of Exotic JTymenoptera. 305 



Head : the face, as high as the insertion of the 

 antennas, with silvery pubescent pile, above with golden ; 

 the cheeks and base of the mandibles silvery. Thorax : 

 a dense golden pubescent pile on the mesothorax, and a 

 changeable thin silvery one on other parts, on the apex of 

 the sides of the metathorax it is dense and brilliant ; the 

 legs have a glittering changeable silvery pile -, the anterior 

 wings and apex of the posterior pair fusco-hyaline. The 

 abdomen has a chequered brilliant silveiy pile above and 

 beneath ; the apical margins of the segments above, and 

 the middle of the segments, are splendidly brilliant and 

 glittering. 



Hah. — Australia (Champion Bay) . 

 In the British Museum. 



Genus Aulacophilus, n. g. 



Head as wide as the thorax; eyes large, their inner 

 orbit deeply emarginate ; the ocelli in an equilateral 

 triangle on the vertex ; the antennae inserted at the base 

 of the clypeus, at an equal distance from each other and 

 the inner margin of the eyes; the anterior margin of the 

 clypeus rounded ; the mandibles arcuate, edentate, acute 

 at their apex ; the antennae thickened towards their apex, 

 the scape obconic, the second joint subglobose. Thorax 

 oblong-ovate, the collar transverse, the posterior margin 

 arcuate ; the metathorax oblong, rounded behind ; legs 

 simple, the anterior and intermediate tibise with a single 

 spine at their apex; the anterior wings vnth one elongate 

 tnargiyial, and tivo submarginal cells, the first twice the 

 le^igth of the second; the first recurrent nervure uniting 

 with the first transverso-medial nervure ; the second received 

 a little within the second submarginal cell. Abdomen heart- 

 shaped ; the first segment formed into an elongate petiole 

 terminating in a clavus at its apex. 



Aulacophilus vespoides. 

 (Plate VI. fig. 4, and details 4a and 46.) 



Female. Length 5 lines. Black, and ornamented with 

 golden pubescence. 



Head : the clypeus and the sides of the face, as high aa 

 the emargination of the eyes, with dense golden pubes- 



TRANS. ENT. SOC. 1869. PART IV. (AUGUSt) . 2 A 



