IOWA ACADEMY OF SCIENCES. 71 



oval around each ocellus, which is connected in front with the pos- 

 terior angle of the triangle. .Pronotum and elytra as in angulifera. 

 much deeper green than in novaeboracensis, a black spot just under 

 the margin of prouotum back of the eye. 



Genitalia; female segment nearly truncate posteriorily with a 

 triangular median production as in niollipes. Male ultimate seg- 

 ment nearly squax'e, valve broad, obtusely triangular, plates thick, 

 slightly divergent, roundingly triangular, their apices attenuate, 

 curved up. Pygofers longer than the plates, keel shaped from 

 below. 



Described from eleven examples from Happy Hollow, 

 ISForth Park and Gunnison, Col., and a pair from Winne- 

 peg, Manitoba. The longer head and heavier marking will 

 at once separate this troirP novaehoracensis, to which it is 

 allied structurally. 



Draeculacephala novaeboracensis Fitch., PI. VII, Pig. 6. 



.(f Aulacizen novaeboracenfis. Fitch. Homop. N. Y. St. Cab. p. 56, 1851. 

 d Tettigonia prasina Walk. Homop. Ill, p. 768, 1851. 

 O Diedrocephala niollipes Prov Pet. Faune Ent. Can. Ill, p. 266, 1889. 

 A Diedrocephala novaeboracensis, Osb. & Ball. la. Acad. So. IV, p. 177. 1897. 



Form or^manitohiana head broader and shorter, wider 

 than pronotum, a pair of black spots at apex and another 

 pair against the eyes in front, the rest of the lines pale 

 brown. Length, 8 mm.; width, nearly 2 mm. 



Vertex in the female equalling the pronotum in length, distinctly 

 shorter than its basal width, slightly less than right angled disc flat 

 or a triiie convex margins thick and slightly rounded to the blunt 

 point. Profile of front very slightly convex, not at all angled 

 below, extending onto the clypeus which is angled above the mid- 

 dle. Pronotum rather short, elytra as in nia7iitobiana. 



Color; pale green, vertex pale lemon yellow, a pair of large tri- 

 angular spots at the apex, separated by an ivory line, a pair of 

 quadrangular ones on the margins in front of the eyes, the ocelli, 

 and sometimes the sutures, black, remainder of the lines brown, 

 somewhat obscure. Face pale yellow, arcs on front brown or fus- 

 cous often obscure, a large black spot above anteunal sockets, a spot 

 on geuae, a dot outside lorae on either side, and often a dot on disc 

 of clypeus, black. Disc of pronotum and elytra pea green, a blcck 

 dot behind the eye below the margin of pronotum. 



Genitalia; Female segment roundingly emarginate posteriorly 

 with an obtuse median looth. Male, valve large roundiugly pointed 

 a third the length of the plates, plates thick, flnaer-like, bluntly 

 pointed, a liitle longer than the ultimate segment, a little shorter 

 than appressed pygofers. 



Specimens are at hand from Vermont, New York, Ontario, 

 Iowa, Nebraska, Colorado, Idaho and Vancouvers Island, 



