168 On nev) Parasitic ITijmenoptera from Borneo. 



Scutellum smooth. Base of mctanotum closely punctured, 

 more or less striated ; the rest strongly, closely reticulated ; 

 spines broad ; the apical lateral edges serrate. Propleurse 

 above obliquely rugosely striated, the lower \iaxi with stout, 

 clearly separated keels ; the mesopleurae closely rugosely 

 reticulated-punctured, more or less striated at the apex ; the 

 metapleurre closely, strongly, obliquely striated-reticulated. 

 Postpctiole smooth, the middle segments closely punctured. 



O P II I ON I X I. 



Tkichioxotus, gen. nov. 



Transverse median nervure in hind wings unbroken. 

 Transverse median nervure in fore Avings received shortly 

 beyond the transverse basal. Scutellum roundly convex; 

 its sides keeled. Mesonotum and mesopleurae reticu- 

 lated, the former without parapsidal furrows. Antennae 

 as long as the body. Basal joint of hind tarsi longer than 

 the others united. Apex of clypeus rounded. Thorax densely 

 pilose. Mctanotum reticulated, the reticulations hid by the 

 dense pile. Basal joint of hind trochanters as long as the 

 second. Discoidal cellule at the apex twice its width at tlie 

 base. Eyes large, slightly converging below. Ovipositor 

 shorter than the apical two segments of the abdomen united. 

 Mandibular teeth almost equal. Hinder calcaria as long as 

 the second tarsal joint, clearly longer than the breadth of 

 the apex of the tibiae. Claws peftinated. 



Comes close to Trichomma, which may be known from it 

 by the hairy eyes, strongly converging below, by the basal 

 joint of the trochanters being more than double the length 

 of the second, and by the flatter, more oblique, not reti- 

 culated scutellum, by the more narrowed at the base brachial 

 cellule, the transverse discoidal nervure being broken farther 

 up the middle than it is in the present genus, which has 

 further strongly pectinated claws, while in Trichomma the 

 spines are very few, if any. The only other genus with 

 which it could be confounded is Atrometus, but that has the 

 discoidal cellule sharp-pointed at the base {cf. Schmiede- 

 kuecht, Zeit. f. Hym. u. Dipt. 1902, p. 361). 



TricMonotus rtticidatus, sp. n. 



Black, the four front legs, hind coxae, apical joint of 

 trochanters, basal three fourths of hind tibiae, and the 

 calcaria, pale yellow ; the mandibles, face (except in the 

 middle above and below), the inner orbits and the lower 



