MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 421 



Thorax ovoid, the prothorax slightly visible from above, usually 

 woolly; mesonotuiu a little longer than wide, smooth without furrows; 

 the mesopleura smooth, not impressed; seutellum rather small, sub- 

 convex, rounded ofit^" posteriorly without a medial carina, and unifoveated 

 at base; metathorax short, woolly, or pubescent, with an angulated 

 prominence at base, and more or less acute lateral angles posteriorly. 



Front wings pubescent, with submarginal vein terminating in a 

 punctiform marginal vein at about one-third the length of the wing; 

 otherwise entirely veinless. 



Abdomen ovate or oval, 7 or 8 segmented; the petiole longer than 

 thick, woolly, the second segment occuj>ying most of its surface, the 

 following segments being very short. 



Legs rather long, pilose; the femora and tibine clavate; the tibial 

 spurs distinct; posterior tarsi at least as long as the tibiie; the basal 

 joint one-third longer than the second. 



The student will have no difficulty in recognizing the males in this 

 genus, as here restricted; but with the females it is quite different, 

 many females in the new genera Geratopria, TricJiopria, and Phwnopria 

 closely resembling those of Diapria. Phcvnopria can always be dis- 

 tinguished by the absence of a fovea at base of the seutellum; Cerato- 

 pria most frequently has two small foveas at base of the seutellum; the 

 head is usually longer than wide, with a frontal sulcus, and the club of 

 anteuute is generally abrupt; winle Triclwpria^ which is the most 

 closely allied, maybe distinguished by the less prominent ridge at base 

 of the metathorax, which is areolated or bifovealated ; the seutellum has 

 one or two shallow fovete at base, while the abdomen is oblong-oval and 

 less x)ointed at apex. 



The following table will aid in determining our species: 



TABLE OP SPECIES. 



FEMALES. 



Club of antennre 4-j ointed 3 



Club of anteunse 3-joiuted. 



AntenniB aud legs reddi.slL-yellow, or yellow, sometimes more or less piceous, 



the club black 2 



Antennae aud legs black. 



Second funiclar joint two-thirds the length of the first, the following joints 

 to the club cylindrical, at least twice as long as thick. 



D. CALIFOKNICA, Sp. UOV. 



Second funiclar joint half the length of the first and very little longer than 

 thick, the following joints to club short, moniliform. 



D. UTAHENSIS, sp. nov. 

 2. F'irst funiclar joint thrice as long as thick, the following joints at least twice as 

 long as thick. 



Legs uniformly reddish-yellow D. kryturopus, si>. nOv, 



Legs piceous, the slender parts of femora. tibi;e, and tlie tarsi, honey-yellow. 



D. AGROMYZ.E Fitch. 



First funiclar joint only twice as long as thick, the following joints scarcely 

 longer than thick. 

 Legs yellow D. texana, sp. nov. 



