Manchester Memoirs, Vol. xliii. (1899), No. 3. 57 



entirely ; the transverse median nervure is received shortly 

 in front of the transverse basal. Abdomen shorter than 

 the thorax; the petiole large, longer than the second 

 segment, not much narrowed towards the base. Legs 

 elongate, the hinder coxae large ; the hinder femora with a 

 sharp tooth on the under side near the apex ; the lower 

 side behind the tooth with a rough edge. 



This genus appears to me to be a valid one ; possessing 

 four good characters whereby it may be separated from 

 Aulacus, namely (i) by the presence of a stout horn on 

 the front, which is also more depressed in the centre and 

 having the depression margined laterally by a blunt keel, 

 (2) the pyramidal scutellum, (3) the much broader and 

 shorter petiole, and (4) the spined hinder femora. Further 

 points of differences are — the almost unidentate mandi- 

 bles, which are also shorter and blunter ; the antennae 

 placed higher up on the face, being situated opposite the 

 middle of the eyes; the larger, hollowed postscutellum ; 

 the more elongated metathorax; the more elongated hinder 

 coxae ; and the shorter abdomen. 



The tuberculated head and the spined femora shows 

 some relationship with Megischus, from which it is very 

 different in other respects, 



Wroughtonia CORNUTA, Sp. nov. 



Nigra, abdominis basi flavo ; pedibus fiilvis, apice 

 femorum posticorum apiceque tibiarum posticarum late 

 nigris ; tarsis posticis albis ; alis hyalinis, stigmate nervisque 

 nigris. $ . 



Long. 8-9 ; terebra 9 mm. 



The basal two joints of the antennae rufous beneath ; 

 the base of the flagellum black, the other joints broken 

 off. Head black, the front and vertex shining, smooth, 

 glabrous ; the face rugosely punctured ; in the centre 



