104 
Psyche 
[April 
NEW MEG ACHILID BEES . 1 
By Theodore B. Mitchell, 
The species which are described below were found in two 
series of unidentified material, one in the collection of Professor 
W. M. Wheeler at the Bussey Institution, and the other in the 
collection of the Museum of Comparative Zoology at Cambridge. 
Lithurgus bruesi n. sp. 
d 71 . Head broader than long, the eyes converging slightly 
below, pubescence entirely greyish- white ; supraclypeal plate 
shining, almost impunctate medially, with scattered punctures 
laterally; clypeus impunctate medially except for a few scat- 
tered punctures, but closely punctate laterally, practically 
rugoso-punctate, the apical margin smooth and entire; labrum 
very peculiar and distinctive, having a deep longitudinal im- 
punctate channel or concavity, which has on either side midway 
a strong triangularly pointed spine, the distance from the bottom 
of the concavity to the tip of the spine being equal to about half 
the length of the labrum; mandibles ordinary, with three sub- 
equal teeth; cheeks about as broad as width of eye, the posterior 
margin above quite sharp but hardly carinate, closely and finely 
punctured; vertex slightly rounded, closely and rather finely 
punctured, the punctures between the eyes and ocelli large, 
deep and distinctly separated; lateral ocelli very slightly nearer 
edge of vertex than to nearest eye; antennae shining above, 
dark, the joints more ferruginous apically, dull brownish-red 
below, the joints slightly longer than broad, the first joint of the 
flagellum and the basal half of the second joint, below, blackish. 
Thorax with pubescence entirely greyish- white, longer at 
sides and behind; mesonotum and scutellum extremely densely 
and quite finely punctured, the punctures of the pleura also 
Contribution from the Department of Zoology and Entomology, North 
Carolina State College, in cooperation with the Entomological Laboratory 
of the Bussey Institution, Harvard University (Bussey Institution, No. 273). 
Published with the approval of the Director of the North Carolina Ex- 
periment Station as paper number 15 of the Journal Series. 
