132 ORCHESELLA. 



Ilcterotoma villosissima, Gervais. His. Int. Apteres. 



— grisea, „ „ „ 

 Orchesella villosa, Nicolet. Mem, Soc. Ent. France, 1847. 



— histrio „ „ „ „ 

 Ifioioma villosa „ „ „ ,, 

 Orchesella piCosa, Lubbock, Trans. Linn. Soc, 1862. 



Plates Xy and XVI. 



Yellowisli-grey, sometimes with a tinge of green; 

 tlie body mottled, and the legs annulated with brown 

 or black. Basal segment of the antennsB pale ; second, 

 third, and fourth brown or black, but generally pale at 

 the two extremities ; the two terminal segments pale, 

 tinged with brown. Eyes on a black patch. Head 

 and thorax with numerous clubbed hairs; abdomen 

 more sparingly covered. 



Length, "25 of an inch. 



Sweden, France, Switzerland, England. 



I have some doubts whether this species is the 0. 

 villosa of JSTicolet, as the colouring of the legs and 

 antennge is altogether different. Nicolet also describes 

 his species as having scales, which are " incolores, 

 irregulieres et strices." Still, I have found our English 

 species in Switzerland, where it seems common, but I 

 have never met with any specimens in that country 

 corresponding to Nicolet' s description. 



The labrum is somewhat broader at the base than 

 at the free extremity, which ends in three not very 

 well-marked lobes on each side ; there is also a curved 

 row of teeth, which, however, do not meet in the 

 middle, nor project beyond the edge. 



The mandibles are powerful, and have respectively 

 four and five teeth, which are strong, though not very 

 sharp. In general form, and in the position and 

 arrangement of the molar surface, they are formed on 

 the type common to the family. 



The maxillge also resemble in general outline those 

 of the allied species. At their extremity is a row of 

 five processes. The three outer ones have the form of 

 strong teeth ; the two inner ones are pointed, tongue- 



