382 HtMENOPTERA. 



rounded slope ; it is coarsely reticulated and sparsely covered with long white hair ; in 

 the centre at the base is a small area longer than broad, keeled down the sides and 

 down the middle, the enclosed space being quite smooth. The propleurae are coarsely 

 reticulated; the mesopleurse are coarsely punctured, and have a depressed, longitudinal 

 space in the middle ; the apex and base of the metapleuree are smooth, impunctate, 

 shining, the rest of the metapleuree reticulated. The sternum behind the fore legs 

 sharply depressed, gradually raised towards the apex, and terminating in two stout, 

 sharply pointed teeth in the middle. The abdomen is not much longer than the 

 thorax, shining, densely covered with long white hair, the posterior segments being 

 densely fringed with it. The petiole is very shining, the apex hardly punctured ; 

 sparsely covered with long white hair ; beneath, it is rugosely punctured. The second 

 ventral segment is impunctate, the sides broadly black ; the apical ventral segment is 

 rather weakly punctured and has a slight depression in the centre towards the apex. 

 The legs are pale yellow, except the apex of the four hinder tibiae and the tarsi, which 

 are blackish ; the hair is long and white. The wings are uniformly clear hyaline, the 

 nervures pallid yellow, the stigma testaceous ; the radial cellule is twice the length of 

 the stigma ; the first transverse cubital nervure is distinctly, the second very slightly, 

 curved ; the first recurrent nervure is received towards the basal third of the cellule, 

 the second is obliterated entirely ; the cubital nervure does not extend beyond the 

 second transverse cubital nervure. 



This species approaches S. eubule, but it is larger and stouter; the mesonotum is 

 coarsely reticulated, not punctured, and is without furrows ; the head is much more 

 developed behind the eyes ; the underside of the petiole is strongly punctured ; and the 

 sternum has two teeth: 



138. Sphserophthalma phylacis. 



tong. 13 millim. tf . 



Hah. Mexico, Northern Sonora [Morrison). 



Almost identical in coloration with S. paron, but easily known from it by the 

 absence of the teeth on the sternum. The head not quite so wide as the mesothorax, 

 shining, covered with long white hair, bearing moderately large punctures at the sides ; 

 the vertex almost impunctate, behind with a distinct margin ; the ocellar space not 

 raised above the rest of the vertex, the space between the ocelli closely and finely 

 punctured ; behind the eyes the head is as long as they are and rounded. The mandibles 

 are rufous, the tips black; sparsely covered with long white hair. The antennas are 

 stout, nearly reaching to the apex of the scutellum ; the scape sparsely covered with 

 long white hair ; the flagellum almost bare, or, at most, with a white pile ; the third 

 joint is shorter than the fourth. The thorax is covered all over with long white hair ; 

 coarsely punctured, the punctures running into reticulations at the apex ; the lateral 

 furrows are almost obliterated by the punctures. The scutellum coarsely, rugosely 



