452 PROCEEDINGS OF THE ACADEMY OF [April, 



one~and one-third times in greatest width; cephalic margin narrowly 

 subtruncate, lateral margins oblique sub-arcuate ; caudal margins 

 slightly arcuate, caudo-lateral angles well rounded, placed distinctly 

 caudad of the middle; disk of pronotum deplanate dorsad, narrowly 

 yet considerably declivent laterad, oblique sulci decided. Tegmina 

 about four and one-third times length of pronotum and slightly more 

 than three times as long as greatest tegmina! width, subequal in width : 

 costal margin straight except briefly proximad and distad where it is 

 arcuate, apex rounded, costal field rather narrow, anal sulcus joining 

 sutural margin about two-fifths length of same from base. Wings 

 with four to five complete and six incomplete ulnar rami. Supra-anal 

 plate large, produced, narrowing, apical margin shallowly obtuse- 

 angulate emarginate, lateral angles rectangulate; cerci elongate, 

 subdepressed, terete. 



9. Size medium to rather large; form elongate elliptical, mod^ 

 erately depressed; surface glabrous. Head with only portion of 

 occiput visible from dorsum; interspace between eyes narrower than, 

 or subequal to, interspace between antennal bases; antennae not 

 reaching to tips of tegmina. Pronotum as in male. Tegmina 



exceeding apex of abdomen, about three and 



\~ /* N< \|/ > ' one-third to three and one-half times length of 

 *■— -/ pronotum or greatest tegminal width, form as 



Fl ?op 2 ^r d o? c °^5t in male but less elongate. Wings with three 

 Saussure. Supra- to five complete and five to six incomplete 

 and ^(2)° Male- umar rami. Supra-anal plate sub-trigonal, 

 For tin, Mex.: fe- produced mesad, produced portion broadly 



rounded and margin arcuato-emarginateJaterad, 

 distinct medio-longitudinal carina present; cerci as in male. 



General color varying from tawny ochraceous (cJ 1 ) to dull ferru- 

 ginous ( ? ), pronotum of female more or less marmorate with chestnut 

 and costal portion of both sexes paler than general color. Limbs, 

 ocelli and mouth parts ochraceous. Abdomen becoming more or less 

 blackish distad. 



Measurements. — d\ Length of body 14.5-16 mm.; length of 

 pronotum 3.8-4; greatest width of pronotum 4.8; length of tegmen 

 17; greatest width of tegmen 5.2: 



9. Length of body 14.8-21. 5 32 mm. ; length of pronotum 4.2-5; 

 greatest width of pronotum 5.2-6 ; length of tegmen 16.2-17.8; great- 

 est width of tegmen 4.6-5.8. 



32 This specimen has the abdomen abnormally distended. 



