EENEST E. ArSTEN — DIPTEEA. 89 



with four fairly deep transverse black bands, each of middle two of which is in s 

 narrowly connected with foregoing band on each side ; these bands occupy hinder 

 portion of second and three following segments, and each of first three bands also 

 encroaches slightly on following segment ; there is also a semicircular black median 

 area on first segment, posterior margin of which extends over on to second segment, 

 on which it is connected by a median black longitudinal mark with first black 

 transverse band; in $, yellow band on third segment is slightly constricted in 

 middle ; dorsum of abdomen, except basal angles, clothed with black hair, basal 

 angles clothed with chrome-yellow hair ; venter yellow and clothed with pale 

 chrome-yellow hair, lateral extremities of second and third dorsal black bands 

 more or less visible; genitalia of 6 orange-bufF, poUinose, and clothed with pale 

 chrome-yellow hair. Wings brownish, stigma russet ; bend of third longitudinal vein 

 above first posterior cell shallow but fairly sharp. Hcdteres yellow. Legs orange-buff', 

 tarsi dark brown, hind femora and tibise in s brownish. 



Hab. Euwenzori: <s , Mubuku Valley, E. Ruwenzori, 5000-7000 ft., 15th Jan.; 

 ? , Ruwenzori, 7000-8000 ft. ((?. F. Scott Elliot). 



ASAKCINA PUNCTIFROKS, sp. n. (Plate III. fig. 5.) 



<3 . — Length (1 specimen) 12-5 mm. ; width of head 4 mm. ; length of wing 

 12"5 mm. 



Face conical. Agreeing with A. rostrata Wied. in general coloration, but black 

 transvei'se bands on abdomen deeper ; a relatively large clove-brown median spot on 

 frontal triangle above base of antennae; facial tubercle in type reddish brotvn, but 

 {at any rate in type) no distinct median black stripe on face, and no dark broivn semi- 

 (rircular mark above front edge of buccal cavity ; first and second joints of antennce 

 stout, first joint barely one-fourth longer than second, loiver margin of third joint 

 ochraceous-rufous ; second segment of abdomen with a very narrow median black 

 longitudinal stripe ; yellow bands on third and following segments not constricted in 

 middle; wings strongly infuscafed, the colour somewhat intensified at certain spots, 

 such as distal extremity of second longitudinal vein ; first and second costal cells darker 

 than remainder of wing except stigma. 



Head deep saffron-yellow, frontal triangle clothed with black hair, face with saffron- 

 yellow hair ; occipital margin clothed above with pale yellow, on sides and below 

 with silvery hair; first and second joints of antennae cinnamon-rufous, third joint, 

 except extreme base and lower margin, dark brown, arista dark brown. Thorax as in 

 A. amoena Austen. Abdomen also as in foregoing species, except that median black 

 stripe on dorsum of second segment is longer and more attenuated, while (at least in case 

 of type) yellow band on third segment shows no trace of median constriction. Wrings 

 bistre, with lighter and dai'ker regions; depression of third longitudinal vein above 

 first posterior cell merely a very gentle undulation rather than a bend. Halter es 



VOL. X]X. — PART I. No. 12. — October, 1909. N 



