226 Mr. E. Saunders' Synojysis of British 



hairs; beneath with the 1st and apical segments largely 

 punctured, the others punctured only near the apex ; 

 legs black. 



Female, head round, black, coarsely punctured ; an- 

 tennae and mandibles rufo-ferruginous, the former dusky 

 towards the apex; thorax red, rugosely punctured, clothed 

 with a short adpressed silvery pubescence and scattered 

 black, projecting hairs ; abdomen black, punctured, 

 clothed with black adpressed hairs and with long scattered 

 projecting pale hairs, basal segment with a round spot 

 on the disk and a band at the apex silvery, 2nd segment 

 entirely covered with silvery hairs ; legs red. 



Length 5 — 8 mill. 



Common in some localities. Weybridge, Southwold, 

 Hayling Island, Plumstead Common, Charlton, near 

 Greenwich, Deal, Southend, SandoAvn Bay, &c. 



Myrmosa, Latr. (PI. A^II. fig. 10). 



Hist. Nat. xiii. p. 266. 



There is only one British species in this genus, which 

 is well characterised. c? entirely black ; wings with 

 four submarginal cells ; segments of the abdomen 

 slightly constricted at the base. $ much the same 

 shape as that of MutiUa, but with distinct ocelli, and the 

 intermediate cox?e contiguous. The surface in both sexes 

 is rugosely punctured and hairy. 



1. melanocephala, Fab. Ent. Syst. ii. p. 372, 2 . Fig. 

 Latr. Gen. Crust, et Ins. iv. pi. xiii. figs. 6 and 8. 



5" black, rugose, covered with silvery grey hairs ; 

 head quadrangular on the vertex, face rounded, broader 

 than long ; prothorax truncate in front, mesothorax 

 meeting it in a semicircular line ; metathorax bounded 

 at the sides by a slightly-raised line, and channelled in 

 the middle at the base ; wings slightly fuscous, with four 

 submarginal cells ; 2nd to 6th abdominal segments con- 

 stricted and depressed at the apex, the depressed portion 

 smooth and shining, 7th segment sulcate, bifid at the 

 apex, 2nd segment beneath with a small spine at the 

 base. Length 6 — 10 mill. 



? apterous, covered with short pale hairs ; head 

 black, rugosely punctured ; antennae testaceous, dusky 

 towards the apex ; thorax testaceous-red, rugose, slightly 



