290 GENUS JFENUSA. 



received a piece beyond the second cubital nervure, and in the third 

 cubital cellule ; the transverse median nervure is received beyond the 

 middle of the cellule. 

 Length If line. 



Differs from nigriia in being larger, in having longer 

 antennae, in having the wings much darker, in the 

 transverse radial nervure being received at a greater 

 distance from the second transverse cubital, in the 

 transverse median nervure being received beyond the 

 middle of the cellule and in the darker legs. F. moni- 

 licornis, Thorns., agrees with it in coloration, but it has 

 fourteen- jointed antenna, and the transverse radial 

 nervure is interstitial. It is very like Fenusa melano- 

 poda in the coloration of the body, legs and wings, 

 and in the neuration of the latter, but it is a little 

 larger, has the antennge a little longer and ten-jointed, 

 while the third joint is not double the length of the 

 fourth. It, in fact, forms a connecting link to Fenusa* 



Rare. Bishopton, on Birch. 



Genus FENUSA. 



Fenusa, Leach, Z. M., iii, 126. 



Antenna nine to ten-jointed, short, thick, more rarely longish, third 

 joint longer than fourth. 



Wings with two radial and three cubital cellules, the first and second 

 of the latter receiving each a recurrent nervure. Basal nervure curved 

 as is the first recurrent ; lanceolate cellule petiolate ; posterior wings 

 with no middle cellules ; accessory nervures longly appendiculated. 



Body short, thick. Feet without patellas. 



The head has usually the sutures on the vertex 

 distinct. The vertex behind the ocelli raised and 

 bounded by a furrow in front. The clypeus is trun- 

 cated at the apex. The eyes reach to the base of the 

 mandibles. The palpi are, I consider, six- join ted but 

 between the third and fourth joints is a short con- 

 striction which Hartig regards as the representative 

 of a joint. The basal joint is not much longer than 

 the second which is scarcely half the length of the 

 third; the last three do not differ much in length. 



