THE CANADIAN ENTOMOLOGIST. 229 



fuscous irrorations and a white mark just under the apex of vertex. 

 Eyes red. Genitalia : male valve triangular, two-thirds the length of the 

 ultimate segment; plates long, triangular, their margins straight; apices 

 acute, two and one-half times the length of the valve, slightly exceeded 

 by the pygofers. The margins clothed with fine silky hairs, submargins 

 with coarse bristles arising from black spots. 



Described from one male from Franconia, New Hampshire, taken by 

 Mrs. Annie T. Slosson, and kindly sent me by Mr. Van Duzee. 



Thamnotettix waldana, n. sp. — Form and general appearance of 

 montana nearly, slightly larger and lacking the white markings of that 

 species. Testaceous brown ; the vertex and margins of elytra pale. 

 Length, 9, 5.5 mm.; ^, 5 mm. Vertex transversely depressed, one- 

 fourth longer on middle than against the eye, over twice wider than long, 

 broadly and evenly rounding to the front. Pronotum twice longer than 

 the vertex, rugose on the anterior submargin. Elytra rather long, narrow 

 and closely folded behind ; venation distinct, similar to that of belli. 



Colour rusty brown ; the vertex pale yellow, with a trace of rusty 

 brown near Base, sometimes forming a tranverse band in the male ; the 

 tips of the claval nervures and the costal margin of the elytra, from before 

 the middle to just before the tip, white. Face and below varying from 

 pale to nearly all fuscous. Genitalia : female segment rather long, 

 truncate, with a broad triangular notch containing a strap-shaped tooth as 

 long as the segment. Male valve short, obtusely rounding ; plates three 

 times as long as valve, rather long, spoon-shaped, the margins clothed 

 with long hairs. 



Described from sixteen specimens taken in North Park and Rico, 

 Colo., by the author. 



Thamnotettix orbo7iata, n. sp. — Resembling airidorsuin and infus- 

 cata in general form, but paler. Pale, smoky greenish, with a broad 

 rounding vertex. Length 5.25 mm. Vertex rounding to front, half as 

 long as its basal width, a little more than half the length of the pronotum, 

 one-third longer on middle than against the eye. Head slightly wider 

 than the pronotum ; front parallel margined, narrowing to the clypeus ; 

 clypeus narrow, constricted above the middle. Elytra much longer than 

 the abdomen, broad and flaring slightly behind. Venation as in 

 atridorsum. Colour pale green, slightly tinged with smoky brown. 

 Elytra subhyaline, slightly iridescent ; eyes dark ; ocelli deep green. 

 Genitalia : female segment short, over twice wider than long ; posterior 



