new American Hymenoptera. 213 
the end of the externo-medial ; in tevana it exactly meets the 
basal. 
It is proper to state that my interpretation of tevana depends 
upon a specimen from the collection at the Philadelphia 
Academy, which to all appearances is one of the original 
fourteen from which Cresson described. However, my 
specimen has the venter of abdomen black, with a red spot 
on first segment and conspicuous, narrowly interrupted, 
yellowish-white bands on segments 3 and 4; whereas Cresson 
says “venter varied with ferruginous, the third segment 
generally with a yellow spot on each side.” 
Nomada sophiarum, sp. un. 
6 .—Length 83 millim. 
Black, with very pale yellow markings and red legs; more 
hairy than usual, the pubescence silvery white, dense and 
appressed on face, and giving the abdomen a pruinose appear- 
ance. Facial quadrangle longer than broad, slightly narrowed 
below ; eyes light green; mandibles except tips, labrum, and 
face up to level of antennze (except a little black below an- 
tenne) light yellow, the lateral marks ending abruptly at 
level of antenne ; the usual small spots on margin of clypeus ; 
no yellow behind eyes; mandibles simple, extremely broad 
at base; scape cylindrical, much swollen, black above, light 
yellow beneath ; third antennal joint conspicuously shorter 
than fourth; flagellum orange, black or blackish above on 
joints 3, 4, 5, and 11, joints somewhat crenulated, the apical 
one (18) pointed; mesothorax with extremely dense large 
punctures, much covered by hair in front; margin of pro- 
thorax above, tubercles, irregularly semilunar mark below, 
tegulz, two small spots at anterior corners of scutellum, and 
two small marks on postscutellum light yellow. Wings un- 
usually clear, the apical margin dusky, and the light spot 
distinct; stigma ferruginous, nervures fusco-ferruginous ; 
second submarginal cell broad above; transverso-medial 
nervure meeting basal. Legs light red, hind coxe and 
femora black behind except at apex; hair on tarsi pale 
golden; abdomen rather long, first segment red, with the 
base black, and a pair of small black marks about the middle 
subdorsally; remaining segments black, with very broad 
pale yellow bands, not or hardly narrowed in the middle ; 
punctures of abdomen close and distinct; apical plate red, 
very feebly notched ; venter red, with much biack on first, 
fourth, and fifth segments. 
Hab. Mesilla Park, New Mexico, April 16, at flowers of 
Sophia (Cockerell). 
