188 MESSES. C. HORNE AND F. SMITH ON HYMENOPTEEA 



second petiolated; the recurrent nervures either interstitial or both received by the 

 second submarginal cell. 



Gen. Pisonitus. The anterior wings with three submarginal cells, the second petio- 

 lated ; the first recurrent nervure received towards the apex of the first submarginal 

 cell, the second recurrent received about the middle of the second submarginal cell. 



Gen. Parapison. The anterior wings with two submarginal cells, the first recurrent- 

 nervure received towards the apex of the first submarginal cell, the second recurrent 

 nervure uniting with the apical nervure of the first submarginal cell, usually known as 

 the first transverso-median nervure. 



In all these divisions the eyes are reniform, as in Vespa ; and in all, the apical margins 

 of the abdominal segments are more or less depressed. 



1. Parapisojs' rufipes. (Plate XXI. fig. 1 a,) 



Female. Length 3 lines. Black, with the legs red. 



Head — the cheeks, clypeus, and emargination of the eyes with bright silvery pile ; 

 the mandibles ferruginous, the palpi pale ferruginous. Thorax — the posterior margin 

 of the prothorax and the sides of the metathorax with silvery pubescent pile ; the meso- 

 thorax with a deep central longitudinal channel and a short impressed line between it 

 and the tegulae ; the metathorax has also a deep longitudinal channel, which is broadest 

 and deepest at its origin at the postscutellum ; the wings hyaline and iridescent ; the 

 legs ferruginous, with their coxse black, the apical joints of the tarsi dusky. Abdomen 

 smooth, shining, and delicately punctured; the apical margins of the segments with 

 changeable bright silvery pubescence ; the sides of the abdomen very bright and glitter- 

 ing ; beneath smooth and shining. 



Hab. Mainpuri, North-west Provinces of India. 



Fam. CRABRONID^. 



1. Trypoxylon intruders. 



Female. Length 4-4J lines. Black, with the second and third segments of the 

 abdomen red, legs more or less testaceous. 



Head shining and delicately punctured, with an impressed line in front of the anterior 

 ocellus ; the clypeus and the emargination of the eyes with bright silvery pubescence ; 

 tips of the mandibles ferruginous, the palpi pale testaceous ; the extreme apex of the 

 joints of the antennae more or less rufo-testaceous. Thorax smooth and shining, with a 

 few very fine punctures; the collar and sides of the metathorax silvery, the latter with 

 a deep central longitudinal impression ; a semicircular enclosed space at the base of 

 the metathorax, which is tramversely striated ; the legs black, with the tips of the 

 coxae, the trochanters, the base of the tibiae, and the tips of the joints of the tarsi 

 pale testaceous ; the wings colourless and brilliantly iridescent. The petiole more than 



