72 PROCEEDINGS OF THE ACADEMY OF [Jan., , 



CC- — Length of pronotum equal to two-thirds that of cephalic 



femur. Subgenital plate not produced into lobes. 



falcata n. sp. 



BB.— Cercus with the dorsal margin serrate. (Subgenital plate 



broadly subtruncate with decided lateral substyliform 



appendages.) serrifera n. sp. 



AA. — Cercus with a median fork (either tooth or lobe) . (No access- 

 ory digitiform lobe from base of cercus.) 

 B. — Subgenital plate little produced. (Cercus with median tooth 



simple. Eyes ovate.) castanea n. sp. 



BB. — Subgenital plate distinctly produced meso-caudad. 



C. — Subgenital plate greatly produced. Cercus with the 

 tooth very long, as long as the remainder of the 



shaft, and needle-like distad tauriformis n. sp. 



CC. — Subgenital plate moderately produced. Cercus with 

 the tooth not as long as the d-emainder of the shaft 

 and not needle-like distad. 

 D.- — Cercus with the median tooth blunt and simple. 



(Eyes elliptical.) brevihastata Morse. 



DD. — Cercus with the median tooth depressed and 



lamellate. 



E. — Cercus with the median lobe (i.e., tooth) acute, 



not rounded when seen from the dorsum, 



placed on the external margin of the cercus. 



Pronotum little constricted mesad. General 



coloration green pollicifera n. sp. 



EE. — Cercus with the median lobe generally rounded 

 when seen from the dorsum, placed on the 

 dorsal face of the cercus. Pronotum mod- 

 erately constricted mesad. Coloration varie- 

 gated. 

 F. — Subgenital plate with the distal margin 

 weakly emarginate and the lateral angles 



blunted gladiator n. sp. 



FF. — Subgenital plate with the distal margin 

 decidedly emarginate and the lateral angles 



acute (variable in degree) 



(?) durangensis n. sp. 



G. — Median lobe of cercus decidedly shorter 



than the proximal half of the oercal 



shaft emarginata Brunner. 



GG. — Median lobe of cercus at least as long as 

 the proximal half of the cereal shaft, 

 spoon-like in shape and inverted over 

 the shaft. 

 H. — Margins of the cereal lobe converging 

 distad, apex hardly truncate, ven- 

 tral margin of the lobe decidedly 

 cingulate oreoeca n. sp. 



