Lawsox: Membracid.T': of Kansas. 45 



SYSTEMATIC TREATMENT OF KANSAS SPECIES. 



The three subfamilies represented in Kansas may be separated 

 by the following key : 



KEY TO SUBFAMILIES. 



A. Scutelhun distinct, not concealed by the pronotum. Centrotinse. 

 AA. Sciitelhini wanting or concealed by the pronotum. 



B. Tibiae, especially anterior ones, foliaceoiis. Membracinae. 



BB. Tibiae not foliaceoiis. Smiliinae. 



Subfamily CENTROTIN^ (Spinola). 



This subfamily, represented in the United States by about half a 

 dozen genera and a few more species, is readily separated from the 

 other subfamilies by the presence of a usually visible scutellum. 

 The genus Microccntrus occurs in Kansas. 



Genus Microcentrus (Stal). 



The members of this genus that occur in the United States have 

 a pronotum that leaves a large part of the scutellum well exposed 

 and ends in a slender terminal process which extends beyond the 

 divided apex of the scutellum. 



Both members of this genus known to occur in the United States 

 have been taken in Kansas. They may be separated by the follow- 

 ing key : 



KEY TO SPECIES. 



A. Prothorax bearing a pair of laterally flattened horns. perdita. 



AA. Prothorax without laterally flattened horns. caryce. 



Microcentrus caryce (Fitch). 



Uroxiphus caryce Fitch, Hornop. N. Y. St. Cab., p. 52, 1851. 

 Centrotus caryce Walker, List Homop., iv, p. 1147, 1851. 

 Microcentrus caryce Stal, Of. Vet. Akad. Forh., xvi, p. 295, 1869. 

 Piiaulocentrus caryce Fowler, Biol. Centr. Am., Homop., ii, p. 159, 1896. 



Funkhouser gives the following technical description: 



Gray-brown mottled with black; entire body broad and flat; pronotum 

 roundly swollen above line of abdomen and wings; wings broadJy tectiform. 



Head perpendicular, twice as broad as long, roughly sculptured, closely jnmc- 

 tate, densely pubescent, deep brown at base; eyes prominent, extending be- 

 yond lateral margins of pronotum, dark brown margined with lighter; ocelli 

 small, pearly, farther from the eyes than from each other, with deep depression 

 between them; clypeus prominent, broad, lighter in color than vertex above, 

 extending far below lateral margin of head. 



Prothorax subspherical, with high median carina, coarsely punctate, pubes- 

 cent ; light brown marked with black on median ridge and above head ; pos- 

 terior margin tnmcate except for narrow process, which projects to angles of 



