338 ^Ii'- K. E. Austen on new 



Up to the present time the species belonging to tliis new 

 genus, which is sufficiently characterized in the foregoing 

 diagnosis, have been met witli only in South Central Africa. 

 In addition to the typical species^ Pangonia conipacia cen- 

 tralis, Austen (Ann. & Mag. Nat. Hist. loc. cit. p. 214: — 

 Nvasaland Protectorate), and P. fodiens, Austen {ibid. 

 p." 215 : — Nyasaland Protectorate), also belong to Dorca- 

 lannus. 



From the South-American genus Scione., Walk., in which 

 the fourth posterior cell is likewise closed, Dorcaloemus is 

 distinguished by its species having bare eyes and a very 

 different fades. 



Dorcalmnus bicolor, sp. n. 



(J. — Length (1 specimen) 13'5 mm.; width of head 

 4'25 mm. ; distance from upper margin of occiput to anterior 

 extremity of face 325 mm. ; length of proboscis 5*2 mm. ; 

 greatest width of abdomen (base of second segment) 5 mm. ; 

 length of wing 9 6 mm. ; greatest width of wing 3'6 mm. 



A slenderly built species, with {at least in the S ) relatively 

 narrow tapering abdomen. — Face short, but little prominent, 

 yelloivish'White pollinose, lotver part of sides clove-ht'own * ; 

 thorax olive, yellowish pollinose ; first three segments of abdo- 

 men huff on dorsum, cream-coloured beloiv, remainder of abdo- 

 men clove-firuwn, on dorsal surface an area on first segment 

 immediately beneath scufelluni and a median basal spot on 

 second segment also clove-brown ; ivings with a light sepia 

 tinge ; femora, except extreme tips, clove-brown or black, tibia, 

 tarsi, and extreme tips of femora cream-bnff, last two joints of 

 all tarsi and tips of remaining tarsal joints brown or broivnish. 



Head : upper part of sides of face and basi-occipital region 

 clothed with pale yellowish hair; palpi clove-brown, terminal 

 joint curved and very slender ; proboscis black ; first and 

 second joints of antennee clothed with black hairs, first joint 

 blackish, grey pollinose, second joint buff, third joint ochra- 

 ceous-rufous, somewhat brownish at tip. Thorax : dorsum, 

 including scutellum, clothed with bright Naples-yellow hair, 

 mixed with dark brown hair, especially on anterior portion 

 of dorsum and on hind margin of scutellum ; pollinose 

 covering on sides of dorsum lighter than that on disc of 

 dorsum ; pleurse clothed with pale yellowish hair, a tuft of 

 black hair immediately in front of and below base of wing. 



* For names and illustrations of coIoum, see Eidgway, ' A Nomen- 

 clature of Colors for Naturalists' (Boston: Little, Brown, & Company, 

 1886). 



