305 



|[0N THE GENUS PHLEBOTOMUS.— PART IV. 



By R. Newstead, F.R.S., 



The School of Tropical Medicine^ Liverpool. 



P The following notes may be regarded chiefly as materials towards the study of 

 the geographical distribution of this group of the bloodsucking midges, which 

 are of so much interest from a medical standpoint. For the opportunity of 

 examining the very large series of specimens (570) herein recorded, I have to thank 

 Dr. Guy A. K. Marshall, Director of the Imperial Bureau of Entomology, who 

 sent the collections made by Drs. A. Ingram and J. W. Scott Macfie, ;n the Gold 

 Coast; 'and also that formed by Capt. J. Waterston, E.A.M.C, in Macedonia. 

 I tender my thanks also to Capt. P. A. Buxton, R.A.M.C, for the collections made 

 by him at Amara, Mesopotam a ; to Capt. H. W. Leatham, R.A.M.C, for examples 

 from Basra ; and to Major J. A. Sinton, V.C, I. M.S., for the specimens which he 

 collected in N.E. Persia, under exceptionally difficult circumstances, and also 

 for the long series taken by him in the N.W. Frontier Province of India. 



I may add to this short communication that the determinations of the specimens 

 herein recorded are based upon material which was carefuUy prepared and stained 

 for microscopical examination, as by this means the minute taxonomic characters 

 can be seen and studied with greater accuracy and ease. 



Phlebotomus antennatus, Newstead. 



Male (hitherto unknown). Pale form. Drab or straw-coloured ; fringe of costa, 

 anteriorly, rather strongly infuscated, that of the posterior margin not so. Hairs 



Fig. 1. Phlebotomus antennatus, Newst., ^ ; a, proximal segments of the 

 antenna; ai, terminal segments. P. minutus africanus,l:^Qw&t., (^ : 6, proxi- 

 mal segments of antenna. P. simillimus, Newst., <^ : c. proximal segments 

 of antenna. The figures a, h, and c are drawn to the same scale ; ai, at a 



much higher magnification. 



on wings and scales on legs very faintly iridescent in a strong light. Dark form. 

 Wing very heavily infuscated, especially the costal fringe on both margins ; the 

 hairs beautifully iridescent, and in certain lights strongly resembling the rich 

 deep blue of lapis-lazuh. The scales of the legs are also iridescent in certain lights, 



