197 



three species are added. Most of the author's collecting has been 

 done on the lower Fraser River and on Vancouver Island, and it is 

 thought that a number of up-country species are as yet unrecorded. 

 Harvey's specimens, as well as some of the author's, were determined 

 by Professor Hine ; others were sent to the British Museum, which 

 has led to some confusion in nomenclature. Hine's T. fratellus, 

 Wills., is called T. patulus, Walk., in the British Museum ; Hine also 

 gives priority to T. captonis, Martin, over T. comastes, Wills. 



Chrysops noctifer, O.S., which bites cattle and horses on the flanks and 

 shoulders and is a serious pest at times, is invariably the first species 

 to make its appearance, having been recorded as early as 30th April. 

 Its season is at its height by the end of May ; its numbers then 

 diminish gradually, and by the middle of June very few are to be 

 found. C. proclivis, O.S., appears about mid-May, is a pest in June, and 

 becomes rare towards the end of July. Tabanus hirtulus, Big., is 

 invariably the first of its genus, appearing in the latter part of May ; 

 its season is at its height in June, and it disappears about the middle 

 of July. T. hirtulus is the worst pest of cattle on the Lower Mainland. 

 T. affinis, Kirby, and T. captonis, Martin, appear a little after T. hirtulus 

 and are at their worst in July. T. sonomensis, O.S., appears about 

 15th July, and continues up to the middle of August. T. insuetiis, 

 O.S., appears in the middle of July and has a short season, not being 

 a serious pest in those districts where collected. T. fratellus, Wills., 

 is a bad pest, but only occurs in the hottest weather, not before 15th 

 July. It bites exclusively on the abdomen and might easily be over- 

 looked by the casual observer ; its habits are sluggish and it can 

 easily be taken by hand. Silvius gigantulus, Lw., appears in July in 

 limited numbers and bites the neck by preference. T. aegrotus, 

 O.S., occurs in July only on Vancouver Island, and considering its 

 size, it causes surprisingly little annoyance. Chnjsops frigidus, O.S., 

 T. nivosus, O.S., and T. sequax. Wills., are comparatively rare species. 



The author has made many attempts to find the breeding places 

 of these Tabanidae, but without success. Observations were mostly 

 made at Mount Lehman, a heavily wooded place, surrounded by 

 hills, where no males could be found. Unsuccessful attempts were 

 also made to find flies during wet weather in a field where they were 

 always plentiful in fine weather. Entomologists in the Province 

 agree that males are more frequently encountered in the mountains. 

 The necessity for further study of the Tabanidae in Canada is urged. 



Stomoxys calcitrans appears with great regularity about the middle 

 of April. Lyperosia irritans {Haematohia serrata), the horn-fly, and 

 the black-flies, Simuliidae, appear about the same time. A specimen 

 of Hypoderma lineatum, new to the province, is recorded. 



Mathis (C). Epid§mie de paludisme ayant s6vi dans la province de 

 Sontay durant Vtih de 1913. [On an epidemic of Paludism which 

 raged in the province of Sontay (Tonkin) in the summer of 1913.] 

 —Bull. Soc. Path. Exot., Paris, vii, no. 5, 13th May 1914, 

 pp. 388-391. 



A serious epidemic having been reported in certain villages in the 

 province as having caused a considerable number of deaths, an expert 

 was sent to investigate and discovered that the epidemic was due to 



