214 THIRTIETH REPORT ON THE STATE MUSEUM. [102] 



extent in each sex. They also show variation in the shape of 

 the subreniform, that of the female being more oval than in 

 the type, and of the male, subquadrangular. 



It is believed that the tawny band of the primaries beneath, 

 separating the marginal and median black bands, may afford 

 valuable differential features in closely allied species of CATO- 

 CALA. Thus, in the four examples above referred to, the band 

 is sharply and almost rectangularly reflected on vein 4, thence 

 running direct with regular contraction to the internal margin. 



In C. crat&gi, the form and course of this band are similar 

 to that of C. pretiosa, but its breadth is less. 

 ^In one example of C. prceclara, the band is less acutely bent 

 between veins 8 and 4, and again sharply between veins 1 and 

 2, from which point the lower portion of the median black 

 band is continued very narrowly to the inner margin. 



In one C. fratercula, female, the tawny band is regularly 

 curved, with the exception of a moderate outward bending on 

 the submedian fold. 



Mr. Peck informs me that he captured a number of ex 

 amples (12) of pretiosa last year (1876) at Morristown, N. J. 

 For several years the species had been in his collection under 

 the name of polygama. This latter species had never, to his 

 knowledge, been taken in the vicinity of New York, but he 

 had received it (not identified at the time) from Canada. Two 

 examples of C. pretiosa were also taken by Mr. P. Tepper, at 

 Flatbush, L. L, during the season of 1876. 



C. polygama, thus far, has proved to be comparatively 

 rare.* Its name is probably misapplied in many collections. 

 The reference of pretiosa as a variety of that species may be 

 presumed to arise from erroneous identification of one or both 

 species. 



* Both C. vretiosa and C. polygama were collected, at sugar, at Center, in quite a num 

 ber of examples, during July and August of 1877. The former species was not at all rare 

 throughout the month of July. C. pulyyaina, was less common, but of longer continuance, 

 extending into August. 



