CHARLES W. HOOKER. 29 



be considered only a subspecies ; breeding experiments may 

 show that it is only a melanic form of bifoveolatus, for the 

 structure agrees throughout, but until we have such evidence 

 it seems wise to preserve it as a subspecies. Provancher 

 states that the female is of a clearer yellow than the male, 

 but I do not have sufficient material to settle this. 



Distribution. — This subspecies has a somewhat limited dis- 

 tribution through the northern United States and southern 

 Canada. Its exact range is not known, but it has been 

 reported, and I have seen specimens, from Colorado and 

 Canada. 



Location of specimens. — American Entomological Society 

 (Philadelphia Academy of Natural Sciences), Canada, Colo- 

 rado. U. S. National Museum, Canada, Colorado. 



OpMon subfuliginosus Ashm. 

 Ophion subhiliginosus Ashmead, Proc. Cal. Acad. Sci., IV, p. 126, 

 n. 11, 9 c?. El Taste, El Chinche, 



Lower California 1894. 



Dalla Torre, Cat. Hym., Ill, p. 199 1901. 



" " Szepligeti, Gen. Ins., Hym., 34'ne Fasc, p. 



32, n. 21 1906. 



Brownish ferruginous ; wings subhyaline, stigma fulvous, nervures 

 black, discocubital vein angularly bent, not appendiculate, nervulus ante- 

 furcal to interstitial, nerve llus broken well below the middle. 



Length, 12-16 mm. ; wing, 8-12 mm. ; spread, 17.5-25 mm. ; an- 

 tennae, 12-18 mm. 



Brownish ferruginous ; head transverse, polished, impunctate, except 

 the face and clypeus which are very finely punctured and clothed with 

 fine white pubescence ; ocelli large, the posterior close to the tops of 

 the eyes ; eyes slightly emarginate ; antennae as long as the body or a 

 little longer, the first flagellar segment as long as or longer than the 

 scape ; clypeus with a cluster of long hairs, and separated from the 

 face by deep foveae ; labrum triangular. 



Thorax smooth, polished, or at the most with sparse microscopic 

 punctures, scutellum tinged with yellow, bordered by lateral keels con- 

 necting it with the mesonotum ; metathorax and lower part of the 

 mesopleurae closely punctate, the posterior face of the mesothorax with 

 two arcuate transverse carinse and two median longitudinal carinas 

 which form a shallow median longitudinal furrow. 



Wings tinged with fuscous, especially in the radial cell; stigma fulvous, 



TRANS. AM. ENT. SOC, XXXVIII. 



