NO. 1124. RE VISION OF THE MELA NOPLISC UDDER. 379 



rounded, ferrugineo-testaceous in the basal half, beyond subhyaline 

 with fusco-testaceous veins and cross veins (P. n. volucris, Plate I, fig. e) ; 

 wings in the latter form about as long as the tegmina, moderately 

 broad, hyaline with fusco-olivaceous or fusco-ferrugiuous veins becom- 

 ing increasingly infuscated apically. Fore and middle femora a little 

 tumid in the male; hind femora flavo-testaceous, generally more 

 or less infuscated or fusco-olivaceous in the upper half of the outer 

 face, the inner side and outer carina of the upper face and upper 

 limit of the inner face more or less distinctly and rather narrowly 

 bifasciate or bimaculate with fuscous; lower face flavous sometimes 

 deepening into roseate; upper genicular lobe and base of lower genic- 

 ular lobe blackish fuscous; hind tibiae usually glaucous, sometimes 

 lighter, sometimes darker, occasionally yellowish, with a subbasal black- 

 ish annulus and the apex fuscescent or flavescent, the spines black 

 almost or quite to the base, twelve to thirteen, rarely eleven, in number 

 in the outer series. Extremity of male abdomen feebly clavate, a little 

 recurved, the supraanal plate triangular with slightly convex sides and 

 feebly acutaugulate apex, the median sulcus rather broad and equal, 

 reaching only the middle of the plate and there fading abruptly, the 

 moderately high walls terminating against a feebly transverse plica; 

 furcula consisting of a pair of very slender and brief needles overlying 

 the submedian ridges of the supraanal plate, not nearly so long as the 

 last dorsal segment ; cerci compressed substyliform, moderately broad 

 at base, tapering more rapidly in the basal than in the apical half, 

 bluntly acuminate at tip and about as long as the supraanal plate; 

 subgenital plate narrow and apically narrowing slightly, the lateral 

 and apical margins in about the same plane, the apical margin laterally 

 compressed niesially, so as to simulate an apical tubercle, entire. 



Measurements: P. n. nebrascensis (Colorado). Length of body, male, 

 22 mm., female, 23 mm.; antennae, male, 9.5 mm., female, 7 mm.; teg- 

 miua, male, 6 mm., female, 6.5 mm.; hind femora, male, female, 11.75 

 mm. (Texas), body, male, 22.5 mm., female, 30 mm.; antennae, male, 

 female, 11 mm.; tegmina, male, 6 mm., female, 7.5 mm.; hind femora, 

 male, 13 mm., female, 15.25 mm. P. n. volucris (male, Nebraska; female, 

 Montana), body, male, 23 mm., female, 24 mm.; antennae, male, 9 mm., 

 female, 7.25 mm., tegmina, male, 18.5 mm., female, 18 mm.; hind 

 femora, male, 11.2 mm., female, 12.5 mm. (Texas), body, male, 24mm., 

 female, 28.5 mm.; antennae, male, 10.5 mm., female, 9 mm.; tegmina, 

 male, 18.25 mm., female, 20 mm.; hind femora, male, 13.5 mm., female, 

 15 mm 



Twenty-seven males, 28 females. Medicine Hat, Assiniboia, Septem- 

 ber (U.S.N.M. Riley collection); Fort McLeod, Alberta, September 

 (same); Glendive, Dawson County, Montana (L. Bruuer); Wyoming, 

 Morrison (U.S.N.M. Riley collection); Nebraska, Dodge, October 

 (same; S. Henshaw; S. H. Scudder); Gordon, Sheridan County, 

 Nebraska, September (U.S.N.M. Riley collection); Fort Robinson, 



