AEPHIA. 121 



g. Tegraina and wings rather narrow and somewhat 

 abbreviated (at least in the ? ), the apex of the 



wings hyaline 10. imperfecta, sp. n. 



gg. Tegmina and wings broader, of normal length in 

 both sexes, the apices of the wings somewhat 

 fuliginous. 

 h. Smaller : the median carina of the pronotum nearly- 

 straight; coloured area of the anterior field of 



the wing rather narrow 11. nietana, Sauss., ? . 



hh. Larger : median carina of the pronotum decidedly 

 arched ; coloured area of the anterior field of the 



wing rather broad 12. calida, sp. n. 



ff. Wing-bands very broad, reaching the anal angle. 



g. Apex of wings entirely hyaline, but with the nervures 

 black ; taenia separated from the anterior border 

 by a rather narrow coloured field, which reaches 

 apically nearly two-thirds the length of the wing . 13. ovaticeps, Sauss. 

 gg. Apex of the wings entirely black, or nearly so ; the 

 taenia separated from the anterior border by a much 

 broader coloured field, which reaches about three- 

 fourths the length of the wing. 

 h. More slender, and with the pronotum smoother. 

 General colour of the insect paler ; the fuscous 

 band of the wing occupying the apical third, a 

 little paler apically even in the males. (High 



altitudes and northward.) 14. pseudonietana, Thorn. 



hh. More robust, the pronotum strongly rugose. 

 General colour of the insect darker ; the fuscous 

 wing-band occupying fully the apical two-fifths, 

 of uniform colour throughout, and following 

 around to the anal angle. (South-west United 



States and southward.) . 15. crassa, sp. n. 



A A. Frontal costa narrowed above to one-half or less than its width 

 below the ocellus, sulcate and sometimes carinate above; 

 median carina of the pronotum generally straight, or nearly so, 

 not greatly elevated. 

 b. Frontal costa truncate at the vertex. 



c. Wing-band incomplete, not attaining the costal margin. 

 d. Body unusually deep at the thorax ; the pronotum rather 

 long, finely rugose, the median carina .moderately 



elevated, gently arched; hind femora robust . . . . 16. conspersa, Scudd. 

 dd. Body more slender ; pronotum shorter, the rugae usually 

 coarser, and the median carina much less elevated, very 

 rarely arched; hind femora less robust. 

 biol. cekte.-amee., Orthopt., Vol. II., March 1905. R R 



