ivith remarks on some aberrant genera of the Scoliida^. 69 



In some respects the males approach those of Scotsena, of 

 which the females are still unknown, but the mandibles 

 and clypeus are very different. 



Tchjilioromyia excisa, n. sp. 



^ . Mandibles bidentate at the apex, the exterior tooth long and 

 acute and bent inwards, the interior tooth short and rather blunt, 

 from the base of the teeth the mandibles are much broadened towards 

 the base and produced on the interior margin into a broadly tri- 

 angular tooth, which when the mandibles are closed fits into the 

 emargination of the clypeus. Clypeus broadly but very shallowly 

 emarginate, smooth and shining, with an obscure tubercle at the 

 base. Head rather small, scarcely broader than the mesonotum, 

 finely and very closely punctured, with a short longitudinal carina 

 above and between the base of the antenn<B, with a very delicate 

 impressed line on each side of it touching the base of the antennae. 

 The antennae as long as the head, thorax and median segment com- 

 bined, the six apical joints strongly arched, the second joint of the 

 flagellum shorter than the third. The whole head thinly clothed 

 with long pubescence, black above, grey beneath. Thorax rather 

 more coarsely and sparsely punctured than the head, the pronotum 

 dejjressed anteriorly, the scutellum long. Median segment very 

 shallowly transversely ragulose, as long as the mesonotum, with a 

 short longitudinal depression on each side at the apex. Abdomen 

 slender and elongate, about one-third longer than the rest of the 

 insect, shining and very sparsely punctured, the first segment long 

 narrowed at the base, with a slight tubercle on each side at one-third 

 from the base, and with a median sulca from the base not reaching 

 the middle. Epipygium strongly punctured at the apex, deflexed 

 and produced, covering the hypojDygium and deeply emarginate at 

 the apex. Hypopygium narrow, obtuse at the apex. 



Black ; the mandibles except at the apex, the clypeus except the 

 anterior margin, a small spot at the summit of the eyes, the margins 

 of the eyes below the base of the antennae, a triangular spot on the 

 scutellum, a transverse spot on the postscutellum, a large irregular 

 spot occupying the sides of abdominal segments 1-6, enclosing a 

 small black spot on segments 2-5, a spot on each side of ventral 

 segments 2-5, a line beneath the intermediate and posterior femora, 

 and the anterior tibiae except at the apex yellow ; the intermediate 

 and posterior tibiae and tarsi fusco- ferruginous, the anterior tarsi 

 fusco-ferruginous at the base, the three apical joints fuscous. Wings 

 hyaline, faintly iridescent, nervures black, the stigma ferruginous. 



