)60 THE CANADIAN ENTOMOLOGIST. 



series he has been able to match all of Prof. Riley's figures of cunea, 

 overlooking the fact that the dot at the fork 'is not a constant feature of 

 Prof. Riley's series, if, indeed, it occurs at all exactly as it does in congn/a. 

 Examining my own six specimens of co?igrua, which vary considerably 

 otherwise, the dot at the fork is present in all. My New Windsor 

 specimen is immaculate except for the dot. The three from Tennessee 

 all have the dot, but also a faint row of spots near the outer margin. My 

 Summerville specimens are worthy of special mention. I was inclined to 

 think they might represent a new species, until Dr. Dyar expressed a con- 

 trary view. It is still possible that they are distinct ; I have not yet had 

 time to give full study to the subject. On Dr. Dyar's opinion, however, 

 they may rest for the present as congrua. They have the spot at the fork 

 and a row of spots near the border, in this respect matching the Tennessee 

 specimens very well. But the outer half of the costa is black, the tips are 

 . blackish, and the upper half of the fringes are also blackish. At a casual 

 glance one would say they had been soiled in an electric-light globe, but 

 there being two specimens similarly marked and having been taken where 

 the only electric lights were enclosed in incandescent globes, the dark 

 parts must be considered as normal. Moreover, Dr. Dyar tells me he has 

 seen one specimen in which all of the primary was smoky. 



In regard to cunea there is certainly a purely immaculate form, nine 

 such specimens being before me. Dealing with the spotted forms, can we 

 find the typal pattern which is constant ? I think so ; and it is not a spot 

 at the fork ; it is, I think, a spot on the costa, near the base. I have a 

 specimen showing this spot, which is otherwise immaculate, and my series 

 includes seventeen specimens, in every one of which this spot on the costa 

 occurs, in the more maculated forms being the top of a veritable 

 band. The extreme of ray series is so suffused that the bands nearly 

 coalesce, giving the primaries an almost uniform colour. Curiously enough, 

 this is one of ray Summerville specimens, and is as small as any that I 

 have. 



In regard to size, it seems very certain that congrua is a much larger 

 species, even though the smallest congrua may match the largest cunea. 



My cunea range from 30 ram. ( (-( ) to 35 mm. ( $ ), while my congrua range 

 from 35 mm. ( ^ ) to 45 mm. ( 5 ). 



There is no doubt in my mind that congrua is distinct from the cunea 

 forms, but is it possible that the immaculate and the spotted forms of 

 cunta may be distinct ? 



