218 Mr. E. Saunders' Synopsis of British 



Antennae 10-jointed in the ^ 12-jointed in ? and ^ ; 

 labial palpi 3-jointed ; maxillary palpi 6-jointed ; front 

 wings with one marginal, one submarginal, and one 

 discoidal cell ; metathorax with two spines in the 2 and ? ; 

 merely trmicate and angulated in the ^ ; ? nearly twice 

 the size of the ^ , and considerably larger than the ^ . 



1. ccespitum, Linn. Sj^st. Ent. ed. x. vol. i. p. 581. 



(? brown-black, shining ; head much narrower than 

 thorax ; antennae and legs paler ; head finely and longi- 

 tudinally rugose on the vertex ; thorax shining, clothed 

 with scattered hairs ; nodes of the petiole short, the 

 second widely transverse, both more or less hairy above ; 

 abdomen polished and shining, with a few scattered pale 

 hairs ; wings milky white, nervures pale. Length 

 6—7 mill. 



? larger than the S" ', head as wide as thorax, or 

 nearly so ; mesothorax irregularly punctured ; apex 

 of the metathorax emarginate and spined at each side ; 

 abdomen oval, shining and polished, with pale scattered 

 hairs ; wings as in the c? . Length 7 — 8 mill. 



^ dark brown ; thorax, sides of head, antennae, 

 mandibles, and legs somewhat paler. Head large and 

 quadrate, decidedly wider than the thorax, longitudinally 

 striate ; thorax longitudinally striate, much widest in 

 front ; metathorax with two sharp spines. Nodes of the 

 petiole much elevated, smooth ; first, looked at sideways, 

 almost as high as long ; looked at from above, not quite 

 so wide as long ; second, looked at sideways, nearly 

 round ; looked at from above, transverse. Abdomen 

 shining and polished. Entire insect clothed with scat- 

 tered long hairs. Length 2 — 4 mill. 



Hah. — Sandy localities ; often very abundant. 



Leptothorax, Maijr. 



Form. Austr. p. 159. 



This genus consists of three species only in England, 

 which have the peculiarity of having their hairs clavate 

 in the $ and ^ , a character easily seen with a 

 strong lens. The ? is small, scarcely larger than 

 the ? ; the <? is also small, with 11- or 13-jointed 

 antennae ; the frontal area not clearly defined. Labial 

 palpi 3-jointed ; maxillary palpi 5-jointed. 



