AKT. 4 NEW PARASITIC HYMENOPTERA GAHAN 5 



Male.— hength 1.5 mm. Antennal scape short, slightly swollen 

 beyond the middle, about three and one-half times as long as its 

 greatest breadth; pedicel about one and one-half times as long as 

 broad ; flagellimi of a nearly uniform thickness throughout, conspicu- 

 ously hairy, the hairs about as long as the joints; ring joints very small; 

 first funicle joint about twice as long as thick and slightly longer than 

 pedicel, second to sixth joints successively diminishing very slightly in 

 length, the sixth barely longer than broad; club no thicker than the 

 funicle, about equal in length to the three preceding funicle joints, 

 indistinctly three-jointed, the apical joint conical and sharp at apex; 

 head and thorax with the sculpture not quite so deep as in the female; 

 a bdomen not as broad as thorax, narrowly elliptical in outline, about as 

 long as thorax. Mesoscutum slightly brassy ; remainder of thorax, pro- 

 podeuni, head, and coxae bluish-black; antennae black throughout, or 

 with the flagellum slightly brownish-black; all femora dark brownish 

 on basal half or two-thirds, the remainder of legs pale yellowish 

 except apical joint of tarsi which is brownish; abdomen bluish-black 

 or brownish-black above and below, with a pale spot before the mid- 

 dle. Other characters as in the female. 



Type locality. — Beach, North Dakota. 



Type.— Cat. No. 29440, U.S.N.M. 



Seven females and four males reared by C. N. Ainslie from stems 

 of Stipa comata in August and September, 1923, under Webster No. 

 23390. The host is not known. 



MORMONIELLA VITRIPENNIS (Walker) 



Pteromaliis vitripennis Walker, Ent. Mag., vol 3, 1836, p. 492. 



Pteromalus abnormis Boheman, Ofvers. Svensk. Vet.-Akad. Forh., vol. 15, 1858, 



pp. 58 and 59, pi. 2, fig. 3. 

 Mormoniella brevicornis Ashmead, Mem. Carn. Mus., vol. 1, 1904, p. 316. 

 Nasonia brevicornis Ashmead, Mem. Cam. Mus., vol. 1, 1904, p. 317. 

 Naso7iia brevicornis Girault and Sanders, Psyche, vol.16, 1909, p. 119; vol. 17, 



1910, p. 9. 

 Nasonia brevicornis Brxjes, Can. Ent., vol. 42, 1910, p. 260. 

 Nasonia brevicornis Girault, Mem. Queensland Mus., vol. 2, 1913, p. 307. 

 Mormoniella brevicornis Kurdjumov, Rev. Russ. d'Entom., vol. 13, 1913, p. 5. 

 Lariophagus abnormis Kurdjumov, Rev. Russ. d'Entom., vol. 13, 1913, p. 15. 

 Nasonia brevicornis Froggatt and McCarthy, Agr. Gaz. New South Wales, 



vol. 25, 1914, pt. 9, p. 759. 

 Nasonia brevicornis Girault, Mem. Queensland Mus., vol. 3, 1915, p. 316. 

 Nasonia brevicornis Roubaud, Bull. Sclent. France et Belgique, Paris, vol. 1, no. 4. 



1917, pp. 425-429; Rev. Appl. Ent., ser. B, vol. 5, 1917, p. 157. 

 Nasonia brevicornis Froggatt, Dept. Agr. N. S. Wales, Farm. Bull. 113, 1917, 



p. 28. 

 Nasonia brevicornis Froggatt, Bull. Ent. Res. Lond., vol. 9, 1919, pp. 257-262. 

 Nasonia brevicornis Graham-Smith, Parasitology, vol. 11, p. 372, figs. 14-15. 

 Nasonia brevicornis Alston, Proc. Zool. Soc. LoTid., 1920, pt. 3, pp. 216-241, 



figs. 1.3-20. 

 Nasonia brevicornis Girault, Proc. U. S. Nat. Mus., vol. 58, 1920, p. 214. 



