HANCOCK 47 



Jamaica (Walker). 



Choriphyllum plagiatum, Walker, Cat. Dermap. Salt., V., 

 845 (1871); Thomas, Rep. U. S. Geol. Surv. Terr., V., 245 

 (1873); Scudder, Index N. Ain. Orth., 76 (1901). 



GEN. TYLOTETTIX, mor.se. 



Related to Diotanis, but having the face retreating, the 

 facial scutellum deeply concave, with high marginal carinse; 

 the vertex strongly convex in front, with a very prominent 

 mid-carina; the anterior margin of the pronotum truncate; the 

 genicular and femoral lobes of the hind femora prominent. 

 Morse, Biol. Cent. Am. Orth., II., 6 (1900). 



TYLOTETTIX SINUATUS, MORSE. 



Plate I., Fig. 4. 

 Face retreating, with prominent carinje; in profile, slightly 

 excavated at the lower edge of the scutellum, deeply (almost 

 rectangularly) so at its upper margin, where the carinas unite 

 to form the very prominent mid-vertical carina, which is con- 

 tinued backward to a point just behind the level of the front 

 margin of the eyes. Seen from above the vertex is twice the 

 width of one of the eyes, the mid-carina projects in front of 

 the eyes nearly the width of xjne of them, and on each side of 

 this the front margin of the vertex is formed by a short trans- 

 verse carina projecting convexly between the mid-carina and 

 the eyes, but reaching neither. Pronotum rather sharply tecti- 

 form, the mid-carina cristate, arched anteriorly, nearly straight 

 posteriorly; front margin truncate; hind process abbreviated, 

 not reaching ^the apex of the hind femora, with rounded, sube- 

 marginat tip; lateral carina.- bent inward, elevated and com- 

 pressed behind the humeral angles, sinuate in both dorsal and 

 lateral views; hind process with oblique elevated rugae, three 

 or four on each side, running inward and forward from the 

 humero-apical carina: nearly to the mid-carina; scapular area, 

 wings, and elytra absent. Fore and mid femora stout, two 

 and one half times as long as wide, strongly carinate, lobate 

 beneath with sinuate margins; hind femora stout, genicular 

 and femoral lobes prominent. 



