13 



behind the entire abdomen displays a faint metallic sheen, showing 

 through the pollinose covering and similar to that on the scutellum. 

 The wings, which are deep blackish-brown, are much darker than in 

 G. palpalis or G. fusca, with more or less distinct dark brown borders 

 to the veins. The legs are entirely black throughout, while the femora 

 and tibae have a pollinose covering of dark ashen-grey ; the tarsi of 

 all three pairs of legs without distinction are uniformly black. 



In concluding his description, the author of this species writes : 

 " Glossina ziemanni is at once distinguishable from all its known 

 congeners by its uniformly dark coloration, intensely infuscated wings, 

 and, above all, by its entirely black tarsi. Owing to the latter 

 characteristic, it cannot be included in any of the known groups, but 

 must be regarded as belonging to a group of its own." For the present, 

 however, until the acquisition of further specimens enables an examina- 

 tion of the genital armature to be made, it would seem preferable to 

 treat G. ziemanni as an additional member of the G. palpalis Group, 

 the original diagnostic characters of which are in no way invalidated 

 by its inclusion. 



The typical series of specimens of this species was received in alcohol, 

 and while still preserved in this way the insects " at once attracted 

 attention owing to their uniformly dark coloration, 'and especially 

 owing to the deep blackish tint of their wings. They were strongly 

 reminiscent," continues Griinberg, " of Glossina palpalis, and at first 

 looked not unlike somewhat dirty examples of this species, although 

 serious doubts as to their true character arose forthwith. After the 

 flies had been dried, it was evident at the first glance that they belonged 

 to a distinct species, essentially different from G. palpalis, as from all 

 others." 



The only individuals of G. ziemanni so far discovered are 1 , 5 $?, 

 taken at Mina, Mbam R., Cameroon, 15.i.l912, and forwarded to 

 Berlin by Dr. H. Ziemann. 



No information as to the bionomics or habitat of the species is yet 

 available. 



GROUP II. 



All the Tsetse-flies still to be described under Group headings exhibit 

 the following characters in common : " Hind tarsi not entirely dark 

 brown, blackish-brown, or black above, but either last two joints 

 alone so coloured, and thus forming a conspicuous contrast with 

 remaining joints, which are entirely pale, or last two joints, viewed 

 from above, conspicuously darker than first two or first three joints " 

 (Austen) . 



The summary of characters given by Austen for the Glossina 

 morsitans Group, or Group II, consisting of G. morsitans, Westw., 

 G. pallidipes, Austen, and G. longipalpis, Wied., is as follows : 

 " Upper surface of abdomen distinctly banded, i.e., ground colour 

 pale (drab-grey, buff, or ochraceous-buff), marked with very con- 

 spicuous, dark brown or clove-brown, transverse bands, interrupted 

 in the median line." 



Glossina morsitans, Westw. (Plate II, Fig. 1). The following is 

 Austen's diagnosis : " Dorsum of thorax light grey, olivaceous-grey, 

 or smoke-grey in $, drab-grey in $, the thoracic markings in both 

 sexes incompletely developed and reduced to brownish or mouse- 

 grey longitudinal streaks ; dorsum of abdomen buff to ochraceous- 

 buff (in pinned specimens sometimes mouse-grey or olivaceous owing 



