1947] 
Cerceridce 
21 
back of ocelli are two transverse yellow marks, almost 
united to form a curved band; basal joint of antennae 
rufous, beyond brown; pronotum with the spots almost 
united; tegulae rufous on inner part, yellow on outer half ; 
yellow spot just below tegulae, and below that is a rufous 
stain ; scutellum, postscutellum, and a stripe each side on 
propodeum, yellow. 
First segment of abdomen fully one-lialf yellow; second 
yellow, with a median indentation ; third broad on sides, 
narrow in middle ; fourth and fifth bands fainter and very 
narrow; second and third segments of venter yellowish. 
Legs almost entirely rufous, tarsi dark; wings brownish 
along front and more definite near tip. 
Middle clypeal lobe swollen, and ending in a small 
median cone-like point, no free edge ; enclosure smooth in 
middle, punctate on sides ; pygidium with tip truncate, 
base about as wide as tip, sides curved so that the widest 
part is a little above the middle, it is fully one and two- 
tliirds as broad as at tip, rather densely granulate; basal 
segment of abdomen fully one-half of the second at tip. 
Length 10.5 mm. 
From Claremont, Calif. (Baker). Type M.C.Z. no. 
23537. C. thione may be the male. 
Cerceris melanthe sp. nov. 
Female. Black ; face below antennae, base of mandibles, 
pronotum, tegulae, postscutellum and a spot on each pos- 
terior side of propodeum, pale yellowish. On abdomen 
an apical band on each segment ; that on first narrow, that 
on second covering about half of segment, angularly 
emarginate in middle, those on other segments less wide, 
but covering about one-half of segment, and more deeply 
emarginate in front ; venter with a large pale yellow spot 
on each side of third segment. Femora almost wholly 
shining black, front and mid femora pale at extreme tips, 
hind trochanters pale, rest of front and mid legs pale, in 
hind legs fully the apical half of the tibiae and the tarsi 
black. Wings hyaline, stigma reddish, beyond is a broad 
brown streak. 
