12 
Ichneumon of the caterpillar of the Cabbage Butterfly is. 
an example), and the Gall-flies or Cynipidce, of which good 
Marble Gall-fly (Gynips Kollari). 
examples may be found still in the ‘‘Marble Galls,” oig 
in spring, in the “ King Charles ” Gall of the Oak. These 
legless larvae are distinguished with ease from the larvae 
of Flies, or of Moths and Butterflies, but in many cases 
it is almost impossible to distinguish them from those of 
Beetles, and the student must either rear them through 
their second stages, or be guided by their locality, food,, 
and habits, or, better still, take counsel to learn their 
nature with certainty. The two remaining families of 
the Hifm,eno 2 )tera are of great interest—one including the 
great Wood-boring Grubs of the Sir ex {Uroceridee), we 
know by the long cylindrical larvae, with small heads, 
furnished with square horny-toothed jaws, and having a 
pair of very minute feet on each of the segments next 
to the head, also by the terminal segment of the body 
being enlarged and terminating in a sharp point. I need 
only ask your special attention in these dry details to one 
more family, and this still of the Jdiyinenoptera; it is 
that one equally ruinous at times to the farmer and the 
forester, that of the Tenthredinidce, including the various 
kinds of Sawflies. The larvse of these much resemble 
the Moth caterpillars, in being often gaily coloured, and 
have a head furnished with jaws and a pair of feet on 
