JAMES CHESTER BRADLEY 
2G3 
30. Head blaek; tuljercle on the clypeus strongly transverse. 
glabrella Cresson 
Head concolorous; tubercle on the clypeus less transverse and more 
elevated triangularis Fox 
Females 
Front with a strong median biramose prominence above the base of the an- 
tennae; dark castaneous. Length, 6 mm B. rutilans (Blake) 
Front with a moderate process on either side, immediately above the base of 
each antennae, the two not confluent; testaceous. Length, 4 mm. 
B. bimaculata Fox 
Brachycistis (Brachycistis) atrata (Blake), c? . 
1899. Brachycistis contiguus Fox, Trans. Amer. Ent. Soc., 25 : 282, cf . 
This species is very closely allied to the following;, indeed doubt- 
fully distinct from it. The abdomen of the type of atrata has 
been replaced by an abdomen belonging to a male Mutilla^ that 
has furnished the characters by which Fox distinguishes the 
species in his key. 
Nevada: [Types of atrata and of contiguus, American Entomological So- 
ciety]. California: Claremont, Id', (C. F. Baker), [Cornell University]. 
Brachycistis (Brachycistis) nuda Fox, d- 
1899. Brachycistis nigritus Fox, Trans. Amer. Ent. Soc., 25:282, d ■ 
Genitalia: Sagitta long, narrow, and acute; volsella reduced to a small 
scale; ramus without prominent angles; squama long and slender, with entire 
margin; uncus as seen from the side arched and somewhat thickened medially, 
from above strongly widened toward the apex, which is acutely notched. 
The absence of pubescence described as characterising this 
species, and from which it takes its name, is due to artificial denu- 
dation. The genitalia are described from a specimen from Clare- 
mont, California. 
California: [Type of nudus, American Entomological Society]; Clare- 
mont, 2d, (C. F. Baker), [Pomona College and Cornell University]; Laguna 
Beach, Icf, (C. F. Baker), [Pomona College]. Washington: [Typeoi nigritus, 
American Entomological Society]. Nevada: [Type of nigritus, American En- 
tomological Society]. 
Brachycistis (Brachycistis) dentata new species 
d. Head black; thorax strongly reddish castaneous; abdomen castaneous; 
legs testaceous, the posterior femora brown; antennae lirownish orange; 
sparsely yellowish pubescent; wings hyaline, the stigma fuscous brown, the 
veins pale to dark fuscous. Length, 8 mm. 
TRANS. AM. ENT. SOC., XLIII. 
