242 THE CANADIAN ENTOMOLOGIST. 



from each other on the dorsum by a space equal to three-fourths their 

 greatest width ; proportionally nearer in the ^ . Wings represented by a 

 slender, oblong scale, which does not reach the tympanum. 



Pronotum with both anterior and posterior margins subtruncate ; the 

 sides of the posterior lobe finely and densely punctate. The disk in ^ 

 with the lateral margins slightly divergent only on posterior half; in 9 

 obviously divergent throughout their entire length, so that the posterior 

 margin of disk is one-third wider than the anterior. Median carina 

 distinct and equal throughout, the lateral carinse present but indistinct, 

 especially on the posterior lobe. Occiput, tumid, prominent. Vertex 

 between the eyes broader than basal joint of antennae in ? , of equal 

 breadth in ^ ; the margins somewhat elevated above the slightly depressed 

 centre and continuous with the margins of the frontal costa ; the latter 

 not sulcata in the $ , slightly so above ocellus in $ . Eyes prominent. 

 Cerci of $ oblong, the basal third slightly broader than apical third, the 

 middle narrower ; the apical half but little curved inward, and but slightly 

 excavated on its exterior face. The hind femora shorter than abdomen 

 in ? . 



Colour of dried specimens : Above, dull grayish-brown or tan. A 

 shining black band starts from the middle of posterior margin of each 

 eye, and passes back, covering the upper half of lateral lobe of pronotum, 

 then narrows and curves downward to coxa of middle leg. Below, this is 

 bordered by an ivory-white band, which extends back from cheek and 

 covers lower half of lateral lobe of pronotum, and then curves down 

 between the front and middle coxa. The metapleurite is also ivory-white. 

 Below, the general colour is a dirty yellowish-brown, with the lower face 

 of the femora orange-yellow. The hind femora with their apices black, 

 and with two indistinct blackish bars on the upper and outer faces. Hind 

 tibiae olive-green, annulate with whitish near the base, the spines black. 

 Antennae with the basal half reddish-brown, the apical half fuscous. 



Measurements: Length of body, c^, i6 mm., $ , 24 mm. ; of antennae, 

 (J, 9 mm., 9 , 9.5 mm. ; of tegmina, (5 , 2.7 mm., ? , 4 mm. ; of hind 

 femora, (? , 10 mm., ? , 12.5 mm. ; of hind tibiae, ^, 9 mm., ? , 10.5 mm. 



According to Morse, the following are the chief differences between 

 obovatipennis and Mr. Scudder's rotundipennis : The hind femora of the 

 latter are much stouter, and the sides of pronotum more divergent. The 

 anal cerci. of obovatipennis are flatter, more erect, and more nearly equal 

 in breadth and thickness throughout. The width of supra-anal plate, 



