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UNITED STATES NATIONAL MUSEUM BULLETIN 224 



extended chiefly forward. These arise from the dorsal 

 base of the gibbosity leaving only the sides without 

 them ; they continue down along the lateral margin of 

 the subepistoma; the anterior middle elements are a 

 little stouter. Front long, pollinose, with a row of 3 

 or 4 slender bristles along the eye margin and a double 

 sublateral row of 9 longer, a little stouter bristles. Ver- 

 tex moderately excavated but narrow with vertical 

 sides, the ocellarium is set anteriorly forward, large but 

 low, with 4 or 5 pairs of long, slender bristles between 

 the ocelli and at least as many equally long bristles be- 

 hind the ocelli. Anterior eye facets strongly enlarged. 



Thorax: The thorax is pollinose; the pile of the 

 mesonotum is scanty but i-ather long, exceptionally fine 

 and bristly with the acrostical pile and the dorsocentral 

 pile similar; the latter begins to be differentiated be- 

 hind the humerus ; the first 5 elements are no more than 

 hairs, the posterior 7 elements are slender bristles. The 

 long, moderately stout bristles laterally consist of 2 

 notopleural, 1 supraalar, 2 postalar, 3 pairs of scutellar 

 bristles. Scutellum only a little thickened but convex, 

 with a shallow, impressed rim. Propleuron with fine, 

 abundant, long pile; pronotum with 5 or 6 slender 

 bristles; posterolateral propleuron with numerous, 

 bristly hairs only. Upper mesopleuron with a long 

 fringe of bristly hairs; middle and anterior sterno- 

 pleuron with some long pile. Pteropleuron with a 

 rather large patch of long pile and bristly hairs. Post- 

 hypopleuron with 3 long, slender bristles and 4 equally 

 long hairs in a vertical row. lletapleuron with a verti- 

 cal row of 7 long, slender bristles and other bristly pile. 

 Lateral slopes of the metanotum with a conspicuous 

 patch of bristly pile. Sides of the metasternum and the 

 ventral metasternum with long, fine pile; postmeta- 

 coxal area membranous; tegula without setae; the 

 posterior basalare with 5 or 6 bristly hairs ventrally ; 

 anterior basalare pubescent only; squama with a 

 multiple fringe. 



Legs : The legs are comparatively slender ; femora at 

 most moderately stout; the anterior femur is a little 

 thickened dorsally and with rather scanty, fine, ap- 

 pressed pile dorsally, laterally, and anteriorly. On 

 the hind femur there are 4 lateral bristles with a dorso- 

 lateral at the outer sixth, another at the apex, with a 

 similar dorsomedial, also with 5 ventrolateral, 4 long, 

 slender ventral and almost no ventral pile; the medial 

 pile is short and comparatively scanty. Hind tibia with 

 1 long, stout dorsomedial in the middle and 3 dorso- 

 lateral, 1 near the base, and 2 ventral bristles; apex 

 with 3 ventral, 2 lateral, and 1 dorsolateral bristle. 

 Middle femur with 6 anteroventral bristles, 1 stout an- 

 terior bristle just beyond the middle, 1 weak apical 

 anterior, and 2 apical posterodorsal bristles; middle 

 tibia with 2 anterodorsal bristles, 2 posterodorsal 

 bristles and 2 rather long, stout posteroventral, 2 an- 

 teroventral bristles foimd on the outer half. Anterior 

 femur with 1 dorsal row of 5 slender bristles and 3 or 4 

 additional, basal, bristly hairs, besides a ventral fringe 

 of long, fine pile in scanty quantity. This tibia bears 



extremely weak dorsal bristles but the posteroventral 

 bristles are long and strong; there is 1 basal antero- 

 ventral which may be doubled, and there are 6 or 7 

 short, posterodorsal, .4 postei-o ventral bristles. Tarsi 

 end in slender, sharp claws, cm-ved abruptly at the 

 apex, long pulvilli and slender empodium, which is a 

 little flattened. 



Wings : The marginal cell closed with a very short 

 stalk; the subcostal cell is quite narrow at the expense 

 of the marginal cell ; the costa not expanded. Marginal 

 and submarginal cells rippled ; the anterior branch of 

 the third vein ends a short distance above the wing 

 apex ; the posterior branch ends a little greater distance 

 behind ; second submarginal cell arises at the end of the 

 discal cell. Second posterior cell rather strongly 

 widened at the base; the lower vein at the end of the 

 discal cell is quite long and drawn back towards the 

 base. Fourth posterior cell closed with a short stalk ; 

 anal cell closed shortly, second basal cell ends in 2 veins, 

 alula large, the ambient vein complete. 



Abdomen : In the male the abdomen is cylindrical, 

 in the female it is rather flattened on the first four or 

 five tergites and in both comparatively robust, but not 

 quite as wide as the mesonotum. Sides of the first ter- 

 gite moderately protuberant. Pile of abdomen scanty, 

 fine, setate and appressed but the lateral margins of the 

 first three tergites bear a little, long, fine pile and all of 

 the sternites except the first have quite long, fine pile in 

 both sexes. Sides of the first tergite with 6 or 7 weak, 

 slender bristles. Posterolateral margins of all the ter- 

 gites in both sexes with a row of stiii', bristly hairs. 

 Eight tergites in the male, the last three rather short, 

 the eighth half as long as the seventh, of uniform 

 width ; the seventh is half as long as the sixth, the sixth 

 about two-thirds as long as the fifth. Female with 

 seven tergites, the eighth and beyond incorporated in 

 the ovipositor. Male terminalia large, wide, the supe- 

 rior forceps massive, curved toward the middle apically 

 and with a short, ventral process. Gonopod equally 

 massive but shorter, curved upward. What appears to 

 be the hypandrium is long, smooth, ventrally flattened 

 and polished in the male. Female with the ovipositor 

 short, strongly compressed laterally ; the eighth tergite 

 is barely longer than the seventh. The ninth and tenth 

 segments are comparatively rather long, but the tenth 

 a little shorter, both thrust downward as in Senopro- 

 sopis Macquart. 



Distribution: Ethiopian: Dinozdbrus hicolor, new 

 species. 



Dinozabrus bicolor, new species 



Length 18 mm. Male, female. Head: Face and 

 front black with dense, coarse, yellowish pubescence. 

 All the bristles of the face are black; the inner row 

 along the epistomal margin is yellow; pile of the oc- 

 ciput is deep yellow, but the bristles on the dorsal half 

 and on the front and vertex black. Antenna quite 

 black with black bristles. 



Thorax: The pleuron and mesonotum black. The 

 mesonotum is dully shining with brownish black pollen 



