 about 86° F., with a high humidity. The town has 12,754 inhabitants, 

 mostly Indians, and instead of a sewer system there are 11 miles of 

 open drains. The larvae of Stegomyia fasciata were found in all 

 artificial containers of water, but not elsewhere. Mansonia tiiillans 



