128 PROCEEDINGS OF THE ACADEMY OF [April, 



fossulate on either side of median carina of vertex which 

 is weakly elevated; eyes prominent; margins of median 

 femora very weakly sinuate; pronotum rugoso-scabrous, 

 cephalic margin of dorsum weakly produced over head, 

 median carina with height above humeral angles much 

 as in N. c. floridanus; antennae shorter than in the other 



races.) Nomotettix cristatus borealis E. M. Walker. 



A A. — Vertex strongly projecting in front of eyes, angular excavation 

 beneath it very deep in lateral aspect. 

 B.- — Vertex in lateral aspect broadly rotundato-acute-angulate, 

 dorsal surface of head moderately fossulate on either 

 side of median carina of vertex which is strongly 

 elevated; eyes moderately prominent; margins of 

 median femora with scarcely any sinuation; prono- 

 tum minutely scabrous. 

 C. — Pronotum with median carina less compressed, 

 moderately arcuate with that portion between 

 the humeral angles often distinctly flattened, 

 height above humeral angles 1.2 to 1.7 mm., 15 

 cephalic margin of dorsum moderately produced 

 over head with sides straight or weakly concave. 

 Nomotettix cristatus cristatus (Scudder). 

 CC— Pronotum with median carina strongly compressed, 

 strongly and usually evenly arcuate, height 

 above humeral angles 1.6 to 2 mm., cephalic 

 margin of dorsum more strongly produced over 

 head with sides more or less strongly concave. 

 Nomotettix cristatus compressus Morse. 

 BB. — Vertex in lateral aspect more sharply rotundato-acute- 

 angulate, dorsal surface of head more strongly 

 fossulate on either side of median carina of vertex 

 which is but moderately elevated; eyes very promi- 

 nent; margins of median femora weakly sinuate; 

 pronotum rugoso-scabrous. 

 C. — Other pronotal characters (see C and CC under B) 

 nearly intermediate between those of A r . c. crista- 

 tus and N. c. compressus, height of median carina 



above humeral angles 1.3 to 1.8 mm 



Nomotettix cristatus arcuatus Hancock. 



CC. — Other pronotal characters (see parentheses under A) 



of the V. c. borealis type, height of median carina 



above humeral angles 1. to 1.4 mm. 16 (The 



rugoso-scabrous condition of the pronotum more 



16 The males of the present species are usually somewhat smaller than the 

 females and, as would be expected, the majority of the sex measure nearer the 

 minimum of the dimension here given than do the females. 



16 The types of this race, from Port Orange and Enterprise, Florida, do not repre- 

 sent the extreme development and show decided tendencies toward A", c. arcuatus 

 Hancock. 



