1913.] NATURAL SCIENCES OF PHILADELPHIA. 333 



into spots or areas somewhat as in stolli, but less decided than in that 

 form. 



The Misiones series has the wings more reddish than the other lots, 

 while the Chacras de Coria individuals have these more orange. 



The provinces of Buenos Aires, Cordoba, and Mendoza seem to be 

 the southern limit of the species. 



*Zoniopoda iheringi Pictet and Saussure. 



1887. Zoniopoda Iheringi Pictet and Saussure, Mitth. Schw. Entom. 

 Gesell., VII, p. 357. [Southern Brazil.] 



Misiones. February 8 and 14, 1910; 15 and 21, 1909 and 1910; 

 December 8 and 23, 1910. (No. 18.) Four males, three females. 



These specimens have been compared with individuals from 

 Sapucay, Paraguay, and a female from Rio Grande do Sul, Brazil, 

 received from and determined by Saussure. It is evident that 

 considerable size variation is found in the species, as we have differ- 

 ences in the extremes of the two sexes from Misiones as follows : 



Male. Female, 



mm. mm. mm. mm. 



Length pf body 27. 32.5 35. 49.5 



Length of pronotum 6.2 7.5 8.9 12.2 



Length of tegmen 24.5 26. 32.5 37. 



Length of caudal femur 14.7 17. 19. 25.5 



There is also an appreciable amount of variation in the general 

 form, some specimens, irrespective of sex, being more compressed 

 than others, more noticeably so in the male than in the female, and 

 quite irrespective of locality. A casual examination would lead 

 one to suppose that two species were present, but careful study shows 

 that the extremes cannot be separated on account of the intermediate 

 individuals. The median carina of the pronotum shows some varia- 

 tion in prominence in both sexes. 



In color there is marked variation in the shade of blue on the disk 

 of the wing, in some individuals this being nile blue, flax flower blue 

 (Ridgway) in others, running through heliotrope purple to phlox 

 purple. This variation does not appear to be correlated with sex, 

 locality, size, or degree of compression. The caudal tibiae also vary 

 in general color from cream to scarlet vermilion dorsad, with the 

 ventral surface very pale apple green. 



Information with one specimen is to the effect that the species is 

 gregarious. Its range is known to extend from Chapada, Matto 

 Grosso (Bruner), and Rio Grande do Sul (Rehn), Brazil, to the 

 Misiones. 



