THE ENTOMOLOGIST. 
419 
I have found it only once, when it occurred on a chalk down ; 
perhaps, like the neighbouring genus, Aspicoris, it is parasitic on 
Coccus. The insect figured below is closely allied to Eulophus, 
HEMIPTARSENTJS FULVICOLLIS. 
of which some species feed on the larvae of Lepidoptera : it is 
remarkable for its elegant and variable colouring. The species 
named H. Waterhousii seems to be one of the Eupelmidae. 
Fean cis Walkee. 
Life-history of Thecla W-Album .—The eggs are laid on 
the twigs of Ulmus campestris (elm) and LJlmus montana 
(wych-elm) in July and August; they are what astronomers 
call oblate spheroids, but are much more depressed on the 
crown than at the opposite extremity; they are of a whitish 
or putty-colour, and are firmly attached to the bark by the 
under side, and in this position they remain throughout the 
winter: the shell resembles porcelain in appearance, and it is 
insoluble in water ; it resists any amount of wet, and also effec¬ 
tually preserves the contained larva from the effects of frost or 
other climatic influences. The young larva emerges in April or 
