48 Miss G. Ricardo on the Asllidoe. 



A large blackish species, not unlike Machimus armijjes, 

 Beckei', judging from the description, found in the province 

 of Beluchistau, Persia ; but the bristles on fore femora are 

 more than two in number and those on the s;utellum onlv 

 four or five, not ten as in Becker's species. In this species 

 tiic typical characteristic of the genus, viz., the production 

 of the eighth ventral segment, is not very conspicuous, Avhicli 

 is a[)parentlv also the case iu Becker's species. 



Length, ^ 20-23, ? 20-26 mm. 



Male. — Face and tubercle covered with pale yellowish 

 tomeutura ; moustache composed of stout, long, yellowish- 

 white bristles, with two black bristles below at each side. 

 Pu/pi black, with long black hairs. Beard whitish yellow, 

 the hairs round the head similar, but becoming bristles halt- 

 way up. Antenna blackish brown, the first two joints with 

 black hairs, the third with a style about the length of the 

 joint. Postocular bristles black and very stout. Thorax 

 greyish yellow with the usual brown stripes, the median one 

 hardly divided anteriorly ; the dorsum of thorax covered with 

 small, very short, black bristles, the large bristles all black ; 

 the prsesutural, supra-alar, and postalar all two in number; 

 the dorso-central bristles are about ten, disposed in two 

 rows, a few long black hairs are intermixed with them. 

 Scutellum with four or five very stout, long, bhick bristles 

 and with fine yellow hairs. Abdome7i with the usual large 

 black-brown spot on each segment, leaving the segmen- 

 tations yellowish grey ; the first segment has a tuft of 

 yellowish hairs at each side and two long black bristles 

 below; the next four segments with yellowish short bristles 

 at the sides, continued on to the dorsum as fine yellowish 

 bristly hairs ; the eighth ventral segment only slightly 

 })roduced with some long black bristly hairs on its margin 

 and a few white ones beyond. Legs black, with appresscd 

 whitish pubescence ; femora all stout, the fore pair with 

 three black bristles above and four below, the middle pair 

 with about nine in two rows and f(mr at the apex ; the hind 

 pair with six below and one or two long white bristles at tl e 

 base, four above and two near the apex and three at the 

 apex; the fore femora with long, fine, yellowish hairs below ; 

 the fore tarsi with black ones and with orange-red appressed 

 pubescence underneath, which is also present, but paler in 

 colour on the hind pair; both the middle and hind pair ha\e 

 black hairs below, not so long as those on the fore pair; all 

 tibiai and tarsi armed with stout black bristles. Wivys clear, 

 the shading on fore border and apex not very distinct; the 



