CLASS V. INSECTA. 273 



antennte thicker towards their extremities, the first joint very long, 

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

 corneous. 



These insects live in societies consisting of vast numbers. The 

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

 apterous. 



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



Genus 440. FORMICA of authors. Lasius. Fabr. 

 Peduncle of the ahdomcn formed of one simple scale: sting not pimcto- 



rious : poisonous glands in the female and neuters : antcnnes inserted 



in the front. 

 Sp. 1. Fo?-. hcrculanca. 

 Formica herculanea. Latr., Leach. 

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



Fam. X. MuTiLLADa:. Leach, 

 Mutillari.e. LatreiUe. 



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

 lary palpi as long or longer than the maxillae: antenntB fihform, in- 

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

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

 ginal cells. 



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

 the females apterous, and there are no neuters. 



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

 nola, Leach. Sphex. De Geer. Apis. Christus, Harris. ■ 

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

 somewhat campanulated : thorax of the females cubical, with no 

 transverse sutures. 

 Sp. 1. Mut. Europaa. Linn., Fal)r., Panz., Latr., Leach. 

 Inhabits sandy places. 



Genus 442. MYRMOSA. Latr., Jurine, Panz., Leach. Mutii.la. 

 Rossi. Hyl.t.us. Fabr. 

 Abdomen depressed, elliptic in the males, conic in the females: thorax 



composed of two segments, the anterior segment transverse. 

 Sp. 1. Mt/rm. melanocephala. 

 Myrmosa melanocephala. Latr., Leach. 

 Inhabits 



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



Fam. XL Scoliadje. Leach. 

 ScoLiET^. LatreiUe. 



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

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



