ERISTALIS. 189 



questriatiis, and was dest-ribed in the same year. I liave accepted the 

 latter name, as Dr. de Meijere has adopted it. LVistalomyia picta, 

 Bifi;., represented by the solitary d ii/pe in very bad condition, is 

 undoubtedly also this species. The tliorax is largely black 

 owing to the very narrow interstices between the longitudinal 

 stripes, otherwise the specimen exhibits no variation from the 

 typical form. 



150. Eristalis tabanoides, Jaenn. 



Eristalis fahaiioides, .Taeiiniclce, Abli. Senckeiib. Natmf. ties, vi, 

 p. 40i', pi. xliv. fig-. 4 (ISGT) ; Hecker, Mitt. Zool. Mus. l^erlin, ii, 

 p. 83 (1903); id., Zeitschr. Ilyui. Dipt, vii, p. 253 (1907). 



$. //(S«f? not produced below eyes ; latter bare, spotted. I'rons 

 and face dusted with pale yellowish-grey, with concolorous 

 pubescence which becomes whitish below antennae ; extreme front 

 margin of frons orange. Antenna3 bi'ownisli-orange, upper part 

 of 3rd joint blackish, arista orange, bare. Occiput dusted witli 

 ash-grey, a little wliite pubescence below. Thorax wholly ash- 

 grey ; dorsum with four shining black stripes of the ordinary 

 pattern, equidistant, moderate!)' broad, all rather pointed in front 

 and behind, the two median ones as long as the others. Hind 

 corners of dorsum blackish. Scutellum dull orange, with brownish- 

 yellow pubescence including some black hairs. Abdomen mainly 

 black ; 1st segment whitish, 2nd more or less yellowish, for a 

 triangular space at sides ; 2ud, 3rd and 4tli segments with a 

 moderately broad, arcuate, ash-grey band, its ends at the middle of 

 each side, where it is rounded off, the band extending forward to 

 the anterior margin on 3rd and 4th segments and sometimes almost 

 interrupted in middle on 2nd segment. The black ])ortion of each 

 of tiiese segments is divided into a dead-black arcuate band just 

 below the ash-grey one, and the remainder which is a^neous-black. 

 5th segment with basal half ash-grey, remainder shining black. 

 Hind margins of 2nd, 3rd and 4th segments broadly a3neous. 

 Pubescence of abdomen whitish on the grey i);irts and black on 

 the black parts. Le^s black ; coxa? dusted with ash-grey ; tips of 

 femora rather narrowly, basal half of fore tibiae, two-thirds of 

 middle pair and one-third of hind pair, yellowish. Tarsi blackisii, 

 middle pair orange on about basal half. Pubescence of legs 

 whitish. HV/;//.? quite colourless ; stigma pale brownish-yellow, a 

 minute blackish-brown dot at each I'lid ; squanue whitish, haltercs 

 orange. 



Leni/tJi, ]ii-l I mm. 



Hes'crib'Ml from two $ 2 ^'rom Quetta, vi. 1002 (Col. ^'>|,■sr); 

 and fiom others from various localities in Africa (Abyssinia, (iold 

 Const, British East Africa, Uganda, Nyassaland). The J isslill 

 unknown. The species appears to me valid, allhougli Bezzi 

 (!Syrpliida3 of Ethiop. E"g. p. 84, 1915) thinks that it may 

 possibly be a variety of qaiuquextridtus, F. (quiiir/Kcliin'Kttts, Bc/zi, 

 nee Fabr.). It was discovered in Massowah, and is recorded also 

 from Tunis. 



