890 
[February 
above the clypeus depressed, the antennae inserted in the depressions ; 
clypeus sparsely punctured with a longitudinal obconic yellowish- 
white spot on the disk, which is sometimes obsolete or wanting ; labrum 
clothed with short suberect pale hairs; antennae short, black, slightly 
tinged with green or blue. Thorax with the punctures more or less 
sparse on the disk which has five slightly impressed longitudinal lines, 
the two lateral ones abbreviated in front; posterior half of the tuber¬ 
cles white, anterior half black; tegulae piceous, smooth and shining. 
Wings subhyaline; nervures blackish. Legs black, tinged with green 
or blue, shining, sparsely hairy; extreme base of the tibiae exteriorly 
with a small whitish spot which is sometimes obsolete; apical joints of 
the tarsi rufo-testaceous. Abdomen rather short, ovate, when the seg¬ 
ments are distended it is more or less clavate; convex above, sparsely 
punctured on the disk of the three basal segments and more dense on 
the apical segments; extreme tip of the apical segment acute; ventral 
segments fiat, densely and rather deeply punctured and clothed with 
pale hairs especially toward the tip. Length 2—4 lines. 
Male .—Resembles the female, but the head is smaller, the clypeus 
has on its disk a yellowish-white mark which is suddenly and broadly 
dilated on each side along the anterior margin, somewhat resembling 
a trefoil; the labrum has a yellowish-white spot in the middle, and 
the sixth segment of the abdomen above has on its disk a small more 
or less obtuse tubercle which is, as well as the apical margin of the 
segment, densely clothed with whitish pubescence. 
Mad. —Mass., Conn., N. Y., N. J., Penn., Del., Va., Ill. Numerous 
specimens. Coll. Ent. Soc. Phila., and Mr. E. Norton. 
This pretty little bee is rather common, and varies considerably both 
in size and color. 
2. C. Tejonensis, n. sp. 
Male .—Body dark bluish-green, shining. Head deeply but not 
densely punctured, the punctures very sparse on the clypeus which has 
a whitish subtrefoil mark, similar to that on the S of dupla; the la¬ 
brum sparsely punctured with short pale pubescence, and having on 
its disk a quadrate whitish spot; the antennae rather short, inserted in 
a depression on each side of the face above the clypeus, tinged with 
rufo-testaceous towards the tip. Thorax sparsely punctured, with 
five slightly impressed longitudinal lines as in dupla^ the punctures on 
