114 ME. smith's catalogue of hymekopteeous insects 



2. PoLYBiA STIGMA. P. nigra, flavo-variegata, alls anticis hyalinis, 

 margine antico obscurato, stigmate flavo. 



Male. Length 5 lines. Black : the elypeus and cheeks with a silvery 

 pubescence ; the mandibles, elypeus, sinus of the eyes, the antennae 

 beneath, and the cheeks, yellow. Thorax : the anterior margin of the 

 prothorax, the tegulae and a line beneath the wings, a broad oblique 

 stripe on the sides of the metathorax, the scutellum, post-scutellum, 

 and an oblong-quadrate spot beneath it^ and also the legs, yellow ; 

 the femora and tibiae shghtly fuscous behind ; the anterior wings with 

 a dark spot at the apex of the externo-medial cell ; the stigma honey- 

 yellow, with a dark stripe beyond it at the margin of the wing. Ab- 

 domen : an ovate spot on each side of the second segment at its base, 

 and a yellow fascia on the apical margin ; the extreme apex of the ab- 

 domen yellow ; the fascia on the second segment, continued beneath, 

 and two ovate maculae at its base. 



Hab. Borneo (Sarawak). 



This is probably the male of P. decorata. 



3. PoLYBiA luctuosa. P. opaca, nigra, clypei margine antico flavo, 

 segmentis primo tertio quartoque abdominis flavo-marginatis, ahs 

 apice nigro uni-maculatis. 



Female. Length 5^ lines. Black : the anterior margin of the elypeus, 

 slightly interrupted in the middle, and a very narrow line at the inner 

 orbits of the eyes, not entering the sinus, yellow ; the head and thorax 

 opake ; wings hyaline, with a black spot on the anterior margin of the 

 superior pair, near their apex. Abdomen : a narrow yellow fascia 

 on the apical margins of the first, third and fourth segments, the 

 extreme apex yellow. 



Hah. Borneo (Sarawak). 



4. PoLYBiA DECORA.TA. P. nigra, flavo multidecorata, pedibus flavis. 



Female. Length 5 lines. Black : the elypeus, mandibles, antennae be- 

 neath, the sides of the face and sinus of the eyes, a spot above the 

 elypeus running up into a point as high as the anterior ocellus, and 

 two minute spots on the margin of the vertex, yellow. Thorax : the 

 anterior margin of the prothorax, the tegulae, and a large broad ob- 

 lique spot beneath the wings, two longitudinal lines on the mesothorax, 

 the scutellum and post-scutellum, the metathorax and legs, yellow ; 

 the scutellum and metathorax with a longitudinal black line down the 

 middle ; the wings subhyaline, with a fuscous cloud in the marginal 

 cell; the tibiae outside, and the tarsi above, slightly fuscous. Abdo- 

 men : the first segment campanulate, with a yellow spot on each side 



- at its apex ; the second segment with two very large spots at its base 

 occupying nearly half the length of the segment, and nearly uniting 

 its apical margin as well as those of the three following, with a mar- 

 ginal fascia, yellow ; the apical segment entirely yellow ; beneath 



