176 ENTOMOLOGICAL NEWS. [April, '08 



33. Thoracic suture tinged with black 34. 



Thoracic suture tinged with reddish-brown .... circumscripta Lw. 



34. Anterior end of lateral thoracic stripes curved .... wulpiana Berg. 

 Anterior end of lateral thoracic stripes not curved . . . saturalis Lw. 



35. Antennae with more than thirteen joints in both sexes 36. 



Antennae with thirteen joints breviorcornis n. sp. 



36. Stigma yellowish-brown, apex of the wings not distinctly infuscated. 



eucera Lw. 

 Stigma dark brown, apex of the wings distinctly infuscated. 



polymera Lw. 

 Pachyrina californica n. sp. 



Yellow ; head wholly black, opaque ; sides of rostrum somewhat yel- 

 low ; palpi black ; first three segments of antennae yellow, the third 

 sometimes darker toward the tip, other segments black, rather swollen 

 at the base, with short stiff verticles ; in the female, the 4th and 5th 

 segments of the antennae are more or less yellow ; ground color of 

 the thorax bright yellow, shining, stripes shining black, median stripe 

 broad, not extending back of the suture, lateral stripes reaching to 

 the scutellum, not curved anteriorly ; thoracic suture black in the mid- 

 dle ; dorso-pleural suture black ; dorso-pleural membrane yellow ; col- 

 lare yellow with median and lateral black spots ; pleura black anter- 

 iorly, yellow posteriorly; scutellum and metanotum yellow with a 

 median black line ; halteres yellow, knobs brown ; coxae black ; fem- 

 ora and tibia yellow, black at the tips ; tarsi blackish ; abdomen yel- 

 low with rather broad black lines dorsally, ventrally and laterally ; 

 segments 6, 7, and 8 sometimes almost wholly black ; hypopygium red- 

 dish brown ; posterior margin of the eighth sternite of the male pro- 

 duced into two small triangular processes which bear dense tufts of 

 rather long reddish-yellow hair; posterior margin of the large ninth 

 tergite blackish, with a deep semi-circular incision, posterior lateral 

 margins with a small deep U-shaped incision ; ovipositor reddish-black 

 at the base, valves short, straight, blunt ; wings hyaline with a faint 

 whitish spot in the region of the stigma; veins, stigma, and more or 

 less distinct spots just back of the stigma, over the origin of the prae- 

 furca and over the base of the basal cells brown; a faint hardly per- 

 ceptible cloud in all the cells ; petiole of the 2nd posterior cell as long 

 as the anterior cross-vein. Length, male, 15 mm, wing 13 mm., fe- 

 male, 18 mm., wing 14 mm. 



Hab. Stanford University, Cal. Many males and females. 

 A single poorly preserved specimen from Pullman, \Vash.. 

 seems to belong with this species. 



Pachyrhina snowii n. sp. 



Yellow ; head orange yellow, shining, somewhat lighter below ; the 



