28S Mr. P. Cameron on new 



segment is opaque, coarsely aciculated, the sides near the 

 base finely striated ; the apex is smoother and more shining ; 

 there are two keels which reach to the apex and a less 

 distinct one which reaches on to the middle ; the apex has a 

 blistered appearance, is sparsely, obscurely punctured, and 

 lias an indistinct keel down the middle. The upper part of 

 the propleurae is aciculated, the lower finely and closely longi- 

 tudinally striated ; the middle of the mesopleune is closely 

 punctured and thickly covered with long white hair ; the 

 apical half of the metapleime is strongly striated ; the striae 

 are distinctly separated. The basal half of the mesosternum 

 is punctured ; from the middle, on either side, a curved 

 furrow runs to the sides at the apex ; the space bounded by 

 them is strongly punctured; outside them it is smooth. Legs 

 black, the hair white; the calcaria rufous, as are also the 

 tarsal spines. Wings uniformly fuscous violaceous, the 

 nervures and stigma black ; the second transverse cubital 

 nervure is only slightly oblique and is roundly curved 

 above ; the second recurrent nervure is received at the base 

 of the basal third of the cellule. Abdomen shining ; the 

 segments finely and sparsely punctured in the middle ; the 

 apical segments thickly covered with long white hair ; the 

 pygidium strongly punctured, the apex smooth, keeled in the 

 middle, depressed laterally. 



ii. Median segment with five keels. 



Tiphia quinquecarinata, sp. n. 



Nigra, flagello antcmiariun, maudibulis, tarsis ahdominisque apice 



rufis ; alis fulvo-hyalinis, nervis runs, stigmate nigro. $ . 

 Long. 1 1 mm. 



Antennae rufous, the flagellum black above, thickly covered 

 with a pale down ; the scape black, shining, sparsely covered 

 with long white hair. Head shining ; the front and. vertex 

 punctured, but not very closely, and sparsely covered with 

 fuscous hair. Clypeus projecting ; its apex rounded. 

 Mandibles rufous, black at the base, their underside fringed 

 with long golden hair; palpi testaceous. Thorax shining; 

 the pronotum marked, but not closely, with large punctures, 

 its apex smooth. Mesonotum strongly and closely punctured 

 in the middle, more sparsely on the sides, and thickly covered 

 with fuscous hairs. Scutellum with a row of large punctures 

 round the apex, and there is a more scattered and irregular 

 row on the sides ; postscutellum smooth, without punctures. 

 The three central keels on the median segment arc parallel ; 



