OF WASHINGTON. 165 
Described from 5 females collected in Los Angeles Co., Cal., 
in April by Mr. D. W. Coquillett, from one female marked S. 
Cal. on yellow label, and from one female in the Provancher 
collection labelled Anthidium montivagum, No. 1730. Type No. 
9034 U. S. National Museum. 
Dianthidium provancheri, n. sp. cT. 
Length 6.5 nm. Black, small closely allied to ulkei, ehrhorni and 
simile. Yellow on clypeus, supraclypeal triangle, sides of face almost to 
summit of eyes, upper portion much narrowed, line on outer orbits extend- 
ing one-third of way from eye to summit downward, mandibles except 
margins and tips, elongate spot on each side of anterior margin of meso- 
thorax near scale, scale large, thin with a central spot, spot on outer edge 
of tegulae, elongate narrow line on each side of scutellum separated pos- 
teriorly by the emargination of the scutellum, bands on all abdominal 
segments except sixth and seventh, first segment with line in middle and 
irregular spots laterally, segments 2-5 with bands interrupted medially and 
strongly incised behind, segment 7 black at base, narrowly yellow beyond, 
strongly trilbbed, the tip of the pointed central tooth darkened, outer lobes 
rounded outside but sharply straight inside, margins transparent, central 
lobe of tooth longest; anterior femora above and below, tibiae above with 
reddish yellow stripes, middle and hind femora brownish red beneath, yel- 
low at apex, tibiae yellow above, dark beneath, hind tibiae outwardly yellow 
at base and apex (in some specimens the black portion is nearly obliterated) , 
tarsi reddish brown, first joint with a yellow stripe above, coxae dark except 
for short stripes anteriorly which pass onto the large yellow spines; clypeus 
reddish-brown along margin; punctuation very dense and regular; claws 
slightly bifid ; wings dark, basal nervure commencing before transverse nerv- 
ure, 2d recurrent nervure not ending quite so far beyond apex of second sub- 
marginal cell as first recurrent nervure does beyond the apex of first submar- 
ginal cell; pubescence sparse white and yellow, dark yellow hairs lying 
flat at sides of postscutellum and projecting inward giving the appearance 
of a color line, group of yellow hairs behind base of wings, hair on face 
yellow and on thorax above yellow on pleura and beneath thorax white, 
pale on legs, white and very sparse on dorsum of abdomen, rather plenti- 
ful along abdominal edges and on last ventral segment; middle and hind 
spurs deep red, front spurs pale. 
Described from one specimen in the U. S. National Museum, 
type No. 9033, and one in the Provancher collection, this 
latter numbered 1667 and 327; both specimens are from Los 
Angeles Co., Cal., collected by Mr. D. W. Coquillett. The 
Provancher specimen was labelled Anthidium simile. 
There is a female in the Provancher collection labelled 
Anthidium pallia entre, which I believe to be a new species. 
It is however, very closely related to several other species from 
