1917] The Cicadellidce of Wisconsin 91 



230(). Th. ciliatus Osb.— At Madison on sedges, Aug. 30, 1910. 



2307. Th. decipiens Prov. — In extreme north of state on sedges. 



2308. Th. smithi VD.— General. 

 2312. Th. fitchii VD.— Common. 



2314. Th. nigrifrons (Forbes).— Common in southern part of state. 



2318. Th. inornatus VD. — Northern localities on wild rye. 



Thamnotettix melius n. sp. 



(Figs. 46, 47, 48, 49.) 



A small, shiny, yellow, unmarked species, 4.5-5 mm. in 

 length. 



Vertex short, obtusely angled, less than one-half longer on middle 

 than next the eye, and nearly twice as long as broad. Pronotum nearly 

 twice as long as vertex, humeral angles broadly rounded, and posterior 

 margin nearly truncate. Elytra relatively long, much exceeding 

 abdomen. Nervures distinct. Face short, broad and suddenly nar- 

 rowed to the clypeus which is broadened and well rounded at the apex. 



Genitalia: Female last ventral segment long, lateral angles broadly 

 concave emargination enclosed by a lunular brown area. Ovipositor 

 and pygofers long, the latter with many long pale hairs on posterior 

 two-thirds. Male valve very short, evenly rounded, one-half length of 

 previous segment; plates long triangular, gradually tapered to blunt 

 points, outer margin clothed with pale hairs. 



Color: Vertex and face smoky yellow, unmarked. Anterior margin 

 of pronotum and scutellum, pale yellow; posterior margin darker. 

 Elytra dull pale yellow, clavus washed with brighter yellow. Venter and 

 legs yellow; tarsal claws black. 



A pair from Trout Lake, Vilas Co., August 6, 1913. 



2319. Th. placidus Osb. — At northern points. 



2320. Th. cyperaceus Osb. — General on sedges. 



Thamnotettix vittipennis n. sp. 



(Figs. 3G, 37, 38, 39.) 



Resembling Th. cyperaceus in general appearance. Vertex 

 more rounded and with black marginal line as in Th. smithi. 

 Length 5.5-6 mm. 



Vertex one-half longer on middle than next the eye, evenly rounded, 

 half as long as width between the eyes. Front evenly rounded to 

 clypeus which is widened and almost truncate at apex. Pronotum 

 about one-half longer than vertex, slightly emarginate behind ; humeral 

 angles broadly rounded. Elytral nervures distinct. 



Color: Vertex with broad tawny band covering disc and extending 

 to eyes ; posterior central portion pale with a median suture ; ocelli red ; 

 stripe on margin connecting eyes black. Face light, sutural lines of 

 front black. Pronotum tawny to testaceous, anterior margin lighter. 



