106 PROCEEDINGS OF THE NATIONAL MUSEUM vol.70 



compared with the type by McDunnough, who at the same tmie 

 answered a series of queries concerning the type. I am firmly con- 

 vinced that the specimens I have described are identical with the 

 type. 



Distribution. — Canada (type). One male and three females from 

 Greeley, Colo., and one male from Vancouver Island, Canada, are 

 in the National collection. 



Subfamily Monodontomerinae 



PLATYKULA, new genus 



Genotype. — Syntomaspis alhiMrta Ashmead. 



When this species was described it was noted by Ashmead that it 

 was "very distinct from any other" in the genus. Indeed, it belongs 

 to a different subfamily, as is indicated above. Inasmuch as it has 

 not been possible to place it in any of the existing genera, it has be- 

 come necessary to erect a new genus. I have proposed the name 

 Platylcula. 



Generic characters. — Antennae 13-jointed with 2 ring joints; funicle 

 6-jointed; occiput with a foraminal margin; thoracic dorsum clothed 

 with appressed silvery-white hairs; mesepimeron without an incision, 

 but with a rather deep depression just beyond the middle; spiracular 

 sulci conspicuous; stigmal vein nearly sessile with hair veins radiating 

 from it; postmarginal vein as long as the combined width of marginal 

 plus the length of stigmal vein; marginal vein three-fifths as long 

 as submarginal; wings hyaline; hind femora smooth on their lower 

 mai'gin; first and second segments of abdomen slightly incised. 



PlafyJcula can be separated from its most closely related genera as 

 follows: Dimeromicrus Crawford does not have white appressed 

 hairs, a depression in the mesepimeron, spiracular sulci, and a short 

 pronotum; it has the third and fourth abdominal segments incised. 

 Idiomacromerus Crawford has a stigmal vein that is nearly half as 

 long as the marginal and only a little shorter than the postmarginal 

 and a spotted wing; it does not have appressed hairs on the body. 

 Liodontomerus Gahan has a long stigmal vein, which in the type is 

 about two-thirds as long as the post marginal and four-fifths as long 

 as the marginal; it does not have spiracular sulci, and a margined 

 occipital foramen. It also differs from Plesiostigmodes Ashmead in 

 some important respects. 



PLATYKULA ALBIHIRTA (Ashmead) 



Syntomaspis albihirta Ashmead, Trans. Amer. Ent. Soc, vol. 14, 1887, p. 187. 



Female. — Length 2.5 mm.; ovipositor 0.8 ram. Entirely black. 

 Head transverse, wider than the thorax, and minutely punctured; 



