AMERICAN HYMENOPTERA. 383 



malar space and metanotum. Lateral furrows on 1st abdominal segment stoutly, 

 irregularly, somewhat closely striated. Plate on 2nd segment reaching to shortly 

 beyond the base of the apical third of the segment, it is gradually narrowed to 

 shortly beyond the middle, then continued as a stout keel; it is bordered by 

 deep, smooth, moderately wide furrows; the oblique lateral ones are almost 

 smooth, narrow, distinct. The suturiform articulation and the furrow on the 

 3rd segment almost smooth ; there is a narrower, similar furrow on the 4th ; the 

 apical segments black above, red below. Calcaria black. Malar space slightly 

 longer than usual Temples wide, rounded, not oblique. 



Hub. — Rio Javary. December. (Prof. I. W. H. Trail). 

 Comes near apparently to /. Buguetti Spin. The abdomen is not 

 quite so broad as usual. 



■ phiaulax Harperi sp. nov. 



Head and antennae black, thorax castaneons, the abdomen reddish castaneous, 

 legs dark castaneous, the tibise and tarsi darker colored than the femora. Wings 

 almost hyaline to the transverse basal nervure in the anterior, to shortly beyond 

 the middle in the posterior, the rest fuscous, lighter colored in the 1st cubital 

 cellule and along the recurrent nervure; the stigma pale ochraceous throughout 

 as ie also the base of the radius. 9 • Length 12 ; terebra 3 mm. 



Temples obliquely narrowed. Frontal furrow wide, extending to shortly be- 

 yond the middle, slightly narrowed and rounded at the apex. Parapsidal fur- 

 rows distinct, becoming wider and shallower towards the apex. The head and 

 median segment densely covered with long pale fulvous hair. Abdomen smooth 

 and shining; the furrows on the sides of 1st segment wide, smooth, except for a 

 few broken strise on the inner side. Area on second segment longish, reaching 

 to shortly beyond the middle; gradually narrowed to shortly beyond its middle, 

 then continued as a keel ; the furrows narrow, deep, crenulated ; the lateral fur- 

 rows smooth, wide, shallow. Suturiform articulation wide, shallow, crenulated. 

 as are also the furrows on the 3rd and 4th segments; that on the latter is about 

 half the length of that on the 3rd. The apical abscissa of the radius is distinctly 

 longer than the basal two united ; the radial cellule is long, sharp pointed at the 

 apex. 



Hab. — Demerara. (Rev. Mr. Harper). 



Ipliiuuluv Watertoiii sp. nov. 



Black ; the abdomen red, darker at the apex, the upper half of the propleurse 

 and the middle of the mesonotum of a darker red ; the mediau segment thickly 

 covered with white pubescence; wings dark fuscous, the stigma with slightly 

 more than the basal two-thirds, pale ochraceous. Length 8; terebra 3 mm. 



Temples roundly narrowed. Front not much depressed, its furrow reaching 

 to the middle. Mandibles dark red, black at the apex. Palpi black. Middle 

 area of the 1st abdominal segment narrow, compared with the sides; the lateral 

 depression wide, with 7 widely separated keels of moderate thickness; the outer 

 border, at the apex, is as wide as this depression, and is divided into two by a 

 longitudinal keel. Basal area on 2nd segment an elongated triangle, with a 

 short apical keel, not reaching to the apex of the segment, and bordered by a 



TRANS. AM. ENT. SOC. XXXI. OCTOBEK, 1905. 



