1SG4.] 
875 
OH the middle of the sixth segment a yellowish-white mark, slightly 
interrupted in the middle and deeply and acutely indented on its outer 
margins, giving it somewhat the appearance of the letter X dilated, 
with its lower angles prolonged on each side; on the extreme sides of 
the posterior margin of this segment there is a stout acute tooth; the 
apical segment black, deeply emarginate posteriorly, with a rather slen¬ 
der acute tooth in the middle, and with the lateral angles much pro¬ 
duced and obtuse ; apical segment beneath with an acute tooth on each 
side. 
Hah. —Kansas. 'S and $ . Coll. Ent. Soc. Phila. 
Closely allied to A. macuUfrona Smith, but differs principally in the 
form and position of the markings. 
2. A. maculifrons, Smith. 
Anthidium maculifrons, Smith, Brit. Mus. Cat. ii, p. 214, (1854.) 
“ Female. Length 4 lines.—Black, the face has four ovate yellow 
maculge, two on the clypeus, and one on each side of it; a stripe on 
the inferior margin of the mandibles, and a minute spot on the vertex 
above the eyes, yellow. Thorax, a short stripe over the tegulae, and 
four on the margin of the scutellum, a spot on the tegulae anteriorly, and 
the tibiae at their base above, more or less yellow; the thorax, particu¬ 
larly beneath, the face, cheeks and legs have a cinereous pubescence, 
on the tarsi beneath it is rufo-fuscous; the claws ferruginous. The 
basal segment of the abdomen has on each side an angular macula and 
another minute one a little within ; the four following segments have 
on each side, a little within their apical margins, an oblong stripe, 
pointed within, and deeply emarginate anteriorly, almost dividing the 
stripes; the apical segment has two central ovate spots, its margin cre- 
riulated, and laterally subemarginate, terminating in a short tooth ; 
the ventral scopa yellowish-white. 
“ Hah .—United States.” 
I have before me three 9 specimens (2 from Texas, Coll. Ent. Soc. 
Phila., and 1 from Utah, Coll. Mr. Norton) which answer in every 
particular to Mr. Smith’s description quoted above; in addition to the 
characters mentioned therein, these specimens are all 5 lines long, and 
have a small spot on each side of the anterior margin of the thorax; 
the four spots on the scutellum vary in size and are sometimes nearly 
confluent; the wings are hyaline with their apical margins slightly 
