44 Harry Scott Snuth 
Cerceris fumipennis Say. 
1837. Cerceris fumipennis Say, Boston Journal of Natural History, i, 
381. 
1859. ing fumipennis Say, Leconte edition, ii, p. 762. 
1865. Cerceris fumipennis Cresson, Proceedings of the Entomological 
Society of Philadelphia, v, p. 113. 
Glen, August 17 (H. S. Smith) ; Warbonnet canyon, July 20, 
on Melilotus (M. Cary) ; Lincoln, July (H. S. Smith). This in- 
sect is easily recognized by the one-banded abdomen, dark wings, 
and simple clypeus of the female. The specimens before me vary 
from 9 to 15 mm. in length. One male has the median lobe of 
clypeus yellow, the others black. : 
Cerceris pleuralis, n. sp. 
?. Length about 13 mm. General shape of insect robust, ground cols 
black. Cheeks, occiput, and vertex rather finely punctured, the punctures 
rather sparse in the vicinity of the ocelli; distance between posterior ocelli 
about two-thirds that between them and the inner eye margin; carina be- 
tween antennae quite prominent; face and clypeus rather sparsely punc- 
tured; median lobe of clypeus convex, but not strongly so, produced and 
narrowed strongly anteriorly, and truncate or obtusely bilobed at apex, 
where it has the appearance of being leathery; anterior portion of clypeus 
proper with four small lobes or obtuse teeth. Prothorax carinated at the 
sides, the collar rounded and with rather sparse shallow punctures. Meso- 
notum with two short impressed lines anteriorly in the middle and close 
together, rather finely and confluently punctured; scutellum more sparsely 
punctured; mesopleura coarsely and closely punctured and with a spine 
before the intermediate coxae. Postscutellum finely and sparsely punc- 
tured, metathorax coarsely punctured, with a strong median sulcus; basal 
enclosure ridged laterally; metathoracic epimeron partly smooth, partly 
striate. Basal segment of abdomen small, globular, with medium-sized 
rather close punctures, remaining segments with fine rather sparse punc- 
tures, dorsal surface of pygidium dullish; ventral segments with coarse 
punctures laterally. 
CoLoraTion.—The following areas are of a rich yellow: entire face ex- 
cepting apical portion of clypeus and produced median lobe, intra-antennal 
carina, scape in front, triangular dot on cheeks back of eyes, slightly in- 
terrupted band on collar, tegulae, band on scutellum slightly interrupted, 
two small dots on metathorax close to postscutellum, short line on disk 
of first abdominal segment, and a small dot on each side, apical two-thirds 
of second segment, third segment with a narrow apical band expanded 
laterally into subquadrate areas, fourth segment with a narrow band grad- 
ually widened laterally, same on fifth segment; venter piceous; legs in 
general yellow, base of anterior and intermediate femora dark, hind legs 
366 
