96 Dr. A. S. Packard, Jr's Revision of the 



surface being coarsely and irregularly rugose, being a net-work of 

 deep fossfe of unequal size, eacb with angular sides enclosed by high 

 thin rugae ; on the hinder portion of the scutellurn two longitudinal rugae 

 enclose two long fossae on each side of and parallel to the mesial furrow. 

 Tegulaeand nervures nearly black, pterostigma dark ferruginous; wings 

 slightly clouded, irridescent. Fore femora brown in front, on the 

 sides black, beneath, a yellow stripe; middle femora yellow at tip be- 

 neath forming a yellow triangular spot; hind pair entirely black; fore 

 tibiae yellow, stained with fulvous on the inside ; middle pair yellow 

 on the inside, a black stripe ; hind tibiae smooth, not spinulated, yel- 

 low, tipped with ferruginous at base and tip where it extends up to- 

 wards the middle of the joint : joints of fore tarsi pale rusty brown, 

 middle and hinder pairs of a much darker brown. 



Abdomen not much longer than the thorax, rather narrowly ovate, 

 convex above, and beneath in the middle. Five pairs of ovate fasciae, 

 not sinuate, on second — seventh segments, decreasing in size from the 

 basal pair; the last pair minute, linear, nearly obsolete. Beyond the 

 basal pair the fasciae are situated far down on the sides, being remote 

 above on the not urn. 



Length of body, .24; head and thorax, .14; abdomen, .10 inch. 



Brunswick, Maine, Packard. W. Va., (Ridings Coll. Eut. Soc. Phil.). 



A little smaller specimen from the same locality has but a single 

 pair of yellow fasciae on the second ring of the abdomen. 



Compared with C. parvulus, this species is of about the same size, 

 and differs in having the prothorax and meta-scutellum banded with 

 yellow. The tegulae are much darker, and also the nervures of the 

 wings, and on the abdomen the fasciae are much longer and nar- 

 rowly ovate. While the legs in (J. parvulus are unusually black, 

 the present species will be easily known by the fuscous band on the 

 front of the fore femora. Likewise the mandibles of 0. parvulus are 

 partially yellow, while in this species they are entirely black, though 

 this is a variable character. 



The unusually coarsely rugose propodeum will further seem to dis- 

 tinguish the species, which is among the smallest belonging to this sec- 

 tion of the genus yet observed. 



It differs also from C. brunneipes £ , in that the fasciae on the ab- 

 domen are broadly separated on the fifth and sixth rings instead of 

 being a continuous band as in that species, and the other fasciae are 

 more ovate, not being sinuate. The metathorax differs entirely, while 

 the femora of C. brunneipes are black brown. 



