12 
T. D. A. COCKERELL. 
Chalcobombus humilis sp. nov. 
J. Black, about 8V 2 mm long; abdomen with a sericeous lustre 
and a decided green tint, with the hind margins of the segments 
broadly reddish; hind coxa with crimson-metallic tints; hair of head 
and thorax above short and black ; . 
vertex and front dull, with sparse \ 
short coarse erect black bristles, 
which are sparingly plumose; 
second antennal joint barrel- 
Fig. 6. 
Chalcobombus humilis Ckll. 
Spur of anterior tibia, and comb of 
basitarsus. 
Fig. 7. 
Chalcobombus humilis Ckll. 
Hind basitarsus, and comb like structure on apcx 
of hind tibia. 
shaped, 170 u long and about 136 broad; flagellum about 1955 p long 
and 187 thick; wings dark fuliginous throughout. Distance between 
eyes in region of ocelli 1462 p. 
Another specimen, referred to the same species, has the flagellum 
2125 p long. 
Prussian amber. 
Chalcobombus hirsutus sp. nov. 
Compact, black, about 8 mm long, similar to C. humilis , but 
head and thorax above with long hair, that on scutellum about 612 p 
long, and sparingly plumose; this hair is white or yellowish-white, 
with brownish hairs intermixed. The face is much broader than in 
C. humilis ; at the vertex the breadth is about the same in both, but 
the face widens below in hirsutus , and rather narrows in humilis. 
The hind margins of the abdominal segments are not reddish. The 
hind basitarsus is formed as in C. humilis. 
Ocelli large in a slight curve ; antennae close together (340 p 
between sockets), comparatively long, flagellum about 2550 p long and 
