69 



of cyliudrical metal diist-bius to be distributed about the villao-e, 

 so placed as to be out of the reach' of children, and the surface of 

 the contents of these were regularly sprayed, enormous numbers 

 of flies being thus destroyed. In 1912 the author experimented 

 with bunches of straw hung outside the houses under a zinc 

 cover to protect them from the weather, the straw being dipped 

 in the following mixture : —Honey, 1 part ; treacle, 1 part ; sodic 

 arsenite, -^- part; water, 10 parts. By the use of 1 cwt. of treacle 

 and a few kilograms of waste honey and the assistance of one 

 labourer, the author succeeded in each of two years in almost 

 totally destroying the flies in the village during the period of 

 his residence. Three days- after the commencement of operations 

 the reduction was so great that instead of having his meals 

 interrupted and even prevented by veritable clouds of flies they 

 were reduced to two or three, and the same occurred in other 

 houses in the village. It is suggested that if the method were 

 systematised, it would be possible to adopt it as a thoroughly 

 practical means of ridding even large places of the pest. Prof. 

 Berlese further notes that when these methods are carefully 

 applied in the neighbourhood of stables, the numbers of 

 Stomo.ctjs calcifrans were notably diminished. 



YERBrRY (Col. 'T. W.). Haematopofa iiaVica, Mg.. in Cornwall. 

 ~-Ent. Monthhj Mag., March 191:3, p. (55. 



Two female specimens were taken by the author in Sheviock 

 Wood close to the tidal waters of the Eiver Lynher in September 

 1912. 



EouBAUD (E.). Etudes biologiques sur les Auchmeromyies. 

 [Bionomics of Auchnteromijia.] — Bull. Soc. rdth. E.vof., vi, 

 1913, pp. 128-130. 

 Auchmeroinyia luteola, F., and Cltoeroinijia, of which the 

 author has described two species from the Sudan, represent a snuUl 

 special group of Calliphorinae characterised by the blood-suck- 

 ing habits and intermittent parasitism of the larva. The adult 

 .1. luteola avoids the light, and this habit is still more pronounced 

 in C/ioeiovijjia, because they live in the darker parts of the burrows 

 of mammals. This habitat is more or less general in these species. 

 In the Upper Gambia, the author has discovered .i. (Choeroiiiijla) 

 praegrandis, Austen, living in the burrows of the antbear 

 (Orijcteropus), as does the CltocioiDijia of the Sudan. ^ All Aucli- 

 meromyia are equally sensible to heat; they die rapidly in the 

 sun or if exposed to a temperature of 45° C. in a closed chamber; 

 in cages which are unequally heated they seek the coolest part. 

 The adults of all Auchmeromijia are blood-feeders. They can be 

 kept alive for a considerable time on a diet of sweet litjuid, but 

 this appears to render them incapable of oviposition. In capti- 

 vity --i. luteola was observed to have at least two definite periods 

 of oviposition, separated by an interval of about a month. The 

 author has obtained as many as 83 eggs from a single fly, the 

 larger proportion of which were deposited on the first occasion. 

 The larvae of Auchnieroun/la are exclusively blood-feeders, 

 taking no other nutriment, and their power of resisting starvation 



