1913.] NATURAL SCIENCES OF PHILADELPHIA. 297 



5, 1909; December 10, 1910. (No. 6.) ''At .light" and "flying at 

 night." Nine males, one female. 



This series shows that there is a very slight amount of variation 

 in the subhyaline character of the tegmina and wings of the male. 

 One male has these appendages subinfumate, but between this and 

 the other practically hyaline extreme are all intermediates. In size 

 the male specimens agree very closely with the dimensions for that 

 sex given by Giglio-Tos,i'' while the female is but a trifle under the 

 type measurements. 



The only previous definite record of the species is that from San 

 Francisco, Bolivian Chaco (Giglio-Tos). 



Subfamily VATIX.E. 

 *Oxyopsis lobeter Rehn. 



1907. Oxyopsis lobeter Rehn, Proc. Acad. Nat. Sci. Phila., 1907, p. 159, 

 figs. 3, 4. [Sapucay, Paraguay.] 



Misiones. January 12, 1910; March 22, 1909; May 15, 1909; 

 September 26, 1910. (Nos. 3 [cf] and 4 [9].) Two males, two 

 females. 



This species was previously known only from the female sex. The 

 present females are very similar to the typical specimens, the color 

 of the tegmina being more uniform than in the type and in this respect 

 more nearly resembling the paratype. 



The male sex may be recognized by the following summary of 

 differences from the female sex. 



AUotype: cf ; Misiones, Argentina. Januarj^ 12, 1910. (P. Jor- 

 gensen.) [Acad. Nat. Sci. Phila.] 



Size medium (compared with the female) ; form moderately elong- 

 ate. Head more decidedly transverse than in the female; ocelli 

 large, placed in a triangle; facial shield similar to that of the male, 

 but more decidedly transverse ; antennae slightly longer than the head 

 and pronotum together. Pronotum differing from the female in such 

 respects as found in other species of the genus, the greatest width of 

 the supracoxal expansion contained five times in the length, the 

 greater portion of the collar and shaft subequal in width, the mod- 

 erately marked expansion well rounded; lateral margins sparsely 

 crenulate; median carina and transverse sulcus as in the female. 

 Tegmina slightly more than twice the length of the pronotum, apex 

 rotundato-rectangulate, hyaline with the marginal field coriaceous. 

 Wings surpassing the tips of the tegmina by about the length of the 



« Boll. Mus. Zool. Anat. Camp. Torino, XII, No. 302, pp. 14, 15. 



