Heterogj/na and Fossorial Htjmenoptem. 215 



2. IcEvinodis, Nyl. Adn. Mon. Form. Bor. Eur. p. 927. 



Extremely like the above, but differs in the male by 

 being smaller, with the antenna much shorter, and the 

 scape slightly shorter in comparison with the flagellum, 

 and the legs covered with long erect hairs. 



In the ? by the metathoracic spines being much 

 shorter and wider, each spine being wider at the base 

 than it is long, and quite straight, the space between the 

 spines being smooth and shining, not transversely rugose 

 as in the preceding ; the nodes of the petiole also are 

 rather smoother. In the ^ . much as in the ? , but 

 having, besides, the thorax less deeply rugose, and the 

 rugosities not longitudinal. 



Also a common species, but less generally distributed 

 than the preceding. 



3. sidcinodis, Nyl. Adn. Mon. Form. Bor. Eur. p. 931. 



<? differs from either of the preceding in being 

 darker (nearly black) ; head not shining, with the frontal 

 area longitudinally sulcate ; mesothorax in front dull, 

 more or less tranversely wrinkled, rather deeply and 

 longitudinally rugose behind the converging lines ; 

 scutellum and base of the metathorax also rugose ; first 

 node of the petiole dull and more or less rugose, second 

 polished and shining ; abdomen and legs much as in the 

 preceding. Length 6 mill. 



? and ^ may be known by their darker, redder brown 

 colour, the head more deeply rugose, and reticulated 

 behind the eyes at the sides, the scape of the 

 antennae curved suddenly near the base, the frontal area 

 sulcate, the thorax and nodes of the petiole deeply, 

 longitudinally, and rugosely sulcate. Length 6 — 7 mill. 



Hah. — Bare. Wales, Hampshire, Chobham. 



4. scabrinodis, Nyl. Adn. Mon. Form. Bor. Eur. p. 930. 



<? at once known from any of the preceding by the 

 short scape of the antennae, which is not longer than the 

 first two or three joints of the flagellum, and by having 

 the legs very densely covered with long erect hairs. 



2 and ^ very like sidcinodis, but with the scape 

 of the antennae thicker and rather shorter, distinctly 

 geniculated near the base ; it also appears to be flat- 

 tened at the turn : this appearance is given by a sort 



