REHN AND HEBARD 73 



lateral margins of dorsum of pronotum^^ in cephalic fifth divergent, then 

 subparallel for an equal distance, for half of the remaining distance diver- 

 gent in a straight line, then strongly divergent with a very slight convexity; 

 these parts of the margins joining without angulation; cephalic margin of 

 dorsum of pronotum gently arcuate-emarginate, caudal margin of same 

 strongly arcuate, ^^ this margin with a decided convexity ventrad and hav- 

 ing the inner edge of this convex area subangulate; lateral lobes of pronotum 

 with length equal to depth, the ventro-cephalic angle obtuse and sharply 

 rounded, the ventro-caudal angle broadly rounded from a point at the 

 middle of the ventral margin of the lateral lobes to the humeral sinus, hu- 

 meral sinus distinct, subrectangulate and rather broadly rounded; a pecu- 

 liar raised callosity occupies the ventro-caudal portion of the lateral lobes, 

 extending from the middle point on the ventral margin to the humeral 

 sinus and bounded on the inside by a nearly straight line between these 

 two points. Tegmina long and narrow, the distal width little less than the 

 mesal width, the tegmina reaching considerably beyond the distal extremities 

 of the caudal femora and rather broadly rounded at the apex;" marginal 

 field of tegmina narrowing rather abruptly from cephalic third. Ovipositor 

 nearly equal to the cephalic femur in length, deep,^^ sharply bent dorsad 

 at base, the bent portion of the dorsal margin and distal portion of the ven- 

 tral margin finely serrate; subgenital plate elongate, lateral margins com- 

 pressed, the plate is sulcate meso-proximad and can scarcely be said to 

 embrace the base of the ovipositor. Cephalic and median limbs slender; 

 the cephalic femora carinate dorso-distad for a very short distance with the 

 distal margin of same slightly but rather sharply produced, genicular lobes 

 dentiform and bearing a small supplementary spine on the ventral margin; 

 cephalic tibiae with proximal extremity somewhat swollen, narrowing 

 gradually below the tympanum which organ is apert; median tibiae slightly 

 expanding proximad. Caudal femora shorter than the tegmina by the 



'5 These margins appear to the naked eye as Scudder has given in his orig- 

 inal description; "Pronotum with strongly arcuate and pronounced lateral 

 carinae, making the disk twice as narrow in the middle as behind." 



'•^ A very slight median emargination of the caudal margin of the dorsum 

 of the pronotum is indicated in this specimen, but this character is exceed- 

 ingly variable, often absent, as is shown by the series of the present species 

 before us, and is therefore valueless. 



" Scudder in his original description gives, "apex roundly and obliquely 

 subtruncate," though the figured specimen shows no trace of oblique trun- 

 cation at the tegminal apex. It is true that the lectotype might be said to 

 fit the original description, but the tegminal apex is more properly described 

 as broadly rounded, and all of the other specimens in the series before us 

 have the apex of the tegmina rounded with no trace of oblique truncation. 



■'* In the present species the ovipositor narrows much more gradually 

 beyond the bent portion than in tulteca, and, in consequence, elegans has 

 that portion of the ovipositor considerably deeper. • 



TRANS. AM. ENT. SOC, XL. 



