No. l6.] ORTHOPTERA OF CONNECTICUT. I33 



rounded posteriorly. Wing covers long and narrow, slightly 

 wider at the base, and rounded at the apex. Stridulating organ 

 of male of same general color as the insect, opaque on the left 

 wing cover, the central portion of the right wing cover trans- 

 parent. Anal plates of male short, with the cerci swollen, in- 

 curved, and toothed. 



Key to Species. 



1. Vertex with the cone slender, extending at least 3 mm. 



in front of the eyes 2 



Vertex with the cone stouter, extending less than 3 mm. 

 in front of the eyes 3 



2. Lower face of cone with the apex black (Figs. 54, 55) ; 



a black line on either margin extending half-way to 

 the base ; inner lower carina of posterior femora with 



four or five minute spines ensiger 



Lower face of cone wholly black from the apex to the 

 basal tooth (Fig. 56) ; both lower carinas of posterior 

 femora with a number of rather prominent spines 



exiliscanorus 



3. Cone of the vertex with the sides tapering ; apex usually 



without black margins, rarely with a narrow black 



line (Fig. 57) robustus 



Cone of the vertex with the sides sub-parallel ; the apex 

 rounded and distinctly tipped with black (Figs. 

 58, 59) .triops 



C. ensiger Harris. Sword-bearer. Plate X, 6. 



Fig. 54. Conocephalus ensiger^ male. Dorsal view of vertex. 



Fig. 55. Conocephalus ensiger, vaaX^. Under side of tip of cone 



