CLASS V. INSECTA. 
259 
®P- 1. Anax Imperator. 
Inhabits England in the New Forest of Hampshire. It is necessary to 
inform the young entomologist, that the insects of the first and se- 
cond stirpes of this family require, whilst in a recent state, that the 
contents of the abdomen should be extracted, and filled with either 
a piece of paper or cotton, rolled up as near as possible to the natu- 
ral size of the body, as without this precaution the insects will lose 
their colour and turn entirely black. For further directions see In- 
structions for Killing and Preserving. 
Stirps 3. — Wings erect: head transverse: abdomen cylindrie, linear: 
ocelli or little eyes placed in a triangle. 
, G enus 386. AGRION. Fabr., Lair., Leach. Libeelola. Linn. 
Mings membranaceous, with a rhomboidal stigma: abdomen of the 
male not armed with a forceps-like appendage. 
Sp. 1. Agrion sanguineus. 
Inhabits marshes. 
Genus 887. LESTES. Leach. 
Wings membranaceous with an oblong-quadrate parallelopiped stig- 
ma : abdomen of the male armed with a forceps-like appendage, 
/’!'• 1 . Lestcs autunmalis. 
Inhabits marshy places. 
Genus 388. CALEPTERYX. Leach. Agrion. Fabr., Latr. 
lt'n?gs coriaceo-membranaceous, without a real stigma, in place of 
which is sometimes an irregular transparent spot : abdomen, of the 
male furnished with a forceps-like appendage. 
Sp. j. Cal. Virgo. 
Inhabits the banks of rivers. 
Fam. II, Ephemeridae. Leach. 
Ephemerin.v.. L.a(reille. 
Tarsi four-jointed: mouth not distinct: inferior icings much smaller 
than the others, sometimes wanting : abdomen with the extremity 
furnished with filaments. Metamorphosis quadruple. 
SttRps 1 . — Tail with two filaments. 
Genus 389. BAETIS. Leach. Ephemera. X inn., Fabr., Lair. 
" mgs four. 
P- 1- Bdetis bioculata. 
Inhabits near water. 
Genus 390. CLOEON. Leach, 
Wings two. 
P' !• Clo. pallida. 
Phemera diptera. Linn., Fabr. 
nhabits Norfolk and Cumberland, near large pieces of water, 
