424 Bl'LLETIN 45, UMTED STATES NATIONAL MIT8KUM. 



art-i thread-like and nearly as lonj; ii« tlie body, conii>ose<l of 14 jointH, 

 which are very <listinct, equal, oval, a third longer thnn broad, the 

 apical one beinjj a little longer and egg-8hai>ed, and tlie basal one club- 

 shaped, and thrice as long, but scarcely thicker, than the following ones. 

 In the f^iuiale they are shorter and troniposed of 12 joints, which are 

 compacted together, the three last enlarged and forming a kind of knob 

 or club, the last joint nearly as long as the two which precede it, its 

 end bluntly rounded." 



Habitat. — New York and Long Island. 



Reared by Dr. Fitch from Agromyza tritici. 



A single $ specimen, doubtfully referred to this species, is in my 

 collection obtained frc a Mr. Martin Linell. It measures 1.5""" long and 

 is sinnlar to D. erythropuH, but dift'ers as follows: Antennae piceous- 

 black; the seventh funiclar joint is only a little longer and stouter than 

 the sixth; the legs are honey-yellow, with the hind coxse black, and 

 the clavate parts of the femora and tibise piceous. 



Qiapria tezana, s]). iiov. 



9 . Length, 1.8"""'. Cl»«ely allied to D. erythropns, but with the legs 

 more decidedly yellow, the funiclar joints very gradually shortening, the 

 joints after the first only a little longer than thick, the seventh shorter 

 than the sixth and very little stouter, the club much larger. The fovea 

 at base of scutellum is more deeply impressed, the metathorax more 

 pubescent, while the petiole is black; otherwise as in D. erythropm. 



Habitat. — Texas. 



Type in Coll. Ashmead. 



Diapria erythrothorax Ashm. 

 Can. Ent., XIX, p. 196. 



9. Length, 1.5""". Head and abdomen black, shining; thorax, 

 reddish-yellow ; legs and antennse, honey-yellow. Antennae, 14-jointed, 

 the joints pedicellate-nodose, with whorls of bristles; the second flagel- 

 lar joint the longest, clavate, a little curved, the first, being but two- 

 thirds as long as the second, obconic. The scutellum has a fovea across 

 the base, without distinct lateral impressed lines, the apex slightly ridged 

 or compressed. Collar and petiole, woolly. Wings hyaline, strongly 

 fringed; the nervures pale yellow. Abdomen oval, black, polished, 

 shorter than thorax. 



Habitat. — Jacksonville, Fla. 



Type in Coll. Ashmead. 



Diapria colmnbiana, sp. nov. 



9. Length, 2""^. Polished black, impunctured; antennae, except 

 the slender 4-jointed club, and the legs reddish-yellow. Head sub- 

 globose, narrowed behind the eyes. Antennae 12-jointed, long and 

 slender, the first flagellar joint twice as long as the pedicel, slender. 



