Pi)moiia C'oUcj^c, ClarcmuiU. California 121 
nicn, the yellow trianij;ulai-|\' proihucd at meson and two eross-stripes 
on abdomen near base, the lirst naiTowly interfujited at the meson. 
I'ore wmLjs h\aline hut eenti^alU' with a lar^re roinul moonlike spot, 
whose center is opposite the distal pai't ol the marginal vein, the 
stigmal vein not extending distad of its most tlistal circumferential 
point; postmarginal vein distinctly shorter than the stigmal, the 
venation yellow. Antenns dull brownish yellow, the scape and ped- 
icel metallic green (except bulb and base of the former and apex and 
ventral side of the latter). Kunicle 1 two-thirds longer than wide, 
subequal to the pedicel, 2 a little longer than wiile. Club with a dis- 
tinct terminal spine. Mandibles 5-dentate. 
Pronotum large, conical. Propodeum with a distinct median ca- 
rina, otherwise plane, the spiracles minute. Thorax scaly. 
Described from one female received from Wm. A. Hilton and 
collected at Laguna Beach, Southern California ( C. F. Baker). 
Type: Catalogue No. 20173, U. S. N. M., the female on a tag, 
the head, a cautial leg and a fore \^ing on a slide. 
Pcrildinptis chrysopte Crawford, 
lliree females, Claremont, California (C. F. Baker). Compared 
with types. 
PcrUampus caiuidoisis Crawford. 
This belongs in the first division of Crawford's (1914) table, and 
is closely allied with siihcarnuitiis; but in the latter the lower face 
(laterad of the clypeus) is finely cross-wrinkled, but in canadensis 
it bears only a few pimctures (and a line of smaller punctures up 
the eye margin) ; the lower cheeks are similarly sculptured for the 
respective species (that is, in snhcarhuiliis finely striate, and so on). 
The carina referreil to in the table is the carinated eilges of the 
large scrobicular ca\"ity (with the sjiecies bearing it, the face is 
striate, otherwise smooth or mostly so). The carina is weak in 
robertsoiii, w'hich resembles similis, but there is more sculpture on 
the head in the former; in rohcrlsoui the \'enation is pale, black in 
snnilis. The species siihcaiiiialiis and platyyasler are \ery much 
alike, biit the latter has larger punctures on the clypeus and the 
lateral margin is cross-wrinkled, while in the first species the clypeus 
is practically smooth ami with minute scattered punctures; more- 
