JAMES CHESTER BRADLEY 
265 
Description and figures drawn from a paratype in the collection 
of the American Entomological Society. 
Arizona; [Type, American Entomological Society]. 
Brachycistis glabrella (Cresson), cf. 
Brachycistis alcanor (Blake) is not a synonym of this species, 
as has been previously supposed. 
Colorado: [Type, American Entomological Society, No. 189.3]. 
Brachycistis subquadrata Fox, cf . 
California: [Type, American Entomological Society]. 
Brachycistis ( Brachycistis) micrommata new species 
cf. Black, the tarsi and antennae brown, the latter dark except at base; 
sparsely clothed with somewhat yellowish pile; wings hyaline, slightly in- 
fuscated beyond the stigma, which is piceous; veins brownish j-ellow to pice- 
ous. Length, 8 mm., slender. 
Head polished, with few small punctures; ocelli small, not prominent and 
widely separated, the portion of the vertex on which they are situated not 
strongly elevated, as is usual, a weak transverse depression behind and a longi- 
tudinal one l^etween them; measurements: .17 mm., .3 mm., .38 mm.; fore- 
head with even, slightly convex surface, neither ridged nor tuberculate; in- 
ferior margin of each antennal socket thickened, with a downward projecting 
triangular tubercle; clypeus polished, somewhat depressed, with a raised 
median marginal point, the apex emarginate with a tooth on either side; apex 
of mandibles wide, the two inner teeth of equal size, rather large, a strong 
Carina extending from the inner to the condyle, just before which it is strongly 
but not angularly elevated; antennae slightly crenulate at apex. 
Humeral angles not evident, entirely rounded; pronotum with sparse small 
punctures; mesonotum polished, with very few small punctures, the lateral 
grooves well marked; scutellum convex, its disc polished, with very few small 
punctures, its sides ^\^th a few minute punctulations; disc of post-scutellum 
polished, with one or two punctures, the sides without the usual punctulation; 
mesopleura strongly convex, the surface uniform, with scattered rather coarse 
punctures, the lower posterior part entirely impunctate and shining; pro- 
podeum with a weak median depression, the dorsal surface otherwise impunc- 
tate, without a transverse apical carina, the lateral angles rounded, the posterior 
face strongl}^ declivous, roughened by the insertion of numerous erect hairs as. 
are also the superior parts of the lateral faces. 
A\'ings as showm in figure 15. 
Anterior metatarsus without spines; middle tibia without a group of spines 
on its outer surface, one or two present but so reduced as to be hidden and en- 
tirely inconspicuous; posterior tibia unarmed. 
Petiole strongly nodose, with a short but distinct anterior neck, dorsally 
constricted from the second segment, laterally roughened by the insertion of 
upright hairs; pygidium obtuse, with two or three coarse basal punctures on 
each side, a weak median elevation and weakly margined laterally. 
TRANS. AM. ENT. SOC., XLIII. 
