1864.] 
408 
ment has a large spot of white pubescence on its disk and the four 
following segments have an apical, white, marginal fringe. Length 
4J lines. 
Male .—Resembles the female, from which it differs as follows:— 
The head is larger and has the face densely clothed with rather long 
yellowish-white pubescence; the abdomen is short, conical, the apex 
obtuse, the extreme lateral apical margin of the sixth segment is pro¬ 
duced on each side into a short blunt tooth; the apical segment pro¬ 
duced into two bifurcate processes, the upper teeth short and blunt, the 
lower teeth a little longer and more acute; on each side of this 
segment there is a stout acute tooth. Length 4 lines. 
^a6.“Conn., N. J., Penn., Md. Five specimens. Coll. Ent. Soc. 
Philad., and Mr. E. Norton. 
Resembles the preceding species, but the superior anal plate of the 9 
abdomen is shorter and the sides not so suddenly narrowed as in that 
species. The males are rather small, short, and robust. 
5. C. moesta, n. sp. 
Female .—Head black, densely punctured, sparsely clothed in front 
and on the cheeks with short pale pubescence; antennse black. Thorax 
black, densely and strongly punctured, the pleura and metathorax 
especially the sides, clothed with rather long whitish hairs; the scu- 
tellum rounded posteriorly and having on each side a short blunt tooth ; 
tegulae black, smooth and shining. Wings subhyaline, their apical half 
dusky. Legs black, shining, the tarsi clothed beneath with short yel¬ 
lowish pubescence. Abdomen conical, black, shining, rather sparsely 
punctured, the four basal segments having a narrow apical white mar¬ 
ginal fringe, that on the third and fourth segments subobsolete; apical 
segment densely punctured, subopaque, depressed towards the tip, 
which is slender, pointed and having on its disk a slight longitudinal 
Carina; the lower plate slender, much longer than the upper, and hav¬ 
ing a slight notch on each side near the tip; ventral segment densely 
and strongly punctured, subopaque. Length 5 lines. 
Hah. —Connecticut. One specimen. Coll. Mr. E. Norton. 
Resembles the two preceding species, but differs in the shape of the 
apical plates of the abdomen, being longer, narrower and more acute 
than in those species. 
