British Hymenoptera. 253 



several females last spring, and this spring, off sallows at 

 Hastings, in April. I suspect it is sometimes overlooked 

 for Trimmerana, from which it is, however, structurally 

 abundantly distinct. The <? closely resembles that of 

 prcecox, but its entire 8th abdominal segment, which is 

 rounded at the apex, its larger size, and much less 

 developed mandibular tooth will at once distinguish it. 

 The 3rd joint of the antennge in both sexes, with its very 

 narrow base, is a peculiar character in this species. 



21. Anclrena prcecox, Scop. 



Scop., Ent. Carn., p. 301. Smithella, Kirby, Smith, 

 Cat. Brit. Hym., 2nd ed., p. 48. 



Face of the <? above the clypeus with black hairs ; 

 clypeus clothed with white ; mandibles with a very large, 

 wide, triangular tooth at the base outwardly ; apical ven- 

 tral segment emarginate ; pubescence obscure ochreous- 

 brown ; tarsi piceous. ? , upper surface of the insect 

 entirely covered with ochreous-brown hairs ; rather 

 brighter on the thorax; apical fimbria brown; scopse 

 ochreous-brown. 



<? . Black ; head finely and longitudinally rugose 

 above the antenna ; face above the clypeus clothed with 

 black hairs, clypeus itself with white ; sides of the face 

 and clypeus strongly and largely punctured ; mandibles 

 long and curved, produced at the base outwardly into a 

 large, triangular, flat tooth, blunt at the apex. Antennae 

 reaching to the post-scutellum ; 3rd and 5th joints sub- 

 equal in length, 4th rather shorter ; vertex of the head 

 deeply emarginate behind; the cheeks much produced 

 and angulated behind the eyes. Mesothorax dull, very 

 finely rugulose, clothed with obscure brown hairs ; basal 

 area of metathorax very finely rugulose, sides punctured 

 and rugulose. Abdomen rather shining, sparsely clothed 

 on the basal segment and the base of the 2nd with long 

 ochreous hairs, on the following with short hairs, apex 

 with long pale ochreous hairs ; beneath with long hairs, 

 and the segments with golden apical ciliations, apical 

 ventral segment pale at the apex and emarginate. Legs 

 clothed with greyish brown hairs ; tarsi piceous. 



? . Face clothed with obscure ochreous-grey hairs 

 mixed with a few black ones; the clypeus finely 

 rugulose and largely punctured, its anterior margin 

 emarginate, but with its angles not produced ; 3rd joint 



