C|t dferafoian d^wuhpi 



VOL. VIII. LONDON, ONT., JULY, 1876. No. 7 



ON CATOCALA PRETIOSA, N. S. 



BY J. A. LINTNER, 



New York State Museum of Natural History, Albany, N. Y. 



The species is closely allied to C. polygama Guen. Its distinctive 

 features may be more clearly appreciated by a differential comparison 

 with that species. The basal region is conspicuously and broadly shaded 

 with black, deepening toward the anterior transverse line ; in polygama, 

 shaded with ferruginous. The anterior transverse line is moderately 

 oblique in its general direction, tending to the posterior third of the 

 internal margin, geminate, distinctly separated by white below and slightly 

 above the submedian : in polygama the line is quite oblique, tending to, 

 or very near to, the internal angle ; preceded below the submedian by 

 gray and ferruginous scales. 



The posterior transverse line has the extra-cellular teeth moderate, 

 unequal, the lower one in cell 4 being improminent ; moderately out- 

 wardly angulated (not toothed) on the median fold before the sinus ; the 

 sinus short, not extending to the middle of the wing, the line narrow 

 with ferruginous and white below it ; from the sinus running direct and 

 slightly outwardly oblique to the internal margin, followed by a white 

 line : in polygama the two teeth are conspicuous and nearly equal ; 

 sharply toothed outwardly on the median fold, as in cratcegi ; sinus long, 

 reaching the middle of the wing, the line broad, with ferruginous on each 

 side and without white below ; below the sinus, a long and sharp tooth 

 bordering the internal margin. 



The two transverse lines are separated on the submedian nervure by a 

 space equal to the width of cell 2 on the terminal margin, whence they 



