vul BOMBUS SOROENSIS 163 
or no trace of yellow. Thorax black, with a yellow 
band in front. Abdomen black, with the Ist and 2nd 
segments yellow, but usually some black at the base of 
the Ist segment, and with the tail colour, which commences 
on the 4th segment, sometimes entirely white, but often 
white with red at the base, or red grading into white at the 
tip. 
The hind metatarsi are slender and taper gradually towards 
the base, where they are very slender. By this character the 
male of soroéusts may 
be easily known, the 
metatarsi being approxi- 
mately parallel-sided up 
to within a short dis- 
tance of the base in all 
the other species ex- 
cept ¢errestris, lucorum, 
and cullumanus: in these 
three the metatarsi are 
wider, and are fringed 
with shorter hairs than lucorum, male; (6) soroémsis, male; (c) 
IN SOvOEHSTS. pratorum, male. 
Antenne with the 
3rd joint shorter than the 4th; in ¢errestrzs and lucorunt 
the 3rd joint is longer than the 4th. Length of flagellum 
54 mm.,, thus slightly longer than in ¢errestris, lucorum, 
and pratorum. 
Armature distinct. 

Fic. 26.—Hind metatarsus of (a) terrestris and 
In Britain B. soroéuszs is local and often rare. 
The workers were taken abundantly at Ilfracombe 
on bramble blossom by the late Edward Saunders. 
The queens have been found in considerable num- 
bers by Mr. E. B. Nevinson at Abersoch, on the 
south coast of Carnarvonshire, at the flowers of the 
raspberry in the beginning of June. Mr. Nevinson 
has also taken it at Criccieth, Bude, and in 
