63 LINNEAX SYSTEM. 



Avithout teeth : lip cylindrical, emarginated, horny, and nicndjrana- 

 ceoit* at the apex: palpi lour, unequal, tiliforni : a/itciiiuc h^ctaceous. 

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

 or pupae, which are there hatched : the larvaj have no feet ; they are 

 soft and cylindrical, and feed on the suhstance of tlie caterpillar; this 

 last continues to feed, and even to undergo its change into a chrysalis, 

 but never turns to a perfect insect : when the larvje of the ichneumon 

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

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

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

 Sp. 1. J. ManiJ'estutor. {PL 8. Jig. 4.) 



Genus 64. Sphex. 



2[out/i with an entire maxilla: a horny, incurved, dentated mandible: 

 a horny lip, membranaceous at the apex : palpi lour : anicnnc: 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 

 previously deposited her eggs. 



Sp. 1. S. sabiilosa. (PL 8. Jig. 5.) 



Inhabits sand-banks: is common in Norfolk, Sufiblk, and the Hamp- 

 shire coast, in June and July. 



Genus 65. Chrysis. 



Moullt horny and porrected : the maxillcc linear, much longer than the 

 lip which is emarginated : palpi four, unequal and tiliform : antenna' 

 filiform, the first articulation the longest, the remainder short: boclj/ 

 shining and finely punctured, tlie abdomen arched underneath; the 

 extremity, in most species, dcnlated : the sting somewhat cxserted : 

 wings not folded. 

 The species of this genus inhajjit 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. {PL 8. Jig. 7.) 



Genus 66. Vespa, Wasp. 



Mouth horny ; tnaxilhe compressed ; palpi four, unequal and filiform : 



antenna: filiform, the first articulation the longest, and cylindrical ; 



ei/es shaped like a crescent; bod^ smooth; the sting hid within the 



abdomen ; the upper u^ings folded in both sexes. 



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

 have naked wings, particularly bees and flies; the larva is soft and with- 

 out feet; the pupa is motionless. Vv'asps make a hive of a substance 

 like paper formed of wood reduced to a paste; the combs are horizontal, 



