200 Tlii:. CANAUIAN KNTOMOLUtilliT. 



SOMi: NKW WESTERN THAMNOTE TTIX (HOMOI'TKRA). 



r.Y K. I). HAI.L, EXP. =;r\TI.-)V. IDCAV. UTAH. 



Thamnotettix venditaria, n. sp. 



Form and colour of decipem nearly. Slightly longer ; green, with 

 three large black spots in a triangle on the vertex. length, 9 . 5-5 mm.; 

 cJ, 4.75 mm. 



Vertex bluntly angulate, witli the apex slightly conically produced, 

 twice wider than long, one-third longer on the middle than against the 

 eye, disc slightly sloping to the rounded anterior margin, front slightly 

 inflated, distinctly wider than in decipcns, scarcely more than half longer 

 than its basal width. Elytra not (juite as long as in decipens, venation 

 similar. 



Colour: Vertex straw-yellow, with a pair of large, oval, black spots 

 extending from behind the ocelli obliquely towards the middle of the disc. 

 Another triangular black spot on apex usually narrowly bisected by the 

 median line. Face pale yellow, with the sutures mostly narrowly black- 

 lined, upper two-thirds of the front smoky, with a light median line and 

 about six abbreviated arcs on either side. The front and vertex separated 

 by an arcuated line. Pronotum green, the anterior margin dirty straw. 

 Scutellum i)ale yellow, a pair of round black spots at the base half 

 concealed by the pronotum. Elytra green, the nervures pale straw. 

 Below straw coloured, with some dusky on the abdomen and the 

 ovipositor black. 



Genitalia : Female segment nearly as long as its basal width, round- 

 ingly narrowing from the base to the truncate apex, which is narrowly 

 marked with black. The lateral angles are scmicircularly depressed, 

 leaving an elevated median disc as wide as the black marking. Male 

 valve Very broad and short, obtusely angular ; i)lates together, long, 

 triangular, their margins slightly concave, and clothed with stiff hairs. 



Described from two females and three males from Utah and Reno, 

 Nevada, collected by the author. This species might easily be mistaken 

 for a Cicadula in colour and marking, but is readily separated by the 

 venation. 



Thamnotettix viriosa, n. sp. 



Size and form of chiragrica nearly. iJroad, stout, powdery green, 

 with five black spots on vertex. Length, 5.75 mm. 



N'ertcx broad and short, nearly three times wider than long, the apex 

 bluntly conical, disc slightly .sloping, broadly rounding to the tumid front, 



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