BOMBUS. 
307 
tt Not 'parasitical. Collectors of pollen. 
J Temporarily social. 
Genus 26. Bombus, Latreille. 
(Plate XY. figs. 3 and 4, and Plate XYT. figs. 1, 2, 3.) 
Apis ## e 2, Kirby. 
Gen. Char. : Body densely hirsute. Head small, sub- 
globose, not so wide as the thorax; the vertex glabrous, 
with a longitudinal, short, deep channel, crossed in its 
centre by a deeper transverse one, wherein the ocelli are 
disposed in a very slightly curved line; antennae short, 
geniculated, and filiform; the scape half as long as the 
flagellum, the first joint of which is globose, the se¬ 
cond subclavate, the rest short and subequal, and the 
terminal one compressed laterally; face flat, densely 
pubescent; clypeus subtriangular, gibbous, its base trun¬ 
cated, and ap£x convexly lobated, or straight and mar¬ 
gined; labrum lunulate; mandibles broad at the base, 
and obscurely tridentate; cibarial apparatus moderate; 
tongue twice the length of the labium, clothed with pu¬ 
bescence to within a brief distance of its apex, and ter¬ 
minating in a small knob; paraglossae about one-fourth 
the length of the tongue, coadunate at the base, and 
acuminate; labial palpi three-fourths the length of the 
tongue, broad at the base, and tapering to the extremity 
of the acute apex of the second joint, which is about 
one-fifth the length of the first, the two terminal joints 
very short and articulated laterally just before the 
end of the second; labium one-half the length of the 
tongue, broadest at its base, and acutely produced in the 
centre of its inosculation; maxillae as long as the tongue, 
subhastate and acuminate; maxillary palpi two-jointed, 
short, sometimes equal, and slightly robust, or with the 
x 2 
