SPH^ROPHTHALMA. 321 



Head, a little wider than the thorax, quadrate, convex in front, more deeply concave, 

 at the base; slightly dilated behind the eyes, where it is more than double their 

 length ; the keel behind not very acute, not extending on to the vertex ; ferruginous, 

 rather strongly punctured, covered with silvery and golden pubescence ; the centre of 

 the vertex blackish. Over each antenna there is a transverse carina extending from the 

 base to the eyes, their inner edges forming a triangular tooth. The mandibles are 

 ferruginous, black at the apex. The antennae are ferruginous, infuscate towards the 

 apex, the scape glabrous; the third joint about twice the length of the fourth. Thej 

 thorax is ferruginous, quadrate, hardly narrowed in the centre ; the sides rough, but 

 not denticulate; the base slightly rounded, the apex with a sharp oblique slope; 

 coarsely punctured above, and sparsely covered with a short silvery pubescence ; the 

 propleurse obscurely striated ; the mesopleurse excavated, shining, glabrous; the meta- 

 pleuree with a microscopic white pubescence. The basal segment of the abdomen is 

 ferruginous, with a black or fuscous-black mark across the apex. The second segment 

 is golden, with the apex black, the black dilated in the middle ; at the base are two 

 oval black marks and in the centre a square one, incised in the middle. The other 

 segments covered with golden pubescence. The ventral segments are ferruginous; the 

 basal segment is depressed in front and behind, rising in the middle, the keel distinct ; 

 the punctuation on the second segment is obscure. The legs are reddish, covered 

 with white hair. 



This species is allied to S. chiapa, Blake, but is, I think, distinct, the latter having 

 the basal segment of the abdomen black ; the antennae with only the scape and the 

 second joint rufous; the black marks on the base of the second segment differently 

 shaped, the central one being rounded (not incised) at the apex, &c. 



^6. Sphaerophthalma damia. (Tab. XIV. fig. 9, $ .) 



Long, fere 12 millim. $ . 



Hab. Mexico, Amula in Guerrero 6000 feet (H. H. Smith). 



Head ferruginous, shorter and a little wider than the thorax, rounded in front, almost 

 transverse behind, punctured, sparsely covered with long black hair ; a patch of pal© 

 golden pubescence on either side of the vertex touching the eyes, there being another 

 and larger patch behind them; the keel distinct, but not projecting much, and not 

 sharply developed above. The apical third of the mandibles black, the middle deeply 

 excavated. The antenna? are stout ; the flagellum ferruginous, and covered with golden 

 hair; the third joint is more than twice the length of the fourth. The thorax i& 

 entirely ferruginous ; above coarsely punctured, and bearing long black hair ; the, 

 middle broadly contracted ; at the base of the contraction is a tubercle and a blunt 

 tooth ; on the sides beyond it are seven blunt teeth. The median segment has a sharp 

 oblique slope, and it has the punctures much larger, rounder, and deeper than those on 



biol. centk.-amee,, Hymenopt., Vol. II., November 1894. 2 tt 



