, 
176 ENTOMOLOGICAL NEWS. [April, ’08 
33. Thoracic:suture tinged with black... .0. . 0% & ope 34. 
Thoracic suture tinged with reddish-brown .. . : ee Lw. 
34. Anterior end of lateral thoracic stripes curved. . a Berg. 
Anterior end of lateral thoracic stripes not curved; . Saturalis Lw. 
35. Antennz with more than thirteen joints in both sexes. . ... . 36. 
Antenne with thirteenjoints. ......... 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, Wash., 
seems to belong with this species. 
Pachyrhina snowii n. sp. 
Yellow; head orange yellow, shining, somewhat lighter below; the 
