410 PROCEEDINGS OF THE ACADEMY OF [June, 



longer and less decidedly truncate tegmina in both sexes and in the 

 female by the teeth of the dorsal margin of the apex of the ovipositor, 

 which in fasciatus are rather prominent but not very sharp, while in 

 maculatus these teeth are as prominent and verj' sharp. The ovi- 

 positor in typical fasciatus is also longer and not so rigidly straight. 



From griseus the present species may be readily distinguished by 

 its more robust proportions in even the smallest race, A'', fasciatus 

 abortivus, the different general coloration, and also in characters of 

 the ovipositor which in griseus are much as in maculatus. In fasciatus 

 the lower face is never darker than the interocular portion of the 

 same, while in griseus the lower face is strikinglj' darker than the 

 other portions of the head. 



Certain individuals of this plastic species approach maculatus 

 closely in general appearance, and those before us from Tobermory, 

 Ont., Mount Pleasant, N. J., and Sulphur Springs, N. C, recorded, 

 respectively, by E. M. Walker, Rehn, and Rehn and Hebard as 

 that species, do indeed bear it a close resemblance. There are 

 a number of other specimens in the present series likewise 

 differing from typical fasciatus in being small, highly colored and 

 more or less tawny, from numerous localities extending from New 

 Jersey to North Carolina. No specimens in this series, however, 

 have the peculiar color pattern of maculatus, nor the compact struc- 

 ture and tegminal outline of that species. From the form here 

 discussed to typical fasciatus, every gradation may be found in the 

 material before us. 



The series of specimens from Thompson's Mills, Ga., recorded by 

 Allard as N. canus bear a resemblance to the aberrant individuals 

 discussed above, but are considerably larger and still more highly 

 colored as described in the color notes on the following page. These 

 specimens in consequence have a general fasces very different from 

 that of typical fasciatus. 



Type: 9 ; Pennsylvania. (M. Acrelius.) [De Geer Collection.] 



We here describe a female from Philadelphia, Pa., taken August 

 22, 1898, as this city was probably the exact locality at which the 

 type was captured. 



Size large for the genus, form compact; head rather large, full 

 and rounded, about as wide as the pronotum. Maxillary palpi with 

 penultimate joint about half as long as terminal joint, the latter 

 expanding very gently distad, gently obliquely truncate. Eyes 

 broad-ovate, moderately protruding. Pronotum with length con- 



