258 Mr. E. Saunders' Sijnojysis of British 



do not know, but the puncturation and other characters 

 of the sexes with the spines are so similar that I feel 

 no doubt that the continental authors are right in their 

 views. 



2. insignis, V. d. Lind. Nouv. Mem. Acad. Brux. v. 



p. 81 = cornigera, <? , Shuck. ; insignis, ? , Shuck. 



Differs from the preceding in being less elongate, and 

 in having the face without a frontal spine in either sex. 

 The thorax is much more rugosely punctured, and the 

 parallel impressed lines in front strongly reticulated, 

 especially in the ^ ; the posterior margin of the meso- 

 thorax is also slightly wrinkled or crenate within the 

 reflexed edge in the 2 , strongly so in the ^ ; the colour 

 is almost identical in the two species, except that the 

 mandibles in the ^ of this are often entirely black. 



Length 6 — 7 mill. 



H((h. — Widely distributed, and not rare ; London dis- 

 trict, Hastings, Hayling Island. 



3. gracilis, Curt. Brit. Ent. xi. pi. 496. 



Like the two preceding in general appearance, but 

 distinguishable at once by the sides of the thorax below 

 the wings, having only one transverse consute line instead 

 of two ; the puncturation of the thorax is more like that 

 of cornigera, and the surface of the thorax somewhat 

 shining, the tubercles black. 



Length 6 — 7 mill. 



Hah. — Generally distributed and common. 



4. monilicornis, Dbm. Hym. Eur. 1, p. 243, 143. 



Larger than gracilis, and with a wider mesothorax, 

 distinguishable also by the pale tubercles and the white 

 labrum, and the much wider 2nd submarginal cell of the 

 wings, also in having the 2nd segment of the abdomen 

 not constricted at the base ; from the other species it 

 differs in the single transverse consute line on the sides 

 of the thorax below the wings. 



Length 8 mill. 



Hah. — Chobham ; Wallholme, E. Cumberland, Bold ; 

 Dorsetshire, Dale ; Gloucestershire, V. Perkins. 



