﻿TABANIDAE — rART I. 



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to the National Collection by the Entomological Research Committee) : two 

 specimens from the south-east slopes of Mt. Kenia, alt. 6,000 to 7,000 ft., 

 3— 12.ii.l 911 ; one specimen from the southern slopes of Mt. Kenia, 6.ii. 1911 ; 

 one specimen from Meru (north of Mt. Kenia), 14.ii.l911 ; three specimens (one 

 " biting native ") from the eastern foot and slopes of the Aberdare Mts., alt. 

 7,000 to 8,500 ft., 24-27.ii.1911. 



Tabanus canofasciatus is distinguished from T. ruwenzorii, Ric, — -another hairy- 

 eyed species to which it is closely allied and to which it presents a strong 

 resemblance in general appearance, — inter alia by the colour of the hairs clothing 

 the terminal joint of the palpi, which are black in the case of T. ruwenzorii, and 

 by the presence of the hoary, pollinose, transverse band on the second abdominal 

 segment, this band being completely absent in T. ruwenzorii. 



It is worthy of remark that both species— which, owing to their eyes being 

 hairy, belong to the " subgenus " Therioplectes, now no longer recognised — are 

 mountain forms, the type and para-type of T. ruwenzorii, which are the only 

 specimens of this species at present known, having been obtained at an altitude 

 of between 5,000 and 13,000 ft., in East Ruwenzori, Uganda Protectorate/ 1 ' 



Tabanus tenuipalpis, sp. n. (fig. 6). 



Q. — Length (2 specimens) 17*2 to 17*5 mm. ; width of head 5*75 to 6*25 mm. ; 

 width of front at vertex 0*5 mm. ; length of wing 15*75 to 16 mm. 



Dark brown species {dorsum of thorax — except scutellum, which is paler — sepia- 

 coloured), with exceedingly narrow front, and remarkably slender palpi ; dorsum of 



Fig. 6. — Tabanus tenuipalpis, Austen, £. X 2|. 



abdomen with whitish markings, as shown in Jig, 6 ; wings strongly tinged with 

 sepia, especially about fork of third vein and along hind border. 



Head : subcallus, face, jowls, and basioccipital region light grey or yellowish- 

 grey, occiput grey ; face and jowls sparsely clothed with short, fine, blackish 

 hairs, basioccipital region clothed with longer whitish hair ; front grey (appearing 

 dark brown, except on each side of callus, when viewed at certain angles), 

 narrowing from above downwards and (estimated by eye) about nine or ten times 



* [Two additional specimens (both females) have recently been taken in Ankole, Uganda, 



by Dr. R. E. McDonnell.— Ed.] 

 25110 B 2 



