174 THE HUMBLE-BEE “ie 
The darkest specimens are entirely black.! This is the 
Apis harrisella of Kirby. 
The coat is slightly more even, slightly stiffer, and slightly 
shorter than in /ortorum, but markedly longer than in /atrez/- 
lellus. These coat-quality differences are most noticeable 
in the yellow hairs on the Ist segment when the latter 
are present. 
The head (viewed from in front) is very long in proportion 
to its width, less long than in /ortorum, but more so than in 
latreillellus, the cheeks being about half as long as the eyes. 
WorKER.—Length 11-18 mm. Banded specimens and 
entirely black specimens occur, but intermediately coloured 
specimens are seldom found, unless they are very large. 
The banded variety is coloured like the lightest variety 
of the queen, the only variation towards blackness usually 
met with being a slight narrowing and darkening of the 
yellow bands on the thorax and on the Ist segment of 
the abdomen; the latter band seldom disappears, and in 
all examples the tail remains white. 
The banded worker may be known from the workers 
of hortorum and latrezllellus by the characters given in the 
description of the queen, but separation is often difficult 
in the case of small and worn specimens. 
MALE.—Scearcely larger than hortorum; length 15-16 
mm., expanse 30-32 mm. Abdomen rather elongate. 
Banded specimens and entirely black specimens occur,’ but 
intermediately coloured specimens are rare. 
Banded specimens arecoloured like the maleof hortorum, 
but the sides of the thorax, under the wings, are more or 
less yellow, while in Zortorum they are usually black. The 
yellow bands are more sharply separated from the black 
than in fortorum; those on the thorax are broad, the 
posterior band being as broad in the middle as the 
band at the front; the yellow on the base of the abdomen 
is usually confined to the rst segment, but occasionally 
1 The only other British species that varies to entirely black is Psethyrus 
ampestris, p. 216. 
