DESCRIPTIONS OF NEW HYMENOPTERA, 293 



typical Zethus, It differs from Lahus humberiianus, Saussure, in its 

 po3t-scutelIum not being spined. L. humhertianus, Bingham (Fauna 

 of India, Hymen., i., p. 349) is probably a different species from 

 the humhertianus of Saussure. At least Col. Bingham in his des- 

 cription makes no mention of the presence of a scufcellar spine. 



I am inclined to agree with the opinion of Mr. W. J. Fox (Proo. 

 Acad, of Nut. So. of Phil., 1899, p. 435) and of Saussure (Synop. of 

 Am. Wasps, p. 56) that there is no valid distinction between Lahus and 

 Zethus, 



.-ty-V 



13 



