106 me. smith's catalogue of hymenopteeoits insects 



3. Trypoxyon coloratum. T. nigrum, laeve, nitidum ; pedibus 

 pallide ferrugineis, abdornine subferrugineo supra, obscure maculato. 



Male. Length 1\ lines. Black, smooth and shining : the clypeus, 

 mandibles, palpi and scape of the antennae, covered with golden 

 pile ; the cheeks and the emargination of the eyes with a glittering 

 pale golden pile. Thorax : the posterior margin of the prothorax, 

 the tegulae, tubercles and legs, pale ferruginous ; the intermediate 

 and posterior tibiae beneath, and also the tarsi, fuscous ; the apex 

 of the joints of the latter ferruginous ; the wings hyaline, their ner- 

 vures ferruginous, the stigma pale ; the sides of the thorax and the 

 metathorax with golden pubescence. Abdomen rufo-testaceous ; the 

 petiole, except its base, above, the node at its apex, above, as well as 

 all the segments, more or less black, or rufo-fuscous above ; the base 

 and apex of the segments, as well as the apical segment entirely, pale ; 

 beneath entirely pale. 



Hab. Borneo (Sarawak). 



This species is about the size of T. bicolor, which it very much resembles, 

 but from which it is very distinct. 



Gen. Ceabeo, Fabr. 



1. Crabro familiaris. C. niger, ocellis triangulariter ordinatis, meso- 

 thorace punctulato, pedibus flavis, metathorace laevi nitido, abdo- 

 rnine pubescente. 



Male. Length 2\ lines. Black : head a little wider than the thorax, 

 shining and delicately punctured; the stemmata in a triangle; the 

 clypeus and cheeks with silvery pubescence ; the scape yellow ; the 

 flagellum rufo-testaceous, slightly fuscous above ; the palpi pale tes- 

 taceous ; the mandibles ferruginous at their apex. Thorax : the 

 collar, tubercles, tegulae, scutellum and post-scutellum, the extreme 

 base of the wings, and the legs, of a sulphur-yellow ; the wings hya- 

 line and splendidly iridescent ; the base of the femora and the coxae 

 slightly ferruginous ; the mesothorax delicately punctured ; the meta- 

 thorax smooth and shining, with a central impressed fovea. Abdomen 

 pubescent, with the apical margins of the segments rufo-piceous. 



Hab. Borneo (Sarawak). 



2. Crabro rugosus. C. niger, ocellis triangulariter ordinatis in vertice, 

 mesothorace longitudinaliter striato, metathorace rugoso. 



Male. Length 2\ lines. Black: head wider than the thorax, quadrate ; 

 the stemmata in a triangle on the vertex; an impressed line in 

 front of the anterior stemma extending to the sulcation on the face ; 

 an impressed line running round the orbits of the eyes ; the 

 cheeks and face with a dense silvery pubescence ; the scape yellow ; 

 the tips of the mandibles ferruginous. Thorax : an interrupted line 

 on the collar, the tubercles, two spots on the scutellum, the post- 

 scutellum, the tips of the anterior femora, all the tibiae at their base, 



