ORDER V. IIYMENOPTERA. 67 



is often exserted, and with which the eggs are deposited either in the 

 bodies of the caterpillars of other insects, or in wood. From these eggs 

 the larvce are produced, which in some have no feet; in others more 

 tlian sixteen. They change to pupa incomplete, which are inclosed in 

 cases. Some of the insects of this Order live in societies, others are 

 solitary. 



Genus CO. Cvnips. 



Arouth with a short membranaceous maxilla with one dent : an arched 



horny mandible cleft at the apex : a short, cylindrical, entire, horny 



lip: four short imequal /)(///;/ : antcnncE moniliform, aculeus spiral, and 



in 2;eneral hidden within the body. 



The Cj/)iipcs pierce the leaves, &c. of plants with their sting, and de- 

 posit their eggs in the wound; the extravasated juices rise round it and 

 form a gall, which becomes hard, and in this the larva lives and feeds, 

 and changes to a pupa. 

 Sp. 1. C. Que reus folii. (PI. 8.fg. 1.) ' 



The larva is found in galls, adhering to the under side of oak leave?, 

 of the size of hazel-nuts. 



Genus 61. Tenthredo. 

 Mouth with a horny arched mandible, dentatcd within : maxilla: obtuse at 



the apex: //)> cylindrical andtritid: 2)(tlpi four, unequal, and iiliform. 



The larvcE of the insects of this genus have from sixteen to twenty- 

 eight feet; a round head: when touched they roll themselves together. 

 Tliey feed on the leaves of plants. When full-grown, they make, some- 

 times in tiie earth and sometimes between the leaves of the plant on 

 which they feed, a net-work case, and within it change to a pupa in- 

 complcta, which for the most part remains during the winter in the 

 earth. The species are very numerous, and consist of many natural 

 genera. 



Sp. 1. T. Serophularia:. {PI. 8. Jig. 2.) 

 Inhabits the Water Betony. 



Genus 62. Sirex. 



Mouth with a thick, horny mandible, truncated at the apex, and denti- 

 culated : an incurved, acuminated, cylindrical, ciliated maxilla, and a 

 lip, both oithem membranaceous and entire ; the whole short: palpi 

 four, the hind ones the longest, increasing towards their apex : an- 

 tenuff filiform, with more than twenty-four equal articulations: ovi- 

 duct exserted, stiff, and serrated : abdomen sessile, terminating in a 

 point or spine : wings lanceolated, and not folded. 



Sp. 1. S. Gigus. {PI. 8.fg 3.) 



Genus 63. Ichneumon. 

 'Mouth with a straight membranaceous, bifid maxilla, rounded at the 

 apex, dilated, ciliated, and horny: an arched, acute, horny mandible, 



e2 



