146 



PROCEEDINGS OF THE ACADEMY OF 



[Jan., 



Fig. 49. — Dichopetala tauriformis n. sp. Ven- 

 tral outline of subgenital plate of female 

 (allotype). (X 4.) 



pattern of transverse sulcus ; lateral lobes as in male. Tegmina very short, 

 broad, sutural margins decidedly overlapping, distal margin somewhat 

 oblique, arcuato-truncate. Supra-anal plate rotundato-trigonal ; cerci 



short, conic, apices slightly 

 elongate, acute; ovipositor 

 very robust, elongate, about 

 two-thirds as long as the 

 caudal femora, dorsal mar- 

 gin considerably arcuate, 

 more sharply so distad, ven- 

 tral margin straight except distad where it is decidedly arcuate, 

 dorsal margin with eight to nine teeth on the distal third, ventral 

 margin with seven to nine teeth on the distal fourth, those on the 

 latter faintly recurved distad; subgenital plate with the chitinous 

 portion completely divided, the lateral sections developed as acute 

 trigonal lobes slightly longer than broad. Cephalic femora very 

 slightly longer than the head and pronotum together. Median femora 

 subequal to the length of the head, pronotum, and tegmina to- 

 gether. Caudal femora subequal to the length of the body, mod- 

 erately robust (for the genus) . 



Paratypic Series. — We consider all of the material before us, other 

 than the type and allotype (three males and seven females), para- 

 typic. 



Measurements (in millimeters). 



Twelve leagues 



east of San Luis 



Potosi, Mex. 



(Type.) (Paratype.) 



Length of body 16.5 15.2 



Length of pronotum . 3.9 3.7 



Greatest caudal width 



of disk of pronotum. 3. 3. 



Length of tegmen 3.5 3.5 



Greatest width of dis- 

 coidal and anal fields 

 of tegmen 3.2 3.1 



Length of cephalic fe- 

 mur 7.9 7.3 



Length of median fe- 

 mur 9.9 9.5 



Lengtli of (;audal fe- 

 mur 19.7 18.5 



c^c^ 



