SYKlMirs. 



31 



2. Syrplms eutaeniatus, sp. n. 



$ . Length 1:2 mm. 



Very distinct from any other of the copensis-gro\\\j on account 

 of its sinuous third vein and its very short hairy abdomen, which 

 bears three equal yellow bands reaching the sides. 



This species shows unmistakable affinity to true Lasiopthicus, 

 but belongs without any doubt to the eapcntit-adligatvs-groiiip, 

 which is so characteristic of the Ethiopian fauna. 



Head yellow, covered with dark grey tomentum on the occiput 

 and on the frons, the vertical portion of which, however, is broadly 

 shining black ; frons not swollen, clothed with short but dense 

 black hairs ; face with a small black tubercle and short dark hairs ; 

 peristoma broad, wholly yellowish grey, without the black stripe of 

 cctjjensis ; hair on the postocular border long and dense yellowish 

 above, white and thicker below ; antenna? entirely black, the third 

 joint less elongate and rounded at the tip ; eyes clothed with 

 short pale hair. Thorax shining black on the disc, with some 

 bluish reflexions, clothed with long erect pale yellowish hairs ; on 

 the sides of the dorsum there is a little grey dust ; pleurae dullish, 

 with pale hairs which form a tuft before the root of the wings. 

 Scutellum pale yellowish, mainly black-haired ; squamulse whitish, 

 halteres and plumula? white. Abdomen oval, shining bluish black, 

 with short black hair, except at base, where the hair is long and 

 pale ; first segment black ; second with a yellow band near the 

 fore border, interrupted towards the middle ; third and fourth with 

 an equal complete band on fore border ; fifth wholly black, with 

 only a small yellow spot on the sides at the fore border. These 

 yellow bands are clothed with short pale hairs ; the portion of the 

 segment just after the band is blacker and a little less shining 

 than the rest. Venter pale yellow, with two broad black bands 

 before the end and clothed with long white hair. Legs reddish 

 yellow ; femora blackened towards the base, those of the hind pair 

 more broadly, having only the apex yellow ; tarsi black, the hind 

 pairs yellowish at base. AVings hyaline, with black veins, narrowly 

 yellowish towards the base ; mediastinal cell dark yellowish over its 

 whole length, but the stigma not at all blackened at the base ; vena 

 spuriti strongly chitinised, as black as the other veins ; the shape 

 of third vein and of the subapical cell are exactly the same as in 

 Las. pyrastri. 



Ti/fie $ . a single specimen, from Marsabit, British East Africa 

 (R. J. Stordy). 



23. Syrphus inflaticornis, sp. n. 



$ . Lencjth 11 mm. 



Easily recognised by the very long, swollen, and pointed third 

 antennal joint, and by the distinctly swollen basal joint of hind 

 tarsi. 



Head black ; frons wholly black, strongly shining, with purplish 

 reflexions towards vertex and above antennie, towards the middle 



