Mr. K. K. Turner on Fcssorial Hymenoptera. 305 



In all the males the apical dorsal segment is shallowly in- 

 cised at the apex. 



El'is [Mesa) ametafla, sp. n. 



^. Front longitudinally rugose, vertex punctured; cly- 

 peus and front below the base of the anteunse rather densely 

 clothed with white pubescence ; scape strongly punctured 

 beneath, the third joint of the flai^ellum longer than the 

 second; antennie as long as the head, thorax, and median 

 segment combined. Thorax closely punctured, much nar- 

 rower than the head ; the anterior margin of the pronotum 

 straight and slightly raised, with prominent angles ; meso- 

 notum longer than the pronotum. Median segment coarsely 

 rugose. Abdomen very slender ; the first segment half as 

 long again as the posterior femur and trochanter combined, 

 the basal half forming a narrow petiole flattened on the 

 dorsal surface, the apical half swollen, contracted at the 

 apex ; second segment about half as long as the first, twice 

 as wide at the apex as at the base ; third segment a little 

 longer than broad. Seventh dorsal segment almost pointed 

 at the apex, not incised. The whole abdomen subopaque, 

 minutely punctured and thinly covered with delicate whitish 

 pubescence. Third abscissa of the radius more than half as 

 long again as the second; first recurrent nervure received 

 beyond the middle of the second cubital cell, second ju.>;t 

 beyond one quarter from the base of the third cubital 

 cell. 



Black ; the apical half of the clypeus, an interrupted line 

 on the posterior margin of the pronotum, a transverse line 

 on the apical margin of the third, fourth, and fifth dorsal 

 segments of the abdomen, a transverse spot at the apical 

 angles of the second and sixth segments, a line on the 

 anterior femora and on the anterior and intermediate tibiae, 

 the anterior tarsi and the basal joint of the intermediate and 

 posterior tarsi pale yellow. Abdomen without blue re- 

 flections. Wings clear hyaline, nervures black. 



Length 11-14 mm. 



Hab. Mlanji Boma, Nyasaland ; 2400 ft. [S. A. Neave). 

 26 April-5 May, 1910. Three s]jecimens. 



Almost certainly the male of E. innot'da, Turn., which 

 was taken in considerable numbers at the same time. 

 E. heterogamia, Sauss., a larger species, also occurs more 

 sparingly in the same locality. 



Very near E. asmarensis, Turn., but the second and third 

 dorsal segments are more elongate in the present species, the 

 third abscissa of the radius is longer, and the seventh dorsal 

 segment is without a carina. 



