12 Mr. P. Cameron on Ilymenoptera 



pubescence^ smooth -, the oral region bordered laterally by 

 deep wide furrows. There is a distinct malar space about 

 two thirds as long as the antennal scape. Temples wide, 

 only slightly narrowed behind. Parapsidal farrows narrow, 

 deep, clearly defined, reaching from the base to the apex. 

 The third abscissa of the radius fully as long as the basal two 

 united ; the recurrent nervure received distinctly before the 

 transverse cubital. 



Ij'hiaida.v cosmiothecus^ sp. n. 



Black; the head, palpi, mandibles (except at apex), pro- 

 thorax, mesothorax, and metathorax (except the sides of 

 metanotum broadly) red; the fore legs red, darker at the 

 apex. Wings uniformly fuscous violaceous; the second 

 abscissa of radius longer than the third ; the legs and sheaths 

 of ovipositor densely covered with stiff' black hair ; the apex 

 of the sheaths of the ovipositor with a broad band of white 

 hair. On the apical tliree fourths of the raised part of the 

 first abdominal segment are two stout parallel keels, forming 

 almost a deep furrow ; they are united near the base by a 

 weak transverse keel ; on the sides are two keels, the outer 

 (and shorter one) commencing at tiie base, the other shortly 

 beyond it ; the basal half of the bordering furrows is stoutly 

 closely striated ; tl»e second, third, and basal half of fourth 

 segments are closely stoutly striated ; the central keel on 

 the second extends to the apex, it becoming gradually 

 narrowed until it is more than twice longer than it is wide at 

 the base, where it is smooth, the rest being closely longitu- 

 dinally striated ; the sides of the segment are smooth, 

 shining, triangular ; the central area on the outer side bears 

 two irregular longitudinal keels ; the inner sides bear a few 

 irregular transverse ones. The first transverse furrow has 

 the central third stoutly crenulated ; on either side is a large 

 smooth area, longer than wide, the inner side becoming 

 gradually roundly curved from the base to the apex ; there 

 is a somewhat similar but smaller and semicircular area on 

 the sides of the fourth segment. There is a smooth, raised, 

 mitre- shaped space in the centre of the face ; the sides are 

 sparsely punctured, the punctures with hairs. The parts 

 bordering the centre of the front are raised. Metanotum 

 covered sparsely with long black hair. Temples nearly as 

 long as the top of the eyes, rounded, not much narrowed 

 behind. ? . 



Body 13, ovipositor 17 mm. 



This species is not unlike /. reticulatus, Cam., which may 



