PROCEEDINGS ENTOMOLOGICAL SOCIETY 



and slightly more than half as long as postocellar line; pronoturn trans- 

 versely rugose above, obliquely striate and with scattered pits laterally; 

 mesonotum transversely, arcuately striate, the striae strongest on meso- 

 scutum and weakest on the scutellum, the latter being smooth beyond the 

 crenulate transverse furrow; mesopleurum coarsely, granularly opaque 

 above the suture, vertically striate below; propodeum coarsely roughened, 

 with some oblique rugosity basally; stigmal club broadly oval; basal vein 

 weak but distinctly indicated; abdomen about as high as long, polished; 

 ovipositor as long as abdomen, strongly upcurved. 



J31ack ; with face, mouth, orbits except a broad interruption at top of 

 eyes, in which is a brownish spot, scape and pedicel below, sides of pro- 

 notum, legs, except hind coxae and base of middle coxae, and tegulae 

 lemon yellow; sides of abdomen more or less brown stained. 



Male.- Length 2.3 mm., abdomen 1 mm. Very like female, with sculp- 

 ture throughout weaker, abdomen very strongly compressed, first tergite 

 in side view much longer than high; stigmal club considerably broader; 

 antennae yellow below throughout. 



Host. Seeds of Amelanchier canadensis. 



Type locality. Pickens, W. Va. 



Other localities. French Creek, W. Va., and North East, Pa. 



Type. Cat. No. 20964 U. S. N. M. 



Described from a considerable series of specimens, including 

 two males, from the three localities, those from Pickens, W. Va., 

 under Quaintance No. 10930, those from French Creek, W. Va., 

 under Quaintance No. 10929, and those from North East, Pa., 

 under Quaintance No. 11014. The two lots of breeding material 

 from West Virginia were collected by Mr. Fred E. Brooks of the 

 Bureau of Entomology, but all specimens were reared by the 

 author at North East, Pa. 



The principal variations are in size, 2-2.6 mm. in the female, 

 and in tha extent of the orbital maculation, some of the speci- 

 mens having the yellow color much less extensive above and 

 with a nearly complete interruption in the cheek. Some of the 

 specimens, especially the smaller ones, have the sculpture less 

 strong throughout. 



Syntomaspis amelanchieris n. sp. 



Female.' Length 2.6 mm., abdomen 1.2 mm., ovipositor 1.5 mm. Head 

 in front view round, slightly wider than long, viewed from above strongly 

 transverse, the temple sharply, roundly sloping, head shagreened, the 

 sculpture finer and fainter on face; width of face equal to height of eyes, 

 the latter parallel within; clypeus polished at apex and with a median 

 tooth; malar space subequal to basal width of mandible; interocellar line 

 half as long as postocellar and slightly shorter than ocellocular; middle 

 antennal joints wider than long. Thorax above shagreened with scat- 



