4 SUB-TRIBE CIMBIOTDES. 



its being raised to sub-family rank. But whether it 

 should form a family by itself or one along with 

 Syzgonia, Laboceras, and Cephalocera (which have also 

 been placed in the Cimbicina, or at any rate the two 

 former), the fact of its having the radial cell appendicu- 

 lated, there being also only one radial cellule, in its 

 wanting the lanceolate cellule, and having the tibiae 

 spined, the form of the saw being likewise different, 

 are sufficient grounds for ejecting both Perga and 

 Syzgonia (this genus having also these peculiarities) 

 from the Cimbicina. The American genera Thulia and 

 Acordulcera are by some authors united to the Cimbi- 

 cina, but they also may be excluded, as they have only 

 one radial cellule. 



That, however, the Gimbicides are more closely 

 allied to Perga and Syzgonia than to the Tenthre- 

 dina, there can, I think, be no doubt; this is shown 

 by the similarity of the form of the antennae and 

 thorax and by the neuration, especially of the form of 

 the accessory nervure in the posterior wings, which is 

 nearly the same in the three groups, only in Perga, 

 &c., the accessory nervure is apt to become obliterated 

 entirely. 



We may with Thomson divide the European species 

 into two sub-tribes the Cimbicides and Abiides. 

 Pachylosticta and Plagiocera will form another sub- 

 tribe allied to the latter rather than to the former. 



Sub-tribe CIMBICIDES. 



Body large (613 lines), hairy or pilose. Lanceolate cellule divided 

 by a straight cross-nervure ; first cubital cellule receiving both recur- 

 rent nervures. Mandibles large ; head swollen at the sides, projecting 

 beyond the eyes, which are small, parallel, and situated well in front. 

 Ualcana short, thick, membranous at the apex. Patellae well developed, 

 somewhat membranous. Palpi short, thick, the last three ioints stout 

 short. 



The larvae are well marked with coloured spots or 

 markings, and are green or blue, or more rarely reddish. 



