VIII BOMBUS fONLLL OS 167 
6. BOMBUS JONELLUS, Kirby. 
Heath Humble-bee. 
Synonym :—scrimshiranus, Kirby. 
QUEEN.—Small; length 15-17 mm., expanse 27- 
32 mm. 
The colouring is very like that of ortorumne. 
Face black, top of the head more or less yellow. 
Thorax black, with a yellow band in front and another 
behind. Abdomen black with the first segment, and 
generally the base of the second segment yellow, and 
with the fourth and following segments white, rarely 
cream-coloured, the white often beginning on the edge of 
the third segment. Hairs of the corbicula usually reddish : 
in ortorum they are entirely, or almost entirely, black. 
Head short, the length of the cheeks being not more than 
a third of that of the eyes. By this character this species 
may be easily distinguished from hortorum and ruderatus. 
WoRKER.—Length 10-14 mm. 
Resembles the queen except in size. 
MALE.—Length 12-14 mm., expanse 24-27 mm. 
Coloured like the queen, but the face is yellow and the 
black on the abdomen often extends on to the base of 
the fourth segment. 
Easily distinguishable from /ortorum by its short head, 
the length of the cheeks, as in the queen, being not more 
than a third of that of the eyes. It is also a smaller, 
less elongate insect than the male of /ortorum, and the 
antenne are decidedly shorter than in /ortorum, the length 
of the flagellum being only 5 mm. 
Armature like that of pratorum and lapponicus. 
B. jonellus is a local species, but commoner and 
more widely distributed in the north and west than 
in the south and east. It is rare in East Kent and 
