Wasps of the Genus Tachytes. 21 
20. Tachytes bimetallica, sp. n. 
2. Nigra; tarsis ferrugineis, articulo basali infuscato; calcaribus 
ferrugineis; tegulis segmentisque abdominalibus margine apicali 
brunneo-testaceis; alis hyalinis, venis testaceis ; clypeo, fronte, 
pygidioque argenteo - pubescentibus ; thorace cinereo - hirsuto ; 
segmentis dorsalibus 1-5 pallide aureo-pubescentibus, 
Long. 13 mm. 
2. Clypeus subtruncate at the apex, with three minute 
teeth on each side. Vertex very minutely and closely 
punctured ; eyes separated on the vertex by a distance equal 
to the combined length of the two basal joints of the 
flagellum. Median segment scarcely half as long again 
as ‘the scutellum, with a distinet longitudinal sulcus on tite 
dorsal surface. Basa] joimt of the fore tarsus with five 
spines; fore tibia with a row of five very long spines; spur 
of hind tibia as long as the basal joint of the hind tarsus. 
Pygidial. area triangular, narrowly rounded at the apex. 
‘third and fourth sternites shining and sparsely punctured 
in the middle. 
Hab. Cape, Hex River (South African Museum), January. 
Nearly allied to aurichalcea, but differs in the colour of 
the pubescence on the thorax and pygidial area, and in the 
number of spines on the fore metatarsus. 
21. Tachytes merens, sp. n. 
Q. Nigra, albo-pilosa ; calearibus spinisque tarsorum ferrugineis 
fronte clypeoque albido-pilosis; segmentis dorsalibus 4 fascia 
apicali interrupta argenteo-pubescente, area pygidiali basi fusco, 
apice aureo-setosa ; alis fuscis, venis nigris, 
Long. 17-20 mm. 
?. Clypeus clothed with long silver hairs, which change 
to dull brown in some lights; the extreme apical margin 
narrowly depressed, subemarginate at the extreme apex, 
with three rather ill-defined teeth on each side. Lower 
part of the front clothed with long silver hairs as on the 
clypeus; vertex very distinctly and rather sparsely punc- 
tured. Eyes separated on the vertex by a distance equal to 
the combined length of the two basal joints of the flagellum ; 
antennze short and stout. Thorax minutely and very closely 
punctured, the punctures distinctly separated, median seg- 
ment more closely punctured, the pubescence cinereous. 
Abdomen shining, the dorsal surface closely and minutely 
punctured; the fifth segment more distinctly punctured, 
