CLASS V. INSECTA. 273 



anfenricE thicker towards their extremities, the first joint veiy long, 

 more so in the females and neuters : lahrum large, perpendicular, 

 corneous. 



These insects live in societies consisting of vast numbers. The 

 males and the females arc furnished with wings, the neuters being 

 apterous. 



Huber has written a work on the oeconomy of these animals. 



Genus 440. VOWSllCA. of untJtors. L.vsit;s. Fabi\ 

 Feduncic of the abdomen formed of one simple scale: sting not puncto- 



rious : poisonom glands in the female and neuters : untcnnce inserted 



in the front. 

 Sp. 1. For. lu'rcnhtnca. 

 Formica lierculanea. Lair., T^^ac/i. 

 Inhabits woods, building a large nest with bits of sticks. 



Fam. X. MuTiLLAD.T. Leach. 

 Mi'TiLi.ARi.i:. iMtreille. 



Head large : abdomen somewhat conic or ovoid : tibia spinose : maxil- 

 larii palpi as long or longer than the maxillje : antennae filiform, in- 

 serted in the middle of tiie face, longer than the head, the first 

 joint not receiving the second : superior wings with three submar- 

 ginal cells. 



The insects of this family are solitary. The males arc winged, 

 the females apterous, and there are no neuters. 



Genus 441. MUTILLA. Linn., Fabr., Panz., Jurine, Illig., Spi- 

 nola, Leach. Sphex. De Gecr. Apis. Christus, Ha?'ris. 

 Abdomen (of both sexes) ovoid and convex ; the second segment large, 

 somewhat campanulated : thorax of the females cubical, with no 

 transverse sutures. 

 Sp. 1. Mat. Earoptra. Linn., Fabr., Panz,, Latr., Leach. 

 Inhabits sandy places. 



Genus 442. MYRMOSA. Latr., Jurine, Panz., Leach. Mvtuaa. 

 Rossi. Hyl.eus. Fabr. 

 Abdomen depressed, elliptic in the males, conic in the females: thora.v 



composed of two segments, the anterior segment transverse. 

 Sp. 1. Myrm. melanoccpltala. 

 Myrmosa melanocephala. Latr., Leach. 

 Inhabits • — 



Subdivision 2. — Ocelli distinct, smooth: wings never wanting. 



Fam. XI. ScoLiAD.i;. Leach. 

 ScoLiET,?:. JMtreille. 



Thorax with the first segment transverse-quadrate, or forming an arc : 

 feet short, or moderately long ; the hinder ones thick, spinulose, or 



