1914] The Bee Genus Celioxys. 153 
the segment rather suddenly constricted, near apex with a flattened 
projection on each side of carina (see fig. 3); last ventral segment extend- 
ing a little beyond last dorsal, seen from below subtriangular in outline, 
the lateral edges straight, with only weak hair and without a projecting 
point. 

Fig. 3. C. piercei Cwfd. Last dorsal segment of female 
(last ventral indicated by dotted line). 
Described from one female from Cotulla, Texas, April 17, 
1906, on Verbesina encelioides, F. C. Pratt, collector. 
Type—Specimen: Cat. No. 18219, U.S. N. M. 
The two curious flattened projections on the last dorsal 
segment readily distinguish this from any species known to me. 
Named in honor of Mr. W. Dwight Pierce who was actively 
interested in the work which resulted in the accumulation of 
the splendid collection of Texan Hymenoptera. 
Ceelioxys edita Cress. 
This species was described from a male. Female from 
Texas which I have associated with this species are deplanata 
Cress. and I am inclined to think that edita should be classed 
as a synonym of this species, although the association of sexes 
I have made may be incorrect. 
Ceelioxys sculptifrons n. sp. 
Female. Length about 11.5 mm. Black, with the tegule and the 
legs, except coxe, ferruginous; clypeus rugoso-punctate with smaller 
punctures interspersed, the apical margin with five short teeth; face 
above insertion of antennz coarsely, closely punctured, more sparsely 
so laterad of the ocelli; mesoscutum and scutellum coarsely punctured, 
the punctures except on disk of scutum crowded; lateral teeth of scutel- 
lum short, pointed; sides of face with dense long white subappressed 
pubescence, pubescence on clypeus finer and not so conspicuous; lateral 
and posterior margins of mesoscutum with indistinct lines of white 
appressed pubescence; pleurz with dense long white hairs; wings dusky, 
with the apical margin more densely infuscated; apical margins of dorsal 
