40 Aiiinilii of the 



SYSTCECHVS YENTRICOSUS, sp. nov., J . 



This species is much like the larger specimens of mivtuf. Wied., but 

 is at once distinguished bv the more narrowly approximated eyes of 

 the male, by the entirely yellow legs and abdominal bristles and by 

 the non-infuscated base ot' the wings. 



Type (. a single specimen from Stellenbosch (Cape) (L. Pcriu- 

 guey). 18S8. 



Length of the body 13 mm., of the wing 13 mm. Head black, 

 dusted with grey, of the usual shape, viz. much smaller than in 

 fcabrii-'tsti-lf. The occiput is clothed with dense and short fulvous hairs, 

 which become paler below, changing to a quite white beard : the froiis 

 is verv narrow, its breadth at the narrowest point being half as much 

 as the distance between the two basal ocelli ; it is clothed in the 

 middle with erect black hairs like those of the ocellar tubercle, and on 

 the sides with shorter and vellow ones. The frontal triangle is half as 







broad as in the preceding species, with a less distinct median furrow ; 

 the face is entirely clothed with dense hairs, which are black on the 

 middle and on the sides and yellow along the mouth-borders, forming 

 a dense fringe which is produced to the extreme eud of the geuae. 

 Peristome short and moderately broad : the bare eyes have the upper 

 areolets a little larger than the lower ones. Antennae entirely black, 

 the first joint with long and rigid black hairs above and below ; third 

 joint longer than the two first joints taken together, almost linear, 

 broadening very little towards the base. Proboscis entirely black, 

 <:> 5 mm. long, with the labiuui smooth below ; palpi hidden. Thorax 

 clothed with short, equal and dense fulvous hairs, without any black 

 hairs or bristles, and with strong sericeous sheen if viewed from the 

 front ; before the root of the wings others are bright fulvous tufts, 

 which on the pteropleura and on sternopleura are paler but on the 

 breast are still fulvous : metapleural tuft fulvous. Scutellum entirely 

 red. with only a very narrow black base, clothed like the thorax and 

 with yellow bristles at the hind border. Squamae yellowish, with 

 dense fulvous fringe ; halteres with whitish knob. Abdomen broad 

 and ovate, black, but narrowly red on the sides, clothed with dense 

 equal fulvous hairs like those of the thorax : hind border of the 

 segments with fulvous bristles which are concealed among the fur; 

 venter with dense fulvous hairs arid with a stripe of white hairs on 

 each side : genitalia of greater size, their lamellae fulvous, with dark 

 base. Legs entirely yellow, the coxae and the extreme base of femora 

 and almost the whole of the tarsi blackish : they are clothed with pale 

 scales and have a few pale hairs on the base of the femora below ; the 



