188 MESSRS. C. HORNE AND F. SMITH ON HYMENOPTERA 
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. PARAPISON 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 tegule; 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 coxe 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. CRABRONIDZ. 
1. TRYPOXYLON INTRUDENS. 
Female. Length 4-43 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 antenne 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 transversely striated; the legs black, with the tips of the 
cox, the trochanters, the base of the tibie, and the tips of the joints of the tarsi 
pale testaceous; the wings colourless and brilliantly iridescent. The petiole more than 
