154 HYMENOPTEKA. 



extend to the broad apex, which is longitudinally striated in the centre and punctured 

 at the sides ; the following segment of the abdomen is closely punctured all over and 

 striated at the base ; the next slightly punctured ; the following scarcely punctured ; 

 the apical impunctate, smooth, and shining. Gastrocceli large, a semiopaque furrow at 

 the bottom ; the upper (and inner) side strongly striated. The thorax and abdomen 

 are covered with a greyish pubescence. The following parts are black : — the sternum 

 entirely, the sutures of the pleurae, the space above the coxae, the pronotum on the disc in 

 front, the scutellum and postscutellum all round, the lower part of the metanotum, the 

 third, fourth, and fifth abdominal segments at the base above, and the sheath of the 

 ovipositor at the apex. Legs stout. Coxae obscurely punctured; the posterior pair 

 hollow on their outer side. Areolet 5-angled, longer than broad ; recurrent nervure 

 received nearer the apex than base. 

 A stout robust species. 



38. Ichneumon platyaspis. 



Hab. Mexico, Chapul tepee {Bilimek). 



In size and sculpture this species agrees with I. maculipleuralis, as it does also in 

 coloration, except that there is no black on the thorax, while the apices of the posterior 

 tibiae are black. The face is densely covered with reddish-yellow hair, which almost 

 hides the punctuation. The pleurae are neither so shining nor so smooth ; the meso- 

 pleurae are longitudinally striated on the lower side. The supramedian area of the 

 metathorax is broader, and the gastrocceli are shallower and much less distinct. 



39. Ichneumon impndicatus. 



Ferrugineus ; facie, orbitis oculorum, abdominis segmentis l°-4 m , apiee eoxisque anterioribus subtus, flavis ; 



abdominis segmentis 2°-4 m basi nigris ; tarsis pallide flavis; alis hyalinis, nervis et stigmate ferru- 



gineis. § . 

 Long. 16 millim. 



Hab. Mexico {Bilimek). 



Head somewhat dilated behind the eyes ; the face bluntly projecting in the middle, 

 and closely punctured all over. Thorax coarsely punctured all over ; closely covered 

 with a black or fuscous pubescence on the disc, the sides with paler pubescence. There 

 are two furrows in front of the mesonotum running to the pronotum. Scutellum convex, 

 narrowed behind, the sides in front bluntly carinate. Metanotum with a gradual slope, 

 depressed in the centre, coarsely punctured, the punctures running into reticulations at 

 the sides and apex. The upper median area is a little broader than long, the sides 

 dilated in the middle, the apex open ; the lateral keels of the supramedian area, and 

 the lateral tubercle also, are almost obsolete. Petiole carinate, the postpetiole depressed 

 at the sides ; both are smooth, shining, and obscurely aciculate. Gastrocceli deep, longer 

 than broad, contracted at the base, and coarsely striated. The remaining abdominal 

 segments are coarsely and closely punctured all over ; the black band on the second 



