Vol. XXviii] ENTOMOLOGICAL NEWS I47 



Scutum grayish- fuscous, darker in middle portion. Scutellum yellow- 

 ish-fuscous. Postnotum grayish-fuscous, lateral margins pale. Hal- 

 teres pale, knob fuscous. 



Legs slender, coxae gray and beset with soft pale hairs ; trochanters 

 and basal part of femur yellow, remainder of femur yellowish-fuscous, 

 dark fuscous at tip, tibiae and tarsi dark fuscous. 



Wings grayish-fuscous, darker apically, yellowish at the base and 

 along cell C and cell Sc, no fuscous costal stripe ; stigma dark brown, 

 preceded by a conspicuous hyaline spot; the vitta occupying cell M is 

 but a shade paler than the ground color, not conspicuous, and does 

 not extend beyond the extreme base of cell ist M^; vein Cu and its 

 basal deflection conspicuously margined with fuscous. 



Abdomen deep yellow, paler beneath with a conspicuous black stripe 

 each side, the latter does not extend beyond the sixth segment; the sev- 

 enth segment entirely yellow, the extreme posterior margin of segments 

 1-6 a trifle paler; 8 and hypopygium brown, appendages yellowish; 

 eighth sternite simple, not emarginate ; ninth tergite short, posterior 

 margin feebly emarginate each side; ninth sternite with rounded emarg- 

 ination, from the lateral margin of which arises a pencil of bristle- 

 like, yellowish hair, and a carina-like process at the base of the median 

 suture; upper appendages broad, leaflike, inflexed, the lower append- 

 ages form an ascending irregular lobe. 



$ . — Length 12 mm. ; wing 19 mm. Aside from its larger size the 

 female differs from the male by the much shorter antennae, which 

 scarcely reach the middle of the mesonotum, first flagellar joint yel- 

 lowish-red, flagellar joints cylindrical with slight basal enlargement. 

 Ovipositor brown at base, blades yellow, upper valves very long, al- 

 most linear, the lower valves more than one-half the length of the 

 upper valves. 



Holotype, $ . Foothills of Mt. Shasta, California, May 20th, 

 1914 (A. Kusche). 



Allotype, 9 , May 26th, 1914, topotypic. 



Paratype, $, Sonoma County, California, April i8th, 1914 

 (A. Kusche). All in the author's collection. 



Readily distinguished from the other members of this group 

 with unicolorous antennal flagellum ; from fiilvolincata 

 Doane by only the three basal joints of the antennae yellow^ 

 and the veins in apical part of wing not margined with fuscous. 



1 A male specimen in my collection from Los Cerritos, California, 

 and received from Mr. M. C. Van Duzee, I unhesitatingly refer to 

 this species, although only three basal joints of the antennae are yel- 

 low. The type of the species is a female. 



