296 
SYSTEMATIC ARRANGEMENT 
about 200 different species inhabit this country. 
As an example of this order we have figured 
PHRYGANEA GRANDIS. 
Plate XXX. Fig. 1. 
Linn. De Geer , II. 388, PI. 13, fig. 1. Kirby and Spence's 
Introd . III. 68, PL 3, fig. 4. 
The upper wings are brownish grey, with cinereous 
spots, a longitudinal black ray and two or three 
white points at the extremity ; antennse as long as 
the body. Found plentifully in many parts of the 
Continent, and not unfrequently in Britain. 
Order VI. — Hymenoptera. 
The name of this order being derived from u/mjv, a 
membrane, is not distinctive, the wings of several 
other orders being likewise membranous. They are 
four in number, and of a uniform texture throughout, 
the upper pair being always larger than the under 
pair. They are permeated by a considerable num- 
ber of nervures, which usually radiate from the base, 
and form areas of greater or less extent over the 
surface, but these are never so small and numerous 
as to resemble the reticulated wings of the Neurop- 
tera. The mouth essentially consists of mandibles, 
maxillee, an under and upper lip, and palpi. The 
females are provided with an ovipositor, — sometimes 
resembling a pair of saws, and at other times assuming 
that modification of form in which it is named a sting, 
— and the tarsi are in most cases pentamerous. 
These general properties may suffice to separate 
