220 Mr. E. Saunders' Synojysis of British 



lengths, the following four are thicker and longer, and the 

 apical joint is almost longer than the two preceding 

 together ; thorax in front of the converging lines smooth 

 and shining, behind finely and longitudinally rugose ; 

 metathorax finely rugose, and with two small tubercles ; 

 abdomen shining, the nodes of the petiole smooth above. 

 Length 2 mill. 



? testaceous, club of the antennfe of the same 

 colour ; abdomen black-browTi, with the base of the first 

 segment widely, and of the following more or less 

 narrowly, testaceous. Head and thorax longitudinally 

 striate, clothed with scattered club-shaped hairs ; thorax 

 as wide as the head ; wings slightly milky, nervures very 

 pale ; metathorax with two sharp spines, very wide at the 

 base ; abdomen shining, clothed with scattered hairs. 

 Length 5 mill. 



? differs from the ? only in having the thorax 

 much narrower than the head and constricted in the 

 middle, its surface rather more rugosely striate, and 

 the spines of the metathorax rather longer, and in being 

 smaller in size. Length 2 mill. 



Hah. — Not common. I have taken it by sweeping at 

 Chobham and at Wimbledon, but only in solitary speci- 

 mens. 1 have compiled the description of the <? from 

 Mayr's ' Formicina Austriaca.' 



3. nnifasciata, Ltr. Ess. I'Hist. Nat. Fourm. Fr. p. 47. 



Very like the preceding, of which Messrs. Forel and 

 Emery consider it a race, putting them both together 

 under the name tuhernm, Nyl. 



The (? may be known from that sex of Nylanderi by 

 having the thorax in front of the converging lines rugose ; 

 the 2 and ? by having the apex of the antennae dark 

 dark brown, and the black bands of the body narrower, 

 often wanting, except on the basal segments. 



Hah. — Eare. Sherborne, Dorset, C. W. Dale ; and 

 Ventnor, Isle of Wight, taken by myself. 



SOLENOPSIS, West. 



Ann. Mag. Nat. Hist. 1840, t. vi. p. 86. 



Diplorhoiitrum pars. Smith. 



This genus may be easily known from any other British 

 one of this group. The ^ has the mesothorax without 



