SPH^EOPHTHALMA. 369 



segment having long silvery hairs ; the mesopleurse rather strongly punctured and 

 covered with pale pubescence ; the metapleurse strongly and deeply reticulated. The 

 abdomen is dull ferruginous, blackish towards the apex; the petiole longer than 

 broad, dilated towards the apex, strongly punctured, and covered with long silvery 

 hair ; the second segment is also punctured, and has the basal half covered with 

 silvery, and the apical half with blackish hair, the extreme apex fringed with long 

 pale golden hair, this being also the case with the third segment ; the fourth 

 and fifth segments are covered with long black hair; the pygidium is strongly 

 punctured at the base, and bears long, pale, golden hairs. The ventral surface 

 is coloured like the dorsal surface ; the basal segment is strongly punctured, and the 

 keel is stout and has a slight gradual curve on the top ; the second segment has widely 

 separated punctures, and bears rather long fuscous hair ; the other segments at the 

 apex are fringed with long pale golden hair ; the terminal segment is strongly punc- 

 tured. The legs are black and covered with pale silvery hair ; the calcaria are white. 

 The wings smoky, darker towards the apex; the radial cellule does not reach to the 

 apex of the third cubital cellule ; the first abscissa of the radius is oblique, the apical 

 one distinctly curved ; the first cubital cellule is hardly so long as the radial, and is 

 sharply lanceolate at the base ; the first transverse cubital nervure is slightly and the 

 second more distinctly elbowed below the middle ; at the top the second cubital cellule 

 is a little less than the space bounded by the first transverse cubital and the first 

 recurrent nervures, the latter is received a little beyond the basal third of the wings ; 

 the third transverse cubital nervure is distinct but faint throughout, this being likewise 

 the case with the second recurrent nervure, which is received in the middle of the 

 cellule. 



The example from San Bias has the wings much darker and more violaceous in tint, 

 the base, too, not being lighter-coloured ; the first cubital shorter and not so sharply 

 lanceolate at the base ; and the first recurrent nervure received nearer the middle of 

 the cellule. It is also smaller, but otherwise I cannot find any difference between it 

 and the Tepetlapa specimen, from which the description is taken. 



120. Sphaerophthalma guerreroensis. 



Long. 8 millim. J . 



Hab. Mexico, Chilpancingo in Guerrero 4600 feet (H. H. Smith). 



Except that the petiole is entirely black, this species agrees in coloration with 

 S. perjidiosa ; but it is 3 millim. less in length, the pubescence on the head is much 

 less dense, and it is more strongly and more distinctly punctured ; and the third 

 transverse cubital and the second recurrent nervures are obliterated entirely. 



Head as wide as the thorax, transverse in front, rounded behind ; black, coarsely 

 punctured, covered sparsely with a dull silvery pubescence and with rather long fuscous 



biol. cbnte.-amee., Hymenopt., Vol. II., October 1895. 3 bb 



