32 MYRMICA WESTWOODII. 



situation. It may be an imported species, but I have not seen 

 any foreign examples. 



STENAMMA, Westw. 



The maxillary palpi 4-jointed ; the labial palpi 3-jointed ; 

 mandibles dentate ; the second node of the petiole spined in 

 front beneath ; the club of the antennae 3-jointed ; the anterior 

 wings with the marginal cell open, one complete submarginal, 

 and one discoidal cell. 



11. Myrmica (Stenamma) Westwoodii. 

 Fcemina. Sordide rufa, Isevis, nitidissima ; capite supra et tho- 



race dorso fuscescentibus ; abdomine fusco-nigro ; spinis me- 



tathoracis brevibus. 

 Operaria. Rufa, Isevis, nitidissima ; abdomine basi (apice ex- 



cepto) fusco-nigro ; metathorace spinis duabus horizontalibus 



validiusculis. 

 Mas. Nign>fuscus, sparse pilosulus; mandibulis, antennis pedi- 



busque pallescentibus ; metathorace spinis duabus brevibus ; 



alis hyalinis. 



Stenamma Westwoodii, Steph. Westw. Intr. Class. Ins. ii. 226. t.86. 



f.ll. 

 Myrmica nitidula, Nyl. Addit. Adno. Mon. Form. Bor. Eur. p.1058; 



Addit. Alt. p. 34 ; Form. Fr. et d'Alger. p. 94. 22. 



Foerst. Hym. Stud. Form. p. 55. 28 $ . 

 Myrmica laeviuscnla, Foerst. Hym. Stud. Form. p. 54. 27 ? . 

 Myrmica debilis, Foerst. Hym. Stud. Form. p. 52. 25 $ . 

 Formicoxenus nitidulus, Mayr, Form. Austr. 146. 1. 



Female. Length 2 lines. Rufous, sometimes pale red, very 

 smooth and shining ; head, thorax, and middle of the abdomen 

 more or less fuscous ; the head delicately striated longitudinally; 

 the metathorax with two short acute spines ; the wings hya- 

 line ; the second node of the petiole spined beneath. 



Worker. Length 1 J line. Pale rufous, smooth and shining ; 

 the head slightly fuscous above, frequently of one uniform 

 colour; the metathorax with a smooth central depression, on 

 each side of which is a stout horizontal tooth ; abdomen some- 

 times nigro-piceous in the middle ; the first node of the petiole 

 with a cariniform process beneath, the second node with a stout 

 spine at its base directed forwards. 



Male. Length 2 lines. Nigro-fuscotis ; the mandibles triden- 



