90 Atinals Entomological Society of America [Vol. X, 



Four specimens, two females from Trout Lake, August 6, 

 1913, and September 7, 1910, and two males from Amery, 

 August 13, 1916, and Woodruff, September 8, 1916. 



2247. Ph. ramosus (Baker). 



2249. Acinopterus acuminatus VD. — One specimen from 1)rake ferns( ?) 

 at Camp Douglas, Aug. 1, 191G. 



2262. Thamnotettix cockerelli Ball. — One specimen, Woodruff in 



extreme northern portion of state, Sept. 8, 1910. 



2263. Th. morsei Osb. — Three specimens. Trout Lake in northern 



part of state, Sept. 7, 1916. 

 2265. Th. clitellarius (Say). — Generally distributed. 

 2286. Th. atridrosum VD. — Six specimens from northern k)calities. 

 2292. Th. chlamidatus (Prov.)— Pembine, July 26, 1916. 

 2305. Th. melanogaster (Prov.)— Generally distributed. 



Thamnotettix stramineus n. sp. 

 (Figs. 27, 28, 29, 30, 31.) 



Bright shining straw yellow with two narrow black dashes 

 on margin of vertex. Length 6.5-7 mm. 



Vertex very bluntly angled, one-half as long as broad, and half 

 longer in middle than next the eye. Pronotum one-half longer than 

 the vertex, with humeral angles broadly rounded, posterior margin 

 nearly trtmcate. Elytra one-third longer than the abdomen, cla\ais 

 extending to tip of abdomen. Face broad, roundingly convex and 

 suddenly narrowed to the quadrangular clypeus. 



Color: Vertex yellow, margin with two short transverse dashes 

 and a point on either side, black. Anterior margin of pronotum with 

 yellow band, remainder shiny greenish yellow or darker, scutellum dull 

 yellow. Elytra greenish 3'ellow, subhyaline, shiny; nervures 3'ellow. 

 Beneath yellow in female; black margined with yellow in male; legs 

 3^ellow. Face j^ellow, lateral sutures and antennal pits sometimes 

 black. 



Genitalia: Female last ventral segment as long as preceding, 

 strongly produced with broad, shallow posterior emargination; a black 

 raised disk on each side, embossed with deep converging stritc. These 

 disks joined by a brown or black band in dumb-bell fashion. Pygofers 

 pale with long yellow hairs on posterior two-thirds. Ovipositor slightly 

 darker. Male valve large and strongly convex, apex broadly romided; 

 plates as long as valve, divergent, convexly produced to a sharp black 

 point; pygofers long, black at extreme tips and bearing an unusual 

 number of long white hairs. 



Specimens collected as follows: Ladysmith, Aug. 9, 1916, 

 seven females and four males; Amery, Aug. 13, 1916, two 

 females; Madison, July 22, 1916, one female and two males; 

 Blair, Aug. 8, 1916, one female; Marshfield, Aug. 20, 1916, six 

 females. 



