DEYINUS. 447 



The group of D. chiriquensis. 



Bead as in D. melanocephalus ; prothorax scarcely so long as the mesothorax, quadrate 

 (but, if anything, longer than broad), flat above, the sides straight; parapsidal 

 furrows obsolete ; metathorax with a rounded gradual slope. 



Chiefly distinguished from the J), melanocephalus section by the obsolete parapsidal 

 furrows, the longer and straighter prothorax, and the radial nervure being almost obso- 

 lete from a little beyond the apex of the stigma. The antenna? are missing from the 

 example of the single species I include in this group. 



6. Dryinus chiriquensis. (Tab. XIX. fig. 9.) 



Niger, mandibulis, basi et apice abdominis pedibusque rufo-testaceis, geniculis, coxia anterioribus tarsisque 



pallidis, apice femorum posticorum nigris. S • 

 Long. 5 millim. 



Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet {Champion). 



Head wide, longitudinally striolate-reticulate ; sparsely covered with white hair. 

 Prothorax somewhat strongly punctured and covered with long white hair ; mesothorax 

 sparsely pilose, almost impunctate ; metathorax punctured, with six small upper and 

 three large lower arese. Abdomen a little shorter than the thorax, shining, impunctate. 

 Wings in greater part hyaline ; there is a narrow smoky line on the transverse basal 

 and humeral nervures, and a broad stripe at the stigma (which is white except at the 

 apex), and the apex is also slightly clouded ; the radial nervure does not extend much 

 beyond the stigma. 



The group of D. albitarsis. 



Vertex not depressed ; occiput short, convex ; eyes parallel ; third joint of the antennas 

 shorter than the first and about one fourth longer than the second ; prothorax shorter 

 than the mesothorax. 



7. Dryinus albitarsis. (Tab. XIX. fig. 10.) 



Niger, ore, antennis, coxis, trochanteribua, femoribus tibiisque anticis rufo-testaceis, tarsis pallidis ; alis hya- 



linis, fusco-bifasciatis, stigmate nigro, cum basi alba. <$ . 

 Long, fere 3 millim. 



Hab. Guatemala, Panajachel 5000 feet (Champion). 



Antennae stout, longer than the head and thorax united ; almost glabrous. Head 

 finely rugosely punctured, sparsely clothed with short white hairs; eyes margined. 

 Prothorax rugosely punctured (more coarsely so than the head), the pronotum behind 

 not so strongly, and more shining than the rest ; mesonotum aciculated ; scutellum 

 shining, impunctate ; metathorax longitudinally rugosely punctured, with a curved 



