Wasps of the Genus Tachytes. 13 
7. Tachytes neavei, sp. n. 
36. Niger; mandibulis in medio, tegulisque apice fuscis; tarsis 
fusco-ferrugineis ; segmentis abdominalibus margine apicali 
brunneis, segmentis dorsalibus dense aureo-sericeis, fasciis 
apicalibus distinetis; alis subhyalinis, margine apicali leviter 
infumatis, venis ferrugineis. 
Long. 18 mm. 
3. Clypeus broadly subtruncate at the apex ; eyes very 
close together on the vertex, separated by a distance not 
exceeding the length of the first jot of the flagellum. 
Front and clypeus clothed with whitish pubescence. Second 
joint of the flagellum longer by about one-quarter than the 
third, joints 3-7 very distinctly arcuate beneath. Thorax 
clothed with greyish mingled with pale fulvous hairs, the 
punctures very minute. Median segment shorter than the 
mesonotum, but nearly twice as long as the scutellum. 
Second sternite very closely and finely punctured, more 
strongly in the middle than on the sides. Seventh tergite 
very broad, nearly as broad as the greatest length, very 
broadly rounded at the apex, rather thinly clothed with pale 
golden setz, each of which springs from a large puncture ; 
eighth sternite broadly and shallowly emarginate at the 
apex, the angles not forming distinct teeth. Third cubital 
cell not extending as far as the radial, scarcely more than 
half as long on the cubitus as the second, third abscissa of 
the radius a little longer than the second, about equal to the 
first. 
Hab. Lualaba River, 2500-4000 ft. (S. 4. Neave), May. 
The eyes are even closer together on the vertex than in 
observabilis, but the anal segments are nearer to mira, 
though the seventh tergite is less distinctly rounded, and 
the eighth sternite less deeply emarginate than in that 
species. In the arcuate joints of the flagellum it differs 
from both species. 
8. Tachytes velox, Sm. 
Tachytes velox, Sm. Cat. Hymen, B.M. iv. p. 301 (1856). 
9. Closely resembles 7. basilica, with which it occurs ; 
but the antenne are black; the abdominal segments are 
black, very narrowly brown on the apical margins, and the 
legs are black with the apical joints of the tarsi fusco- 
ferruginous. Eyes separated on the vertex by a distance 
equal to the length of the two basal joints of the flagellum ; 
