MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^E. 421 



Thorax ovoid, the prothorax slightly visible from above, usually 

 woolly; mesonotuin a little longer thau wide, smooth without furrows; 

 the mesopleura smooth, uot impressed; seutellum rather suiall, sub- 

 convex, rounded oft" posteriorly without a medial carina, and uuifoveated 

 at base; metathorax short, woolly, or i)ubescent, with an angulated 

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



Front wings pubescent, with submarginal vein terminating iu a 

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

 otherwise entirely veinless. 



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

 thick, woolly, the second segment occupying most of its surface, the 

 following segments being very short. 



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

 spurs distinct; posterior tarsi at least as long as the tibiae ; 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, Trichopria, and Phcmopria 

 closely resembling those of Diaprut. Phccnopria can always be dis- 

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

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

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

 antenujB is generally abrupt; while Trichapria, which is the most 

 closely allied, may be distinguished by the less prominent ridge at base 

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

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

 less pointed at apex. 



The following table will aid in determining our species: ., 



TABLE OF SPECIES. 



FEMALKS. 



Club of antennsB 4-jointed 3 



Club of antenna} 3-joiiited. 

 Antennae and legs reddish-yellow, or yellow, Bometiraes more or less piceous, 



the club black 2 



AntenniB and 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. CALIFORNICA, sp. nOV. 



Recond funiclar joint half the lengtli of tlie first and very little longer than 

 thick, the following joints to club short, moniliform. 



D. UTAHENSIS, sp. nOV. 



2. First funiclar joint thrice as long an thick, the following joints at least twice as 

 long as thick. 



Legs uniformly reddish-yellow D. erythropcs, sp. nov. 



Legs piceous, the slender parts of femora, tibiae, and the tarsi, honey -yellow. 



D. AGROMYZ^ Fitch. 

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

 longer than thick. 

 Legs yellow D. TKx aka, sp. nov. 



