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HOW TO COLLECT 
The grub-like larvse of Daddy-long-legs 
[Tipulidce and Limnobidce) live for the 
most part in rotten wood, in water, or in 
the soil. The grubs known as " Leather- 
jackets," so destructive to the roots of turf 
and sometimes to cabbages, are the larvse 
of Tipula paludosa, Mg. ; and T. oleracea, L. 
LIMNOBIA NUBECULOSA. 
The larvse of Stratiomyidce have a hard, 
armourplate-like integument, and live in water 
or in humus. 
STRATIOMYS FURCATA. 
The larvse of the Horse-flies {Tabanidce) and Robber-flies (Asilidce) 
are internal parasites of beetle larvse ; they are whitish, soft-bodied 
grubs, and in the case of the Asilidce are sometimes considerably 
elongated. At a later stage the larvse of Tabanidce have been found 
in earth or water, those of the Asilidce in earth or in rotten wood. 
The larvse of the Humble-Bee-flies (Bombylidce) are parasitic in 
the nests of solitary bees, or in the egg- capsules of locusts and 
grasshoppers. 
The habits of the larvse of the Syrphidce are exceedingly diversified ; 
those of the true Hover-flies (Syrphus) may be found on leaves 
infested with Aphidce, upon which they feed ; those of Volucella are 
inquilines in the nests of humble-bees and wasps ; the well-known 
" Rat- tailed Maggots " (such as the larva of the Common Drone-fly, 
Eristalis tenax, L.) — so called from the protrusible, telescopic, 
terminal segments of the body, which carry the breathing-tubes — 
live in decaying animal or vegetable matter in a liquid or semi- 
liquid state, in foul and stagnant water, drains, and similar places ; 
the larvse of other genera (e.g. Br achy palpus, Xylota, Calliprobola) 
live in rotten trees. The larvse of Syrpliidce in general (including 
