264 p. CAMERON. 



behind and the base of the hinder, yellow; wings hyaline, the nervures and 

 stigma black ; the apices of the abdominal segments piceous. 9 • Length 5 mm. 

 Head large, cubital, longer than broad, the temples very little narrowed, as 

 long as the eyes as seen from above; the occiput roundly incised, the outer edges 

 bluntly rounded. Ocelli in a triangle, separated from the eyes by a greater dist- 

 ance than they are from each other ; there is a furrow between them, which, be- 

 hind, extends beyond the hinder. The lower part of the outer orbits is obliquely 

 narrowed. Pronotum large, flat above, not much narrowed towards the base, 

 the basal angles slightly projecting, rounded. There are 2 fine furrows on the 

 base of the mesonotum in the centre. Scutellar depression deep, wider and 

 deeper at the sides; its apex bordered by a distinct, curved furrow. Metanotuni 

 aciculated, its base with a striated depression ; the furrow bordering the area is 

 also striated; the apical furrow deep, nai'row above and below. Abdominal 

 petiole long and slender, not much dilated at the apex, fully as long as the fol- 

 lowing two segments united. Hind tibiae narrowed at the base, greatly dilated 

 towards the apex, which is rounded ; metatarsus as long as the following 3 joints 

 united. Recurrent nervure received shortly beyond the middle; the apical 

 abcissa of radius long, oblique. 



Hab. — Mexico. 



HOL.CORHOPAL.lIM gen. nov. 



Mesosternuin bordered by a wide, deep, oblique furrow. Base 

 of uietanotum with 3 large arese, the central smaller than the lateral ; 

 the top of apical slope bordered by a keel. Occiput bordered by a 

 stout keel placed far below the top. Mandibles long, curved, 

 sharply pointed. Parapsidal furrows distinct. Radial cellule short, 

 not reaching half way to the apex ; transverse median nervure re- 

 ceived far behind the transverse basal. 



Temples short, obliquely narrowed. Ocelli in a triangle. Scu- 

 tellar depression large, deep, a stout keel in its centre and an oblique 

 one on either side. Abdominal petiole long, nodose at the apex. 

 Legs densely covered with long hair; claws long, slender, simple. 

 Mesopleurse bordered near the base by a stout, obliquely curved 

 keel. Third and fourth joints of antennae about equal in length. 



This genus has the form and long abdominal petiole of Bhopalum, 

 but is readily distinguished from it by the conspicuous mesopleural 

 furrow, by the areolated base of mesonotum and by the transverse 

 median nervure being widely distant from the transverse basal. 



Holcorhopalum foveatuin sp. nov. 

 Black, shining; the legs pallid yellow, the hind femora black, the hind tibiae, 

 except at the base, and their tarsi dark fuscous; wings hyaline, the nervures 

 blackish ; apex of 1st abdominal segment testaceous, the last and the apex of 

 penultimate rufous Antennal scape and underside of flagellum rufo-testaceous. 

 9. Length 4 mm. 



