67 



During" March 1921 Tabanus albimedius, T. hicallosns and Chrysops 

 sp. were found ovipositing freely on leaves of Polygonum along the 

 banks of a river. The eggs of T. albimedius were heavily infested 

 with a Chalcid {Phanarus sp. ?), the other two species being only 

 Hghtly infested. The parasites oviposited in the upper and lower 

 layers of eggs, the former producing males and the latter females. 

 The males emerge twenty-four hours before the females. Oviposition 

 occurs soon after emergence. In the laboratory a single female ovi- 

 posited seven times, but under natural conditions the number of eggs is 

 greater. The life-cycle of the parasite extended to nine days at Pusa, 

 when the incubation period of the eggs of T. albimedius was six days. 



I^arvae of Aedes {Sfegomyia) thomsoni, A. (5.) albopicUis, A. (S.) 

 gubernatoris, A. [S.) w-alba and of the Tabanid, Gastroxides ater, 

 have been commonly found in tree-holes. Experiments were under- 

 taken with reference to the role of blood in ovulation in Culicidae. 

 The author having found Culex vishnui sucking a Syntomid moth in 

 Ceylon, endeavours were unsuccessfully made to induce Stegomyia sp. 

 to feed on living Lepidoptera. 



.Some observations are recorded on the toxicity of certain chemical 

 substances with reference to the larvae of A. albopictus. 



Some flies, identified as Chrysomyia bezziana, Vill., were reared 

 from larvae extracted from wounds in the soft palate of a patient 

 suffering from this form of myiasis in Pusa. 



HuTsoN (J. C). Report of the Entomologist— /^f/)/. Ceylon Dept. 

 Agric, 1920, Peradeniya, 1921, pp. C. 15-17. [Received 23rd 

 January 1922.] 



The following ticks from cattle in Ceylon were identified in 1920 :— 

 Hyalomma aegyptitmi, Amblyomma integrum, Rhipicephalus sanguineus, 

 R. haemaphysaloides, Haemaphysalis bispinosa, and Boophilus sp. 



Waterston (J.). The Louse as a Menace to Man. Its Life-history 

 and Methods for its Destruction.— 5ri7. M7/S. {Nat. Hist.), London, 

 Econ. Ser., no. 2, 1921, 20 pp., 1 plate, 2 figs. Price Qd. 



This pamphlet is intended to replace an earlier one, " The Louse 

 and its Relation to Disease." Part I. deals with the life-histories 

 and habits of the lice found on man — Pediculus humanns humanus, L., 

 P. humanus corporis, De G., and Phthirus pubis. Leach, and their 

 relations with their hosts. Part II. discusses the louse as a vector 

 of diseases, such as typhus, relapsing and trench fevers, plague, the 

 bacillus of which may be accidentally transmitted by hce, and skin 

 affections, such as impetigo, pityriasis, favus, etc. Part III. deals 

 with the destruction of lice by heat or by chemical substances, the 

 former being the cheapest, simplest, and most efficient method. 



DE Mello (F.) & Afonso (P. C). First Entomological Records in 

 Portuguese la.^2i.—Rept. Proc. 4th Ent. Meeting, Pusa, February 

 1921, Calcutta, 1921, pp. 43-48. 



A list is given of the insects connected with medical entomology. 



The mosquitos include Anopheles subpictus, Grassi {rossi, Giles), 

 A. stephensi. List., A. ludlowi, Theo., A. leucosphyrus, Don., A 

 listoni, List., A. culicifacies, Giles, A. barbirostris, Wulp, A. jamesi, 



