148 Zoological Society. 



extending from it to the sides of the thorax, where it meets a curved 

 lateral brown line enclosing a fainter oval spot, the hind extremity of 

 each of which nearly joins, at the hinder angles of the back of the tho- 

 rax, a straight line running forwards into the disk, where it vanishes. 

 The upper side of the abdomen may be described as of a brown colour, 

 with the lateral and posterior edges and an ill-defined longitudinal 

 central band of fleshy ash : it is thickly clothed with minute black 

 hairs on the disk, and with long ones at the base and sides. The 

 wings and their veins are coloured as in Gl. morsitans. 



Glossina Tabaniformis, Westw. 



Griseo-fusca epistomate sericeo, thorace fasco-maculato, ahdomine 

 fusco-i'ufescenti apice sensim obfuscato, pedibus fusco-luteis 

 tibiis tarsisque nigra lineatis alls f usee infumatis. 



Long. Corp. lin. 6; expans. alar, liu. 13^. 



Hub. apud littus aureum Africse tropicalis occidentalis. (Mus. D. 

 Hope.) 



This species is very much larger than either of the preceding. The 

 head is comparatively much smaller and the wings much larger ; the 

 front of the head is dusky ; it, as well as the basal joints of the an- 

 tennae, is rather thickly clothed with black hairs ; the arista of the 

 antennae is luteous, with a dark line behind, and the branding setse 

 with which it is furnished are black ; the palpi are thickly clothed 

 externally with short black setae ; the thorax is dark greyish brown, 

 also very thickly clothed with short black setae and long curved lateral 

 bristles ; the back of the thorax is marked with a dark central lon- 

 gitudinal line, having a less distinct one on each side of it, between 

 which and each side are two large brown spots, one behind the other ; 

 the scutellum is paler, and marked with two ill-defined dusky spots ;. 

 the vdngs are stained brown ; the legs are dirty luteous buif ; the 

 tibiae marked vnth one, and the tarsi with three very delicate longi- 

 tudinal black lines ; the tibiae are compressed, and the black line occu- 

 pies the superior compressed ridge. 



Tribe MvoPARiiE, Macquart, Hist. Nat, Ins. Dipt. ii. 29. 



Genus Stylomyia, Westw. {Stylogaster, Wlk. nee Macq.) 



Corpus subelongatum capite thorace parum latiori, facie antice 

 dimidio supero carinato, dimidio infero valde concavo. An- 

 tennce porrectce articulo basali minimo, 2do obconico, 3tio sub- 

 ovali prcecedentis longitudine, vel prcecedenti multo longiori 

 compresso parum curvato, arista versus apicem marginis superi 

 inserta, porrecta. Haiistellum capite et thorace conjunctim 

 triplo longius, porrectum, in medio geniculatum, dimidio basali 

 parum dejlexo et ad ejus apicem crassiori, dimidio ajncali 

 valde incurvato. Thorax brevis quadratus. Abdomen supra 

 subconvexum parum curvatum, apice pone segmentum bum in sty- 

 lum elongatum {longitudine quinqne articulorum prcecedentium 

 cBqualeni), deflexum valde angustum, contracto, hujus styli 

 apice supero in uno sexu, oblique truncato ; seta elongata 

 supra hirsuta, lobo breviori compresso filamentisque duobus 



