68 
1INNEAN SYSTEM. 
without teeth : lip cylindrical, emarginated, horny, and membrana- 
ceous at the apex: palpi four, unequal, filiform : antenna setaceous. 
The insects of this genus lay their eggs in the bodies of caterpillars 
or pupae, which are there hatched: the larvae have no feet; they' are 
soft and cylindrical, and feed on the substance of the caterpillar; this 
last continues to feed, and even to undergo its change into a chrysalis, 
but never turns to a perfect insect : when the lame of the ichneumon 
are full grown they issue forth, spin themselves a silky' web, and change 
into a pupa incompletely and in a few days the fly appears. The genus 
is very numerous, upwards of 800 species are found in this country. 
Sp. 1. I. Manifestatar. (VL S.fg. 4.) 
Genus 64. Sphex. 
Mouth with an entire maxilla: a horny, incurved, dentated mandible : 
a horny lip, membranaceous at the apex: palpi four: antenna fili- 
form : the aculeus or sling concealed within the abdomen. 
The insects of this genus form their cells in sand-banks, and they 
are occasionally found on umbelliferous plants ; the larva is soft, with- 
out feet, ami lives in the bodies of dead insects in which the mother had 
previously deposited her eggs. 
Sp. 1. S. sabulosu. (PL 8. Jig. 5.) 
Inhabits sand-banks : is common in Norfolk, Suffolk, and the Hamp- 
shire coast, in June and July. 
Genus 65. Chkysis. 
Mouth horny and porrected : the maxilla linear, much longer than the 
Up which is emarginated : palpi four, unequal and filiform : antenna 
filiform, the first articulation the longest, the remainder short: body 
shining and finely punctured, the abdomen arched underneath ; the 
extremity, in most species, dentated: the sting somewhat exserted: 
wings not folded. 
The species of this genus inhabit sand-banks, old walls, or decayed 
wood. They rarely appear but in the middle of the day, and then only 
when the sun shines. 
Sp. 1. C. biiknlata. {PL 8. Jig. 7.) 
Genus 66. Vespa, Wasp. 
Mouth horny ; maxilla compressed ; palpi four, unequal and filiform ; 
antenna filiform, the first articulation the longest, and cylindrical ; 
eyes shaped like a crescent; body smooth; the sting hid within the 
abdomen ; the upper wings folded in both sexes. 
The insects of this genus live in society; they prey on insects that 
have naked wings, particularly bees and flies; the larva is soft and with- 
out feet; the pupa is motionless. Wasps make a hive of a substance 
like paper formed of wood reduced to a paste ; the combs are horizontal 
