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The armature of this tsetse-fly bears some resemblance to that of Glossina 

 tabaniformis, Westw., but it is abundantly distinct from this or any other species. 

 The distinguishing characters are : that the harpes have three processes instead 

 of four, as in G. tabaniformis ; the great width and the serrations of the proximal 

 pair ; the extreme narrowness of the second pair ; and the ribbon-like character 

 of the third pair. Another distinguishing feature also is the great size of the 

 sclerite in the vesica. 



This description is based upon an example in the collection of the Liverpool 

 School of Tropical Medicine which bears the simple data " Congo Free State." 

 There can be no possible doubt as to the identity of the species as, through the 

 courtesy of Mr. E. E. Austen, I have been able to examine the male genital 

 armature of his type specimen in the British Museum, and I find that it agrees 

 in all its morphological details with that of our example. Furthermore, I am 

 indebted to Dr. H. Schouteden for giving me the opportunity of examining the 

 only other example known at present, which is now in the collections of the 

 Musee Congo Beige. I may add also that the last-named specimen was captured 

 in the same region of the Congo Free State as that in which Mr. Austen's type 

 was discovered. 



Glossina longipennis, Corti. 



In my former description of the armature of the male of this species* I was 

 unable to give a full account of the various structures owing to the fact that my 

 specimens were mounted so that only a dorso-ventral view of them was possible. 

 Now that I have succeeded in obtaining another example of this tsetse-fly the 

 armature has been mounted so that it can be examined in profile and thereby a 

 more correct interpretation of the various structures, and also the relationship 

 which they bear to the "jfasca-group," has been rendered possible. It may be 

 readily seen on comparing the illustration (fig. 3) with those of other members of 

 this group that the morphological characters are markedly distinct and quite 

 unique. 



The description herein appended and also the accompanying illustration have 

 been drawn up from an example kindly presented by the Entomological Research 

 Committee, to whom I am greatly indebted. The following data were attached 

 to this specimen : Tana Eiver, British East Africa, 1911. 



Genital armature of the male (fig. 3). — The superior claspers (sc) appear much 

 more slender when seen in profile than dorso-ventrally ; the apices are also much 

 more falcate. The harpes (h 1, 2) consist of two pairs of appendages; the basal or 

 proximal pair (hi) are very large, sub-quadrate in outline, with a depression on 

 the distal margin, which gives them a bilobed appearance in examples which have 

 been completely dissected out (vide Bull. Ent. Res. II, p. 21, fig. 8h), and further- 

 more they are covered with large squamose spines ; the distal processes (h 2) are 

 long, slightly dilated proximally, narrow and strongly recurved distally, being also 

 rather widely separated from the broad spinose appendages basally. The median 

 process (mp) occupies a unique position, in that it lies between the spinose harpes, 

 while in the other members of this group it originates between the inferior 



* Bull. Ent. Res. II, p. 21 (1911). 

 27226 B 



