Synonymic and Descriptive Notes on the Hymenoptera Chalcidoidea. 121 



fore wing, about as long as the greatest width of the posterior wing 

 (at the apex of the marginal vein). Marginal and submarginal veins 

 of the posterior wings subequal, straight. 



Tarsi 4-jointed, the first 3-joints subequal, the distal Joint 

 distinctly the longest; tibial spurs single, straight, weak. 



Male: — The same as the female, excepting that the abdomen is 

 somewhat longer, having parallel sides and the first funicle Joint of 

 the antennae shorter, nearly discshaped, still wider than larg. 



The type species of this genus {Closterocerus cinctipennis Ashmead, 

 1888, p. 104) was originally described as follows: 



„(^. Length 0.04 inch. Head, pleura, sternum, metathorax and 

 abdomen blue ; collar, mesothorax and scutellum golden green, strongly 

 punctate. Head emarginate in front and consequently very thin 

 antero-posteriorly. Antennae browTi-black, hairy. Legs brown, 

 trochanters, tips of tibiae and tarsi pale or whitish. Wings hyaline, 

 fringed with long hairs, forewings with a brown band extending across 

 the stigmal region and another at the apical margin. 



Hab. — U. S." 



This species differs from trifasciatus structurally in the fore wings 

 and antennae; the former have somewhat longer marginal fringes 

 while the latter are hardly compressed fusiform but cylindrical, the 

 pedicel large, the first funicle Joint wider than long, the pedicel wider 

 than the club, the latter with its joints subquadrate, not much wider 

 than long and compressed as in the type species; in the latter also the 

 first funicle Joint is large and distinctly larger thanwide. I have failed 

 to find a ring-joint in cinctipennis and in trifasciatus it is exceedingly 

 short and usually hidden. Otherwise the antennae of the two species 

 agree in regard to the number of joints — the funicle 2-jointed, the 

 club 3-jointed, the third Joint terminating in a spinelike seta. 



I add the following descriptive detail s: The blueness of the parts 

 mentioned in the description is a brilliant metallic blue and the brilliant 

 metallic greenness of the mesoscutum, scutellum and occiput changes 

 to this blue at certain angles of vision. The original description is 

 correct. The punctation of the scutellum is quite as described; the 

 abdomen and occiput are delicately sheened but the metathorax is 

 smooth. Venation dusky yellowish or brownish. The proximal dusky 

 band of the fore wing is more pronounced at the stigmal vein and both 

 bands in some specimens more distinct. 



Antennae differ slightly for the sexes ; in the female the first funicle 

 Joint is more nearly quadrate and the following joints subequal, sub- 

 quadrate, the terminal Joint ending in a long, more prominent spine, 

 the joints more pubescent, the scape moderately long, cylindrical, 

 subequal to the club in length, the pedicel enlarged, oval, by far 

 the thickest Joint, very much longer than the first funicle Joint and 

 twice the size of the second; the first funicle Joint abruptly small, 

 short, and wider than long, about one half the length of the second 

 funicle Joint which is subquadrate but longer than widc from. some 

 aspects, from others nearly globular, subequal to but yet somewhat 



