1913.] NATURAL SCIENCES OF PHILADELPHIA. 291 



Mendoza, Prov. de Mendoza. Elev. 767 meters. March 20, 

 1908; April 9.and 24, 1908. One male, two females. 



Potrerillos, Prov. de Mendoza. Elev. 1,368 meters. December 

 29, 1909. One female. 



A careful study of Blanchard's original descriptions of the above 

 species leaves no room for doubt but that the two names were based 

 on opposite sexes of the same species, gayi on the male and crenati- 

 collis on the female. 



The present material agrees very fully with these descriptions and 

 also shows that the species varies very considerably in size, the 

 Mendoza male being very much smaller than the others of that sex. 



The original measurements and those of the present series are as 

 follows : 



Length Length Greatest Length Length of Length of 



of of width of of cephahc caudal 



body. pronotum. pronotum. tegmen. femur. femur. 



^ mm. mm. mm. mm. mm. mm. 



Original of gra?/i 44-48'" 



Mendoza 43.5 11.3 2.6 31.5 8. 14. 



Chacras de Coria 52.3 14. 3.3 41. 10.5 18.2 



€hacras de Coria 54. 14.8 3.2 40. 11. 17.7 



? 



Original of crenaiicoMis 44 . " 



Mendoza 46. 13.2 4. 7.2 9.1 13. 



Mendoza 44.7 14. 4.1 8.4 10.5 13.8 



Chacras de Coria 49.5 15.8 4.6 9. 12. 14.1 



Potrerillos 54. 15. 5. 9. 12.5 16.2 



The males before us agree with the original figure, although the 

 tegmina and wings are very slightly less fuliginous. The small 

 Mendoza male has the limbs colored exactly as in the original figure, 

 while the other males have them more brownish, particularly the 

 cephalic ones. The females are all of tones of brownish varying 

 toward hoary gray brown and seal brown. 



The species is known to range from Chile (specifically Santiago, 

 vide Philippi) east to Buenos Aires (Saussure), south to Bahia Blanca 

 (Saussure). 

 ■Coptopteryx constricta n. sp. 



Type: 9 ; Chacras de Coria, Province of Mendoza, Argentina. 

 Elev. 936 meters. April 19, 1907. (P. Jorgensen.) [Acad. Nat. 

 Sci. Phila., type No. 5,216.] 



The differential characters of this very distinct species are given 

 in the keys. 



^° Approximately as above — the original 22-24 lines. 

 " Approximately as above — the original 22 lines. 



