Wasps of the Genus Tachytes. 25 
subopaque, finely and closely punctured; seventh dorsal 
segment rather long, rounded at the apex, and clothed with 
pale golden pubescence ; eighth ventral segment rounded 
at the apex. 
Hab. British East Africa, Kuja Valley, S. Kavirondo, 
4000 ft. (S. A. Neave), April; Masai Reserve (7. J. Anderson), 
April. ; 
Near 1. dilaticornis, Turn., but differs in the structure 
of the antenne, the greater distance between tlie eyes, the 
uarrower apical segments, and the colour of the wings. 
27. Tachytes nudiventris, sp. n. 
@. Nigra; fronte clypeoque pallide fulvo-pilosis; thorace seg- 
mentoque mediano sparse griseo-pilosis; abdomine nude, nitido ; 
alis hyalinis, flavo suffusis, venis fuscis; area pygidiali nigro- 
setosa ; palpis testaceis. 
6. Femine simijlimus. 
Long., 9 15 mm., ¢ 14 mm. 
?. Clypeus finely and closely punctured, broadly rounded 
at the apex. Lyes separated on the vertex by a distance 
equal to the combined length of the first and second joints 
of the flagellum. Thorax and median segment opaque, very 
finely and closely punctured, rather more sparsely on the 
scutellum than elsewhere ; the median segment as long as 
the scutellum and postscutellum combined, rounded at the 
posterior angles, very steeply sloped posteriorly, with a 
narrow aud shallow median sulcus broadening on the apical 
third and continued more deeply on the apical truncation. 
Abdomen shining, minutely puuctured, the segments without 
apical bands of pubescence; second sternite closely and 
minutely punctured, with an arched row of large punctures 
before the apex. Pygidial area broad at the base, narrowly 
rounded at the apex, subtriangular, clothed with black sete. 
Basal joint of the fore tarsi with six short and stout spines. 
Second and third abscisse of the radius almost equal, the 
distance between the recurrent nervures on the cubitus equal 
to the second abscissa of the radius. ‘I hird cubital cell 
long and narrow, the apex on the cubitus reaching nearer 
to the margin of the wing tban the apex of the radial 
cell. 
¢. Seventh tergite small, rather. narrowly rounded at 
the apex ; eighth sternite about half as long egain as broad, 
narrowly and not very deeply incised at the apex. Galea 
rather short and broad, not rostrate. 
