294 PROCEEDINGS OF THE ACADEMY OF [May, 



strongly arcuate to the rotundato-obtuse apex, thence nearly 



straight to the anal field. Wing moderately broad, 



the greatest width contained about twice in the 



length, the apex well rounded; hyaline, except for a 



coriaceous strip along the costal margin ; anterior ulnar 



vein biramose. Cephalic median and caudal limbs as 



in the opposite sex. Supra-anal plate of similar form to 



^fovteryx ^^at of the female; cerci elongate, moniliform; sub- 



constrida genital plate large, moderately produced, the distal 



saf Outline margin narrowly arcuato-emarginate. 



of male General color very pale apple green. Ocelli gamboge 



(X?.)^^ yellow; eyes mars brown; antennae ochre yellow. 



Tegmina and wings thalassino-hyaline with the 



coriaceous median trunk of the former ochraceous, the costal margin 



of the latter greenish. Proximo-ventral abdominal segments with a 



broad seal brown edging mesad on the distal margin. Median and 



caudal tarsi clouded with olive. 



Measurements. 



Female (type). Male (allotype). 



Length of body 28.5 mm. 36. mm. 



Length of pronotum 9. " 9. " 



Greatest width of pronotum 3.7 " 3. 



Length of tegmen .»... 4.8" 29 . 5 



Length of cephalic femur 8. " 7.5 



Length of caudal femur 8.7 " 11.9 



In addition to the type and allotype, we have before us the following 

 series: Chacras de Coria, March 29, 1907, one male; Mendoza, 

 Province of Mendoza, April 11 and 20, 1908, one male, two females; 

 La Paz, Province of Mendoza, elev. 504 meters, January 29, 1908, 

 one male. Aside from the fact that the paratypic male is pale ochra- 

 ceous in color, while all of the other specimens seen are greenish, the ' 

 series presents no noteworthy differences. 



Miopteryx rustica (Fabricius). 



1781. [Mantis] rustica Fabricius, Spec. Ins., I, p. 350. [Shores of Pata- 

 gonia.] 



Misiones. April 19 and 30, 1910, September 9, 1909. (No. 7.) 

 Three males. 



The present material fully agrees with Fabricius' original descrip- 

 tion, which, though brief, satisfactorily characterizes the species. 



