370 



Smooth, shining. Face sparsely, the palpi more closely covered 

 with wbite hair. Basai 4 veuLral segments pallid yellow. On the 

 larger spécimen there is a furrow, dilated at the apex, extending 

 fi'om the base to shortly beyond the middle of the 2 nd abdominal 

 segment, and a cnrvedone on tbe basai hait' of the 2 nd . Sheaths of 

 ovipositor alniQst bare. 



MACROCENTRIN.E. 



Eiolo gen. nov. — Wings with 3 cubital cellules, tbe radial 

 cellule long, wide, reachïng to tbe apex of the wing, the radins 

 issuing from the basai fourth of the stigma; the l st cubital and 

 discoidal cellules continuons throngh the wide bullating of the ner- 

 vures; the nervellus interstitial ; the l st abscissa of cubitus thi- 

 ckened, roundly curved; the récurrent nervure received in 2 nd 

 cubital cellule ; anal nervure issuing from near the bottom, not 

 interstitial ; there is a long narrow radial cellule in the bind wing ; 

 the costal cellule is long and narrow to near the apex, where the 

 nervure bends obliquely downwards and is continued obliquely to 

 the apex; the basai cellule is large, triangular. Eyes large, parallel, 

 the malar space small. Glypeus clearly separated, its apex trans- 

 verse, obliquely sloped below. Ocelli large. Occiput not margined. 

 Parapsidal furrows distinct, uniting at tbe apex. Scutellurn' not 

 margined. Abdomen twice longer than the head and thorax united, 

 compressed from the 3 rd segment and length ened downwards, 

 sabre-shaped, the basai 2 almost cylindrical, of almost equal length, 

 each almost as long as the following 2 united, the ovipositor longer 

 than the body. Legs long, tbe fore tarsi longer than the other parts 

 united, the metatarsus as long as the tibia3 ; spurs minute ; the hind 

 coxae 4 times longer than thick. 



The occiput is roundly, broadly incised. Mandibles bidentate, the 

 upper tooth longer than the others. The 2 nd cubital cellule is, in 

 front, 3 times, behind 4 times longer than wide. Hypopygium 

 bluntly cultriform. 



This genus belongs to the Macrocentvini as defined by Ashmead 

 (Bull. U. S. Nat. Mus., XXV, 118). It cornes near to the African 

 genus Dicramoneura KmE<:u.,which may be known by the nervellus 

 being largely post-furcal; and the médian and submedian nervures 

 are tbickened, while in my genus it is only the basai abscissa which 

 is thicker than the others. The 2 nd cubital cellule is much longer 

 and of more equal wjdth throughput than it is in Çampocentrw, in 

 which the basai abscissa of the cubitus is not curved forward at the 

 base, and the radius issues from the middle of the stigma, the 

 latter also being wider compared with the length. 



