42 MK. p. OAMEBON ON THE [May 7, 



Metapleural keel complete. Head wider than the mesothorax ; 

 its front and vertex reticulated, without spines or keels. Scutellar 

 depression large, shallow, and bearing longitudinal keels. Areolet 

 large, about twice longer than wide ; the transverse cubital ner- 

 vures are parallel and only slightly oblique ; the recurrent nervure 

 is received near the base of the apical fourth of the cellule ; the 

 transverse median nervure is received behind the transverse basal. 

 Both the transverse cubital nervures are distinct. 



The eyes largely project ; the head behind them is obliquely 

 narrowed and is well-developed there ; the occiput is sharply 

 margined ; the scutellum is flat and has the sides keeled ; on the 

 basal half of the second segment are two oblique, wide, shallow 

 furrows, which enclose a triangular space ; at the apes of this is a 

 narrow transverse furrow ; there is a similar, but nob quite so 

 distinct, furrow on the third segment. The legs are long; the 

 tarsi are spinose, the anterior are twice the length of the tibia? : 

 the median segment is coarsely, irregularly reticulated ; the 

 spiracles are about three times longer than wide ; in the hind 

 wings the transverse median nervure is angularly broken by the 

 subdiscoidal nervure shortly below the middle. 



In Ashmead's system (Bull. U.S. Nat. Mus. xsiii. p. 44) this 

 genus comes near Mesostenoideus and Christolia. Characteristic 

 are the clearly separated middle abdominal segments, spined at 

 their apices, and the spines on the basal ventral segment. 



[Vagenatha spiisrosA, sp. n. 



Nigra, Jiavo-maculata, spinis Jiavis ; pedihus flavis, coxis posticis, 

 apice femorum fosticnrum apiceque tibiarum posticarum nigris ; 

 alis hyalinis, nervis stigmateque nigris. c? . 



Long. 16 mm. 



Rah. Borneo (Shelford). 



Antennae as long as the body ; black, the scape beneath and the 

 middle of the flagellura broadly white. Head black ; the clypeus 

 yellow. Front and vertex smooth and shining, except the front, 

 which is irregularly reticulated in the middle — more broadly above 

 than below. The face is opaque, coarsely shagreened, and sparsely 

 haired ; the outer orbits are thickly covered with longish white 

 pubescence. The spines on the pronotum are large. Mesonotum 

 Tclosely, rugosely punctured, opaque ; the parapsiclal furrows are 

 irregularly striated. The scutellar depression is large ; in the 

 centre are two stout longitudinal keels, with a thinner one betM^een 

 them ; on their outer side is another narrow keel. Scutellum 

 sparsely punctured at the base. Median segment strongly, closely, 

 rugosely reticulated. Propleurse obliquely, stoutly striated ; the 

 striae distinct and clearly separated. Mesopleurae on the base and 

 lower side closely, rugosely punctured ; the middle obliquely 

 striated 5 the apex behind smooth and shining above. Metapleurae 

 strongly, obliquely striated ; below thickly covered with white 

 pubescence. Legs yellow ; the femora with a more fulvous hue ; 



