414 PROCEEDINGS OF THE ACADEMY OF [June, 



longer than the caudal femur and seldom under seven millimeters 

 in length. The southern geographic race, fasciatus socius, has the 

 ovipositor as short as or shorter than the caudal femur with scarcely 

 an exception, while the northern prairie race, fasciatus abortivus, is 

 distinguished from fasciatus by the usually shorter and differently 

 shaped ovipositor and almost invariably shorter caudal femur. The 

 letters indicating the distribution of fasciatus socius are S to c, while 

 those of fasciatus abortivus are A to D. 



Color Notes. — The specimens here described are typical in coloration 

 of the majority of specimens of the species found about Philadelphia. 

 General color of head and pronotum clove brown shading to very 

 dark mummy brown on the abdomen, limbs, and exposed portions of 

 the wings. Head with occiput very obscurely striped with four 

 longitudinal lines which are very slightly lighter than the rest of the 

 occiput, eyes very dark mummy brown. Maxillary palpi mummy 

 brown, the terminal segment darker. Tegmina of male translucent 

 mummy brown, in the almost transparent portions shading to burnt 

 umber, discoidal vein ivory white, this marking being so narrow as 

 to be inconspicuous; of female prouts brown, the longitudinal veins 

 Vandyke brown and the proximal portion of the intermediate channel 

 Vandyke brown. The postocular portion of the gense and ventral 

 margin of the lateral lobes of the pronotum are yellowish, these 

 ye,llowish markings very obscure. Ovipositor very dark Vandyke 

 brown. 



A few individuals from the same region are to be found of lighter 

 coloration and in these the color pattern of the species is much more 

 pronounced. In such the dorsal portion of the head, the eyes, and 

 dorsum of the pronotum are prouts brown, the occipital stripes are 

 distinct, while the interantennal protuberance is pale burnt umber 

 shading to russet on the mouth parts. The last joint of the maxillary 

 palpi is russet in these specimens for the proximal third, shading in 

 the remaining portion to very dark brown. The upper portion of the 

 lateral lobes of the pronotum is very dark brown, while the ventral 

 margin of the same is prouts brown. The limbs and ventral surface 

 of the abdomen are russet. This russet shade is frequently found to 

 extend to the dorsal surface of the abdomen in such specimens of 

 light coloration, when this is not the case that portion of the abdomen 

 is clove brown. 



Interesting differences in coloration of series of the present species 

 are found over its entire range of distribution, the more important 

 of which are here considered. A series of large pale individuals from 



