804 MB. W. H. ASHMEAD — EEPOET ON THE PABASITIC [Nov. 19, 



AcANTHOPEiA, Ashm., g. n. 



(Type, A. crassicornis.) 



Antennae in $ 12-jointed, subclavate, the flagellum gradually 



incrassated towards tip and without a distinctly defined club ; in 



cJ 14-jointed, as in Diajpria, pedicellate-verticellate ; scutelluna 



conic, ending in a spine and foveated at base ; metathorax armed 



with an acute curved thorn or spine ; wings as in Biapria ; body 



of abdomen short oval, truncate at apex, the petiole short, stout. 



This genus is- separated at once from Diapria and Tropidopria, 

 to which it is most closely allied, by the conic, spined scutellum, 

 by the acute spine on the metathorax, the short oval abdomen, and 

 by the antennal characteristics of the female. 



"ACANTHOPEIA CEASSICOUNIS, sp. n. 



2 . Length 1'4 mm. Polished black ; antennae, except the last 

 5 joints which are dusky or black, and legs red ; metathorax and 

 petiole of abdomen brown, pubescent ; wings hyaline, ciliated. 



The head is globose ; antennae nearly as long as the body, 

 Subclavate or gradually incrassated toward tips ; scape long, half 

 the length of flagellum, stout, extending far above the ocelh; 

 pedicel about half as long as the first flagellar joint ; flagellum 

 stout, the first joint the longest, the following joints to the seventh 

 gradually shortening, but increasing in width, the joints from 8th 

 tapering toward apex. Meson otum with two faint grooved lines 

 posteriorly ; scutellum conic, ending in a spine or thorn, with a 

 deep fovea at base ; metanotum armed with an acute prominent 

 thorn or spine at base above, the metathorax and abdominal petiole 

 rugulose ; body of abdomen oval, much shorter than the thorax, its 

 base overlapping the apex of the petiole ; petiole a little longer 

 than thick. 



(S . Length 1*4 mm. Agrees structurally very closely with the 

 female, except that the delicate grooved lines on the mesonotum 

 are wanting ; sometimes the thorax above anteriorly and at the 

 sides is piceous or rufo-piceous ; the antennae and legs are 

 reddish yellow, the former being about twice as long as the body, 

 pedicellate-verticellate, exactly as in Biapria. 



Balthazar and Mount Gay Estate. Described from one female 

 and four male specimens. 



DiAPEiA, Latreille. 

 Table of Species. 



Females. 



Body uniformly rufo-piceous 2. 



Body mostly black. 

 Thorax entirely black. 



Antennae gradually incrassated, red, the first flagellar 



joint longer than the pedicel B. smithi. 



Thorax anteriorly and the abdomen beneath piceous or 

 dark rufous, not entirely black. 

 Olub of antennas 4-jointed, gradually incrassated, the 

 last joint not twice as long as the penultimate, 

 the last two joints black D. greiiadensis. 



