ltj THE CANADIAN ENTOMOLOGIST. 



than the pronotum ; front narrow, the margins straight, elytra long and 

 closely folded behind, venation indistinct. 



Colour : vertex and face creamy yellow, a pair of approximate spots 

 on the apex only partly visible from above, and a narrow basal line on the 

 vertex black. Pronotum behind the eyes ivory white or slightly yellowish- 

 white ; that part included between the eyes deep black, scutellum black, 

 elytra black, an elongate saddle extending from the apex of scutellum to 

 the apex of clavus, a yellow stripe along costal margin narrow at the base, 

 gradually widening until it occupies half the corium, then abruptly 

 terminating just before the apical cells ; face and all below yellow, the 

 antennal sockets black. 



Genitalia : female segment rather long, lateral angles slightly round- 

 ing, posterior margin triangularly emarginate, with a median strap-shaped 

 tooth as in clitellaria, but shorter. 



Described from a single specimen from New York City (H. C. Park). 



Thamnotettix mendica, n. sp. — Form and general appearance of belli. 

 Larger, and with a longer and more distinctly pointed vertex, with a pair 

 of rather large approximate black spots at the apex. Length, °. 6 mm., 

 c£ 5 mm. ; width, 1.75 mm. 



Vertex a little over half broader than long, two-thirds longer on 

 middle than against eye, apex slightly conically pointed ; front narrow, 

 ihe margins straight, sloping directly to the clypeus ; pronotum over half 

 longer than vertex. Elytra long, inclined to be flaring, venation distinct, 

 similar to that of belli and geminata. 



Colour : vertex yellow, a pair of large triangular approximate black 

 spots on the rounding margin of vertex and front; face pale lemon yellow, 

 the sutures fuscous, a few brown arcs on front not extending up to the 

 black spots. Pronotum white or greenish-white back of the eyes, anterior 

 margin between the eyes brown. Elytra brownish subhyaline, with a 

 coppery reflection, the nervures greenish-white, the costal margin before 

 the apical cells broadly subhyaline white. 



Genitalia : female segment half longer than the penultimate, the 

 lateral angles rounding, posterior margin triangularly excavated one-third 

 the depth of the segment. From the bottom of this excavation arises a 

 rather broad strap-shaped tooth, which exceeds the lateral angles ; male 

 valve rounding, nearly semicircular, almost as long as the ultimate 

 segment ; plates three times the length of the valve, convexly rounding at 

 the base, then concavely narrowing to the acute apices. 



