Wasps of the Genus Tachytes. 
6. Clypeus with three well-defined teeth 
on each side of the apical margin ; 
galea shorter than scape .......... 
Clypeus without clearly defined teeth ; 
galea much longer than scape ...... 
7. Eyes separated on the vertex by a distance 
not exceeding half the length of the 
second joint of the flagellum........ 
Eyes separated on the vertex by a 
distance slightly exceeding three- 
quarters of the length of the second 
joint of the flagellum . te Oe Ree ee 
8, Joints 3-7 of the flavellum aistinetly 
arcuate beneath ; eighth sternite shal- 
lowly emarginate, the apical angles 
distinctly produced. ...........06-: 
Joints of the flagellum not arcuate be- 
neath ; eighth sternite truncate, the 
angles not produced <..........64. 
9. Abdomen and the greater part of the 
antenne and legs ferruginous brown. . 
Black, the apical margins of the abdo- 
minal segments Brow Ai oid. te: 
10. Highth sternite tr uncate, the angles not 
‘produced saree Gare Paimw hota save la Wes 
Fighth sternite deeply emarginate, the 
‘angles strongly produced ....... : 
1. Wings black, flushed with blue or 
violet; abdomen black, without pubes- 
cent fastlior liv lads Pes Beata Bek 
Wings hyaline, subhyaline or flayo- 
hyaline, abdomen usually with pubes- 
COME TEAGUE, owe ce sede ses deern ys « 
12. Front and clypeus clothed with long 
IAG, HUIS vals ely en laleinuiay ox)s 2 hs: a 
Front and clypeus with short, sericeous, 
Silver PUDESEGHCD | Codwas tous veces 
13. Abdomen black, without pubescent 
PACU eaatert Ged a Pale obalein! sh dfata*erede! ] fas 
Abdomen with pubescent fascie, some- 
times Interrupted) ose 2 5. Yee ws 
14. Two basal abdominal segments red .... 
Basal abdominal segments black ..... ‘ 
15. Second to seventh joints of the flagellum 
strongly arcuate -dilatate beneath ; 
wings flavo-hyaline, pale fusco-hyaline 
apically from the second cubital cell ; 
pubescence of abdomen dense and 
golden, sparse golden pubescence on 
the sides of the mesonotum ........ 
Flagellar joints at most feebly arcuate 
beneath ; wings, if flavo-hyaline, 
without a fusco-hyaline broad 
TAVERN Pera tiel ha) nar'eh'e heb 0, aPe! whe a oe 
16. Galea very long, considerably more than 
twice as long as the scape.......... 
T. rhodesiana, Bisch. 
Fg 
10. 
T. neavei, Turn. 
9. 
T. basilica, Guér. 
T. observabilis, Kohl. 
T. velox, Sm. 
T. perornata, Turn. 
12. 
13. 
T. nigropilosella, Cam. 
T. natalensis, Sauss. 
T. nudiventris, Turn. 
14, 
T. ambidens, Kohl. 
15, 
T. dilaticornis, Turn, 
16. 
ive 
1# 
