TABANTNAE. — PART IV. 289 



in the case of the proximal and distal rosettes, the much greater breadth and 

 pure white colour of the bands on the front and hind tibiae, and the presence of 

 conspicuous fringes of hair on the latter and on the front and hind femora. Haema- 

 topota hast at a would appear to be somewhat more distantly allied to H. vittata, 

 Lw. (syn. H. pvlchri thorax, Austen), to which it presents an approximation in 

 the shape and coloration of the frontal callus of the Q , shape of the first and of 

 the expanded portion of the third joint of the antennae, and presence of the dark 

 band on the face. Apart from all other characters, however, the new species can 

 at once be distinguished from H. vittata owing to the much greater depth of the 

 terminal annuli of the antennae in H. hastata, and to the absence of the grey 

 marking on the dorsum of the thorax that is characteristic of H. vittata. 



The most noteworthy differences between Haematopota hastata and the 

 following species, to which it is perhaps allied more nearly than to any of its 

 African congeners yet described, are pointed out below. 



Haematopota harpax, sp. n. 



Q. — Length (3 specimens) 9*8 to 12 mm. ; width of head (2 specimens) 3*4 to 

 3*6 mm. ; width of front at vertex (2 specimens) 1*2 to 1*4 mm. ; length of wing 

 (2 specimens) 10*4 to 11 mm. 



Moderately large, dark-coloured species, with dark sepia-coloured thorax and 

 wings and dark brown abdomen ; face ivith a clove-brown transverse band below 

 antennae ; antennae resembling those of foregoing species in shape, except that 

 distal angles of second joint are even more conspicuous, being each produced into a 

 long, thumb-shaped process ; grey markings on dorsum of thorax and abdomen 

 resembling those of foregoing species, but median stripe on third and following 

 ahdominal segments may be wanting ; pale bands on front tibiae near base darker 

 (cream-buff instead of waxen-white) and narrower than in H. hastata. 



Head: drab-grey pollinose, face below clove- brown transverse band lighter ; 

 front of moderate and uniform breadth, not expanded anteriorly, with a large sepia- 

 coloured patch between lateral frontal spots, and another, median and somewhat 

 cordate patch of similar colour on vertex, extending to median frontal spot 

 (when rubbed, front, except vertical angles and a narrow margin next each eye, 

 may appear sepia-coloured) ; median and lateral clove-brown frontal spots 

 conspicuous, lateral spots elongate, in contact with or narrowly separated from 

 eyes ; front sparsely clothed with short, dark brown hairs, face and jowls 

 clothed with longer hair of same colour, basioccipital region clothed with whitish 

 hair ; clove-brown transverse band on face extending from eye to eye, clove- 

 brown median spot above bases of antennae, and between latter and frontal 

 callus, distinct ; frontal callus mummy-brown, small, forming a narrow transverse 

 band incompletely divided in middle line by a triangular pollinose prolongation 

 from the front, and with its upper lateral angles rounded off, so that callus is 

 narrowly separated from eye on each side ; palpi dark, proximal joint and base 

 of terminal joint greyish sepia-coloured, remainder of terminal joint clove-brown 

 on outside, terminal joint elongate, moderately swollen towards base, clothed on 

 outer side with short, appressed, black hairs, proximal joint and base of terminal 



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