336 HTMENOPTEEA. 



unctate, and fringed with long white hair laterally ; the entire abdomen thickly haired, 

 the segments fringed with silvery pubescence. The legs ferruginous, densely covered 

 with silvery hair ; the tibiae without spines. 



The remaining species are small (from 4-8 millim.), and all have the head more or 

 less black, the thorax ferruginous, and the abdomen black or ferruginous, marked with 

 black. 



a. The head for the greater part black. (Species 41-44.) 



1 (2) . The thorax not incised in the middle incognata, munda. 



2 (1). The thorax incised in the middle. 



3 (4). The abdomen with four golden marks ; length 8 millim. . . . chontalensis. 



4 (3). The abdomen with a golden band; length 4 millim veratpacis. 



^ 41. Sphserophthalma incognata. 



Long. 6 millim. 5 . 



Eab. Panama, Volcan de Chiriqui 3000 feet (Champion). 



Head a little wider than the thorax, rugosely punctured, black ; the front and oral 

 region ferruginous ; the vertex covered with a dense golden pubescence ; the eyes 

 project beyond the hinder part of the head, which is somewhat roundly narrowed, its 

 edges being rounded ; the part behind the eyes equals them in length ; in front the 

 head is, if anything, convex, behind it is semi transverse, almost concave ; the apex of 

 the clypeus is transverse ; the tips only of the mandibles are blackish. The scape of 

 the antenna? is almost bare ; the joints of the nageilum are slightly marked with 

 fuscous above; the third joint is hardly twice the length of the fourth. The thorax 

 above is transverse in the middle at the base, the sides being somewhat obliquely 

 rounded ; the mesonotum and median segment are coarsely punctured, the mesonotum 

 bearing a short golden pubescence ; the median segment is more or less blackish, has 

 a gradually rounded slope, and bears long black hairs ; the sides of the mesonotum are 

 very slightly narrowed and have before the middle a projecting blunt tooth ; the sides 

 of the median segment are bluntly toothed. The base of the propleurse is coarsely 

 punctured ; the mesopleurae bear a whitish pubescence ; the apex of the metapleurse is 

 blackish. The basal segment of the abdomen is dull ferruginous, and is covered with 

 long fuscous hair. The second segment has two oval transverse yellow macula? ; the 

 sides from these are ferruginous, except at the apex; the maculae and the ferruginous 

 part covered with golden pubescence. The third and following segments are covered 

 with long fulvous hair ; the fourth segment and the pygidium towards the apex dull 

 testaceous. The first ventral segment is testaceous ; the base is rounded ; the keel on 

 the apical part is small but distinct, and does not project appreciably at the base. The 



