132 AMERICAN HYMENOPTERA. 



district of southwestern United States and Mexico, possibly 

 into Central America. The cotypes were taken in Colorado ; 

 Huachuca Mountains, Arizona ; and Meadow Valley, Mexico. 

 Nothing is known of the life history, habits or hosts. 



Thyreoclon morio traiisitionalis Vier. 

 Thyreodon morio traiisitionalis Viereck, Trans. Amer. Ent. Soc, 



32, p. 225 1906. 



Black ; face, tnouth parts and legs sometimes more or less fulvous, or 

 tinged with black, with a flavo-hyaline spot iii the discocubital and third 

 discoidal cells of the anterior wing and sometimes a second in the mar- 

 ginal cell of the posterior iving 



Length, 25-35 mm. ; wing, 15-25 mm. ; spread, 32-53 mm. ; antennae, 

 15-23 mm. 



This subspecies differs from morio in having the basal third of the 

 radial cell, most of the discocubital and third apical cells of the ante- 

 rior wing, and sometimes the marginal cell of the posterior wing, fulvo- 

 hyaline ; the size of these spots varies somewhat, and the head and 

 legs are sometimes more or less flavous or fulvous tinged with ferru- 

 ginous as in morio. 



In describing this species I have examined five specimens. 



Type. — University of Kansas. 



This form is too closely related to morio and the fulvo- 

 hyaline spots too inconstant to permit of more than sub- 

 specific rank. Owing to lack of material I am unable to 

 determine the limits of this variation, but T. snoivi is cer- 

 tainly related and may prove to be a continuation of this. T. 

 mactdipennis is also closely related, but the wings and body 

 have a more or less distinct violaceous reflection. 



Distributio7i. — The range of this subspecies is probably 

 similar to that of T. morio, from southern Canada to Central 

 America. The type was taken at Oak Creek Canon, Arizona, 

 at 6,000 feet, and I have before me specimens from Sarcoxie, 

 Missouri, and Riley County, Kansas ; Lake Itasca, Minn. ; 

 and also from Amherst, Mass. The life history, habits and 

 hosts are unknown, but probably agree with those of T. ynorio. 

 The two Kansas specimens were taken June 1 and July 2, one 

 from Minnesota in July, and those from Amherst June 20 

 and 29, while the type was taken in July at 6,000 feet. 



Location of specimens. — University of Kansas, 9 type, Oak 



