164 PROC. ENT. SOC. WASH., VOL. 23, NO. 7, OCTOBER, 1921 



Ichneumon extrematis Cresson, Proc. Ent. Soc. Phila., vol. 3, 1864, p. 149. 



Phvgadeuon niger Provancher, Nat. Can., vol. 6, 1874, p. 280. 



Ichneumon brevicinctor Cresson, Trans. Am. Ent. Soc., vol. 6, 1877, p. 150, no. 



140. 

 Ichneumon extrematatis Cresson, loc. cit., p.' 150, no. 141. 



In a series of both sexes reared from pupae of Bleptina sp. 

 under apple bark at Vienna, Virginia (Quaintance Nos. 7922 

 and 14419), all the females are extrematis and the males brevi- 

 cinctor. There is no female in the National Collection having 

 the black trochanter of brevicinctor, while most of the males 

 have. There are three males in which the trochanter is partly 

 white. 



33. (Ichneumon) Amblyteles centrator (Say). 



Ichneumon centrator Say, Am. Ent., vol. 2, 1825, p. 49, PI. 22, fig. 3 (Leconte ed., 



vol. 1, 1859, p. 49, PI. 22, fig. 3). 



Ichneumon Jortis Provancher, Nat. Can., vol. 7, 1875, p. 79. 

 Ichneumon flavicornis Cresson, Proc. Ent. Soc. Phila., Vol. 3, 1864, p. 140. 

 Ichneumon centrator Cresson, Trans. Am. Ent. Soc., vol. 6, 1877, p. 144. 

 Stenichneumon centrator Roman, Ent. Tidsk., 1910, p. 192. 

 Stenichneumon flavicornis Roman, loc. cit. 



There is a large series of both centrator and flavicornis in the 

 National Collection. There can be no doubt that they are sexes 

 of the same species. 



34. (Ichneumon) Amblyteles comptus (Say). 



Ichneumon comptus Say, Boston Jour. Nat. Hist., vol. 1, 1835, p. 229 (Leconte 

 ed., vol. 2, p. 686); Cresson, Trans. Am. Ent. Soc., vol. 6, 1877, p. 165. 



35. (Ichneumon) Plagiotrypes concinnus (Say). 



Ichneumon concinnus Say, Contrib. Maclur. Lye. Phila., vol. 1, 1828, p. 68 



(Leconte ed., vol. 2, 1859, p. 374). 

 Amblyteles ? concinnus Cresson, Trans. Am. Ent. Soc., vol. 6, 1877, p. 194. 



(Excluding female.) 

 Plagiotrypes concinnus Ashmead, Proc. U. S. Nat. Mus., vol. 23, 1900, p. 20. 



Cresson has expressed the opinion that the female described 

 by Say is a Cryptine. We are unable to confirm or disprove 

 this opinion. It may possibly have been a Mesostenine, 

 although the exserted ovipositor is not sufficient evidence to 

 exclude it from the Joppmae. 



36. (Ichneumon) Amblyteles devinctor (Say). 



Ichneumon devinctor Say, Am. Ent., vol. 2, 1825, p. 48, PI. 22, fig. 2 (Leconte 

 ed., vol. 1, 1859, p. 48, PI. 22, fig. 2); Say, Boston Journ. Nat. Hist., vol. 1, 

 1835, p. 230 (Leconte ed., vol. 2, 1859, p. 687). 



Ichneumon tibialis Brulle, Hist. Nat. Ins. Hym. vol. 4, 1846, p. 301. 



