68 LIKXKAN SYSTEM. 



without teeth: lip cyhndrical, cmarginated, horny, and membrana- 

 ceous at the apex: palpi four, unequal, fihform : antennce setaceoi\s. 

 The insects of this genus lay their eggs in the bodies of caterpillars 

 or pupff, 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 larvc? of the ichneumon 

 are full grown they issue forth, spin themselves a silky web, and change 

 into a pupa incompleta, and in a few days the fly appears. The genus 

 is very numerous, upwards of 800 species are found in this counuy. 

 Sp. 1. I. Manifestator. {PL S.fig. 4.) 



Genus 64. Spiiex. 



Mouth with an entire maxilla: a horny, incurved, dentated mandible : 

 a horny lip, membranaceous at the apex : palpi ibur : antemuc fili- 

 form : the aculeus or sting 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, and lives in the bodies, of dead insects in which the mother had 

 j)reviously deposited her eggs. 

 Sp. 1. S.sabulosa. {Pl.S.fg. 5.) 



Inhabits sand-banks: is conmion in Norfolk, Suffolk, and the Hamp- 

 shire coast, in June and July. 



Genus 65. Chrysis. 



Mintlli homy and porrected: the maxilla linear, much longer than the 

 /t/> which is emarginated : palpi four, unequal and filiform : antenn,t 

 filiform, the first articulation the longest, the remainder short: torfy 

 shining and finely punctured, the abdomen arched underneath; th(? 

 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. bidentata. {PI. B.jig. 7.) 



Genus 66. Vespa, Wasp. 



Moulh horny; maxilhe compressed; palpi four, unequal and filiform ; 



untc7in(C filiform, the first articulation the longest, and cylindrical ; 



eyes shaped like a crescent; boih/ smooth; the sting hid within the 



abdomen ; the upper icings folded in both sexes. 



The insects of this genus live in society; they prey on insects that 

 liave naked wings, particularly bees and flics; the larva is soft and with- 

 out I'ect; the pupa is motionless. Wasps make a hive of a substance 

 like paper formed of wood reduced to a pa'>tc; tlic combs are horizontal. 



