420 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 57. 



few specimens ruf o-piceous ; mesepisternmn black or with a large 

 yellow spot posteriorly; propodeum black or with a large yellow spot 

 or two smaller ones. 



Distribution. — Fox Point, Alaska (type locality) ; Hociuiam, Wash- 

 ington from Sitka spruce (H. E. Bm-ke); Moscow, Idaho (C. V. 

 Piper) ; Meyers, California (F. B, Herbert) a form with ruf o-piceous 

 hind coxae; Beulah, New Mexico (type-locality of sJcinneri). 



RHYSSA PERSUASORIA (Linnaeus). 



Ichneumon persuasoriiis Linnaeus, Syst. nat., ed. 10^ I, 1858, p. 562. 



Location of type unknown. Discussion based on the specimens 

 listed below which have been compared with many European speci- 

 mens received from specialists. 



The size of the yellow markings especially those of the mesepister- 

 nmn, propodemn and abdomen varies somewhat. In a male and 

 female from Falls Chm-ch, Virginia, the pale marks on the tergites 

 and narrow and almost form bands. The color of the legs is fairly 

 constant but in some specimens the hind pair (especially the coxae) 

 are piceous or blackish. 



Distribution. — Canada; Oswego County, New York; Washington, 

 District of Columbia; Falls Church, Virginia (Middleton); Pisgah 

 Ridge, North Carolina (Fiske); Texas (Belfrage); Whitefish Point, 

 Michigan (A. W. Andrews) ; El Paso County, Colorado (A. B. Cham- 

 plain) ; Waldo Canon, Colorado (W, D. Edmonston) ; Williams Canon, 

 Colorado (Hofer) ; Fort Garland, Colorado (A. D. Hopkins) ; Sco- 

 field, Utah (C. L, D, Bliss); Fieldbrook, California (H. S. Barber), 



Hosts. — ^Parasitic on Xeris sp. in Abies concolor (Champlain), 

 Sirex sp. in Pinus virginiana (Middleton), and reared from fir in 

 connection with Serropalpus (Fiske). Records from the files of the 

 Branch of Forest Insects, Bureau of Entomology. 



RHYSSA LINEOLATA (KIrby). 



Cryptocentrum Uneolatum Kirby, W. Kirby, Fauna Bor. Amer., vol. 4, 1837, 

 p. 260. 



Rhyssa albomaculata Cresson, Proc. Ent. Soc. Phila., vol. 3, 1864, p. 318. 



Epirhyssa crevieri Provancher, Fauna Can. Hym., 1881, p. 449. 



Megarhyssa nitida Merrill not Cresson, Trans. Amer. Ent. Soc, vol. 41, 1905, 

 p. 137. (Merrill does not tell how many specimens he saw or where they 

 came from, but one male which he returned to the United States National 

 Museum labeled as Megarhyssa nitida is certainly lineolata.) 



The type of lineolata is in the British Museum, and it has not been 

 studied by the writer. Type of albomaculata, Cat. No. 1438, Acad. 

 Nat. Sci. Philadelphia. Type of crevieri, yellow label 388, second Pro- 

 vancher collection, Public Museum, Quebec. Discussion based on 

 the types of albomaculata and crevieri and the specimens hsted below. 



The width of the annulus of the antennae varies somewhat, but it 

 never gradually fades out; it is broader in the females than in the 



