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THREE NEW AFRICAN SPECIES OF THE GENUS CHRYSOPS 

 (FAMILY TABANIDiE). 



By Ernest E. Austen. 

 (Published hy permission of the Trustees of the British Museum.) 



V The following paper is the result of the study of material recently received by 

 the Entomological Research Committee, by which the types of two of the species 

 described below have been presented to the British Museum (Natural History) : 

 the type of Chrysops centurionis has been handed over to the National Collection 

 by its discoverer, Captain A. D. Fraser, R.A.M.C. 



Genus Chrysops, Meigen. 

 Chrysops magnifica, sp. n. (fis-. 1). 



Q — Length (5 specimens) 6'75 to 9 mm. ; width of head 2'5 to 3 mm. ; 

 width of front at vertex 1 mm. to just over 1 mm. ; length of wing 7 to 8"5 mm. | 



General coloration of dorsal surface of head and body chrome-yellow, saffron- 

 yellow or cadmium-yelloio* with dark markings as shoiun in fig. 1. — Head saffron- 

 yellow or chrome-yelloiv, frontal callus and facial tubercle shining black, ocellar spot 

 dull clove-broion ; antenna; black, first joint not sioollen ; thorax black, dorsum on each 

 side of middle line with a lateral and an admedian saffron-yellow or chrome-yellow, 

 pollinose, longitudinal stripe, the yellow stripes on each side of the middle line confluent 

 in fi-ont and behind ; dorsum of abdomen cadmium-yelloiv or saffron-yellow, with a 

 pair of black, longitudinal stripes, each composed, as shown in fig. I, of a series oj 

 elongate blotches somewhat irregular in outline ; roing-mar kings as shown in fig. 1 ; 

 legs in normal specimens entirely black, except bases of first joints of middle and 

 hind tarsi, wldcli are faintly tinged with cinnamon. 



Head (excejDt on ocellar spot, frontal callus, and facial tubercle) clothed with 

 short, saffron-yellow or cadmium-yellow hair ; frontal callus nearly twice as wide 

 as deep ; face with a single, median, /«ci«Z tubercle, showing no trace of a division 

 except (in certain specimens) a slight indentation in the centre of its upper margin ; 

 jxdpi greyish clove-brown or blackish, clothed on outer surface with chrome- 

 yellow or saffron-yellow hair, terminal joint large, lanceolate ; anif?i?i(B moderately 

 stout, but first joint not incrassate and second joint not short, first and second 

 joints clothed with short black hairs, which, on the inner and upper sides 

 of the first joint are occasionally mixed with saffron-yellow hairs. Thorax : 

 pleura each with a broad, saffron-yellow or chrome-yellow, pollinose stripe, 

 including humeral callus on each side and running below root of wing to 

 base of halter ; a second and shorter stripe below the one just mentioned, and 

 between middle coxa and root of wing ; pectus partly covered with chrome-yellow 

 or saffron-yellow pollen ; sciitellum saffron-yellow or chrome-yellow pollinose, 

 clothed, like the saffron-yellow or chrome-yellow thoracic stripes already described, 



* For names and illustrations of colours, see Ridgway, " A Nomenclature of Colors for 

 Naturalists" (Boston ; Little, Brown & Company, 1886). 



