13-i SVIU'HID.E. 



the first, with a thin black arista; second joint about one-third as 

 long as the first. Thorax entirely dull black, punctate, with short 

 yellowish pubescence ; hind part of the pleurae moderately shining, 

 and exhibiting a series of narrow furrows ; scutellum small, semi- 

 circular, punctate, and pubescent like the thorax. Squamulse white, 

 with short white fringes ; halteres pale yellowish. Abdomen in- 

 cluding the ventral surface entirely of a pale tawny colour, finely 

 punctate and dull ; its pubescence is very short and yellowish ; 

 genitalia of the male and ovipositor of the female of the same colour 

 as the abdomen ; first segment slightly infuscated below the 

 scutellum, second segment short, third twice as long as the second, 

 fourth two and a half times as long as the third, fifth in the female 

 as long as the fourth ; the sutures are obliterated towards the 

 middle, the oblique stripes of white dust on the sides are not very 

 noticeable, and in the female are almost wanting. Legs entirely 

 ochraceous, bare, and dull, only the coxae are black ; claws black, 

 pale at the base. Wings greyish hyaline, with black veins, which 

 have broad dark borders ; venation normal. 



Type J , a single specimen from Uganda Protectorate, Northern 

 Buddu, 3,800 ft., 16-18. ix. 1911 (8. A. Nea-ve) ; type $ , a single 

 specimen from Uganda Protectorate, between Jinja and Busia or 

 M'bwago's, E. Busoga ("some forest") 3,800-4,000 ft, 28. vii.- 

 1 viii. 1911 (same collccfcr). 



GROUP VI. (villosus, sp. n.). 



This group is limited at present to a single species, which, how- 

 ever, is distinguished from any other by the very remarkable 

 structure of the antennae. The antennae are also carried in a 

 different manner ; instead of being pendulous they are erect and 

 curve outwards, as in certain Laphriince or in Callicera. The 

 second antennal joint is rudimentary ; the first is rather short ; the 

 arista is normal. The head and thorax are clothed with rather 

 long hair ; the scutellum is not armed with spines ; the ocelli are 

 wide apart ; the venation is entirely normal. 



The bread head of the male, the structure of the antennae, and 

 the \vay in which these organs are carried give to this species a 

 very singular facies. and I was at first inclined to erect a special 

 genus for it. But I think it better to include it for the present 

 in Microdon, s. 1., on account of the fact that, apart from the head, 

 it shows no structural differences, and that the cephalic characters 

 a re also indicated in other species for example, the North- American 

 M. pacJiysfylitm, Will., which has a very broad frons in the male 

 and a third' antennal joint two and a half times as long as the first, 

 but the third joint is not erect and is pendulous as usual. In 

 the Javanese J\I. vespiforwis, de Meij., the third antennal joint is 

 nearly three times as long as the first, but is pendulous, and the 

 second joint is short but well developed. 



