FORMICID.-E. 27 



or under stones ; it does not appear to ha,vho\n' ApliideK, but 

 one of our very rarest Coleoptera, MjnneJonia plicata, 

 has been found in its nests. 



T. erraticum, Latr. — ^ dark black brown, eyes situated 

 about mid-way between tbebase of the bead and tbe apex of 

 the mandibles ; vertex somewhat quadrate, autenuee very 

 long, joints of the flagellum sub-equal; wiugs hyaline, 

 nervures pale ; abdomen with a few scattered hairs above, 

 segments fringed beneath, apical one deeply emargiuate, 

 genital armature very large, dark like the rest of the body ; 

 legs paler, tibiiB clouded in the middle. 



$ about the same length as the ^, but wider aud flatter, 

 thorax very flat above. 



5 much resembling a very black shining Lasius niyer, 

 but the eye is placed much further from the back of the 

 head, and the notched clypeus and the absence of the petiolic 

 scale will distinguish it at once. The entire surface is 

 clothed with very fine adpressed hairs ; the tibiae are without 

 exserted hairs. 



L. c? ? 5-6 mm., ? 3-4 mm. 



Common in some localities, preferring dry heaths, c? and 

 ? appear about midsummer. Bournemouth ; Chobham ; 

 M'eybridge. Guildford ; Coombe Wood ; Shirley, and Bear 

 Croydon; Wareham ; Land's End; Scilly ; (Dale). Bovey, 

 South Devon ; {Bignell). 



PONERID^. 



Of this family we have only one genus in this country. 

 The following are the characters of the family, scale of the 

 petiole thick and upright, a constriction between the 

 second and third abdominal segments; sting well de- 

 veloped, eyes very small in the J ^.nd ? , ocelli and some- 

 times the compound eyes absent in the 5. Pujia3 always 

 enclosed in a cocoon. 



