366 PROCEEDINGS OF THE ACADEMY OF [May, 



Scaphura nigra (Thunberg). 



1824. Griyllus] niger Thunberg, Mem. I'Acad. Imp. Sci. St. Pet^rsb., IX, 

 p. 415. [Brazil.] 



Misiones. December 5, 1909. (No. 2.) One male, one female. 



We find no important color differences between the male specimen 

 and individuals from Sapucay, Paraguay, previously reported by us.^ 

 The female, on the other hand, belongs to the variety B of Brunner,^> 

 with the description of which it completely agrees. 



Gymnocera elegans Serville. 



1839. Gymnocera elegans Serville, Hist. Nat. Ins. Orthopt., p. 427. [Buenos 

 Aires.] 



Mendoza, Prov. of Mendoza. Elev. 767 meters. January 5, 

 1909; January 14, 1907; March 19 and 30, 1908; April 4, 9, and 24, 

 1908; May 6, 1908; December 13-20, 1907. Two males, eleven 

 females. 



Chacras de Coria, Prov. of Mendoza. Elev. 936 meters. Janu- 

 ary 1-31, 1907; January 9, 1908; February 4-24, 1907; March 16-30, 

 1907; April 4-24, 1907; December 5 (juv.), 6 (juv.), 9 (juv.), and 17, 

 1907. Ten males, twenty-five females, four immature specimens. 



Potrerillos, Prov. of Mendoza. Elev. 1,368 meters. February 

 23, 1908; December 27, 1907. Two females. 



This very interesting series gives us some desirable and definite 

 information on the extent of variation in this variable species as 

 found at a single locality. All of the specimens of the present species 

 are in the color phase which has metallic blue the most striking color 

 characteristic. The variation here noted are all aside from this base 

 color. The color of the tegmina also remains nearly uniform in the 

 series, varying only moderately in the depth of the ferruginous or 

 hazel of the same, the distal blackish area present on the tegmina of 

 all of the specimens seen. The pale maculation on the facial fastigium 

 and that on the fastigium of the vertex are invariably present, as is 

 the broad patch of the same on the ventral portion of the lateral 

 lobes of the pronotum and the obHque pale line on the pleura. The 

 dorsum of the pronotum may be without pale markings, with a single 

 small median pair or with an increasing number of pairs up to four, 

 these always arranged along the median line and variable in size, but 

 always in symmetrical pairs. Frequently the pairs run together, 

 forming bars, which tendency in a single extreme specimen is so 

 complete that we have paired pale lines extending from the cephalic 



^ Proc. Acad. Nat. Sci. Phila., 1907, p. 377. 

 ^^ Monogr. der Phaneropt., p. 2.58. 



