298 PROCEEDINGS OF THE ACADEMY OF [May, 



collar of the pronotum, form of the apex of the same similar to that 

 of the female. Supra-anal plate transverse trigonal, with the 

 immediate apex narrowly emarginate; cerci moderately elongate; 

 subgenital plate considerably elongate, the margins converging 

 distad, styles rather short, closely placed, depressed. Cephalic 

 limbs in structure and armament similar to those of the female, but 

 slenderer and with the spines of the external margin of the tibise 

 sometimes numbering eleven. Median and cephalic limbs similar to 

 those of the female, but slenderer. 



General coloration essentially as in the female with the following 

 exceptions: base color more apple green than oir green; region of 

 the occiput washed with mars brown, the eyes of the same color; 

 tegmina hyaline with the coriaceous marginal field apple green, 

 narrowly edged with cream color, costal margin of the wings and the 

 apex of the same weakly washed with apple green, faintly edged with 

 cream; pronotum ochraceous buff on the shaft (probably due to 

 drying out) ; median and caudal limbs pale clay color distad passing 

 into pale oil green. 



Measurements. 



Length of body 45 . 5 mm. 



Length of pronotum 14. " 



Greatest width of pronotum 2.7 " 



Length of tegmen 32 . 5 " 



Greatest width of tegmen 6.5 " 



Greatest width of marginal field 2. " 



Length of cephalic femur 9.8 " 



Length of median femur 9.2 " 



Length of caudal femur 12.5 " 



Parastagmatoptera unipunctata (Burmeister). 



1838. M[antis] unipunctata Burmeister, Handb. der Entom., II, Abth. II, 

 pt. 1, p. 540. [Brazil.] 



Buenos Aires. May, 1911. One female. 



Embarcacion, Salta. April, 1911. One male. 



This species has been recorded from Buenos Aires (Burmeister) 

 in addition to the type locality, while a single female in the collection 

 of the Academy is labelled "Parana River." Burmeister states that 

 this is the most abundant species of Mantis about Buenos Aires. 



Stagmatoptera hyaloptera (Perty). 



1830-1834. Mantis hyaloptera Perty, Delect. Anim. Artie, p. 117, pi. 23, 

 fig. 6. [Amazon River.] 



Jujuy, Province of Jujuy. April, 1911. One male. 



