28 G. PALPALIS: SYNONYMY, AFFINITIES, ETC. 



which a mass of literature is already in existence, and is 

 increasing week by week. The latest information on the subject 

 will be found in the monthly " Bulletins " of the Sleeping 

 Sickness Bureau.* 



►Synonymy, Affinities, and Distinctive Characters. 



As stated in the author's " Monograph " (p. 78), Glossina 

 ventricosa, Bigot, was described from two female examples of 

 G. falpalis, Rob.-Desv., in which the abdomen is enormously 

 distended with coagulated blood. Thanks to the generosity of 

 Mr. G. H. Verrall, these specimens are now in the National 

 Collection. 



Some few years ago, by the courtesy of Mr. Newstead, the 

 author was enabled to examine the type of Glossina maculata, 

 Newst. (a $ ), which pi'oved, in his opinion at any rate, to be a 

 specimen of G. imJpalis, Rob.-Desv., curiously spotted by some 

 foreign matter. Mr. Newstead is unfortunately unable to accept 

 this conclusion, and it is therefore with especial reluctance that 

 the author of this volume is compelled to state his conviction, 

 and to regard Glossina maculata, Newst., as a synonym of 

 G. paljjalis, Rob.-Desv. f 



In external characters, at least, Glossina palpalis, Rob.-Desv., 

 is more nearly related to G. fuscipes, Newsfc. (p. 29) and 

 G. caliginea, Austen (p. 30, Plate II), than to any other species 

 of the Glossina palpalis group yet described. According to 

 Newstead's description of the former species, G. palpalis is 

 distinguished from G. fuscipies by its much larger size, and by 

 the thorax not being " dusky grey," or the legs " uniformly 

 infuscated or dusky." From G. caliginea, Austen, G. palpalis is 

 distinguishable, inter alia, by the head being distinctly narrower, 

 the arista shorter and stouter, the abdomen blacker, the median 

 paler area on the second abdominal segment cuneate in outline 

 instead of more or less quadrate, and by the wings being paler. 



* A most useful summary (by Dr. A. G. Bagshawe, Director, Sleeping 

 Sickness Bureau) of what was known as to the bionomics of G. palpalis at 

 the commencement of 1909 is to be found in the Sleeping Sickness Bureau 

 Bulletin, Vol. I, No. 3, pp. 89-106 (January, 1909). This has since been 

 reprinted, and is to be obtained separately from the Sleeping Sickness 

 Bureau, Royal Society, Burlington House, London, W. 



t It is perhaps permissible to mention that Mr. C. 0. Waterhouse, 

 Vice-President of the Entomological Society of London (late Assistant- 

 Keeper, Insect Section, British Museum (Natural History) ), who made an 

 entirely independent examination of the type of G. maculata, was emphati- 

 cally of the opinion that the spotted appearance of the specimen was " not 

 natural." 



