52 SPECIES ADDED m LAST HALF-CENTUEY. 



of five-and- thirty years, during which no addition was made to 

 our systematic knowledge of the genus Glossina, though in the 

 Appendix to Oates' " Matabele Land and the Victoria Falls " 

 [73] a coloured figure of Gl. morsitans, and details of the antenna, 

 mouth-parts, and tarsus were given by Westwood [74]. In 1885 

 a supposed new species of Glossina was described by the late 

 Mons. J. M. F. Bigot [89], under the name Gl. ventricosa, and 

 the description was pi'eceded by a table (in French) for the 

 determination of this and five other previously described species 

 of Tsetse-flies. The writings of this author, however, were 

 seldom distinguished by critical acumen, and the table in 

 question, being based merely upon descriptions, is of little value. 

 As to Glossina ventricosa, an examination of the typical speci- 

 mens shows that they are nothing more than examples of GL 

 palpalis, Rob.-Desv., with their abdomens distended with ^ 

 coagulated blood. Bigot's suggestion that his supposed new 

 species hails from Australia will be found discussed below under 

 Gl. palpalis — " Synonymy and Affinities " (Chapter IV., p. 78) : 

 as will be seen, there are in reality no grounds whatever for 

 supposing that Glossina occurs outside Africa. 



The next two species of Glossina — Gl. grossa and Gl. palli- 

 cera — were described, likewise by Bigot [II3], in 1891. The 

 types of both of these are from Assinie, Ivory Coast, and their 

 author suggested that both might be merely varieties of 

 Glossina longipalpis, Wied., by which he meant Gl. palpalis, 

 Rob.-Desv. ; but, as will subsequently appear (Chapter IV.), 

 Gl. grossa is actually a synonym of Gl. fusea, Walk., while 

 Gl. pallicera is a perfectly good species. 



Of the remaining species, Glossina longipennis, Corti, the 

 Somaliland Tsetse-fly, was described [130] in 1895 from a 

 specimen from the Boi'an Galla country, on the confines of 

 Abyssinia and Somaliland ; while the last on the list, Glossina 

 pallidipes, is now described in Chapter IV. for the first time, 

 having hitherto been confounded with Gl. morsitans, Westw., 

 with which it is apparently associated to some extent in 

 geograpliieal range. 



