224 THE entomologist's record. 



remains pale the longest of all. These last two areas are often 

 suffused {inde fig. 5a), but yet distinctly paler than the first two. Even 

 in positively black specimens these areas can be traced. 



The abdomina vary much. Of the males, four dark and three paler 

 ones show the normal red and black rings. Two pale and three dark 

 males show a whitish abdomen with blackish abdominal tufts. What 

 should be the red rings in the other specimens, are suffused with dark, 

 the normal dark rings being still darker. Two or three of the blackest 

 show scarcely any trace of rings {inde figs. 5a and 6). 



In the females, the same range may be traced but the red is much 

 stronger and more persistent. In some of the palest specimens the red 

 is quite brilliant. There is also a tendency in one or two specimens 

 for the red to take a yellow or orange tint. 



I might mention that the last of the specimens, a black one, came 

 out on August 2nd, showing that the period during which they emerge 

 extends over about six weeks. 



In the Plate, figs, i and la are the parent moths (<? =fig. i, ? = 

 fig. la). Figs. 2 and 2a represent the palest male and female of the 

 brood ; figs. 3 and 3a show the banded form ; figs. 4 and 4a, a banded 

 form with the outer m.argin suffused ; figs. 5 and 5a have the basal and 

 subterminal areas also suffused, whilst fig. 6 iy^) is entirely black, 6a 

 ( ? ) also black with the exception of the two basal marks shown paler 

 in the figure. — J. A. Clark. September \%th, 1892. 



Varieties of Vanessa atalanta and Colias edusa. — I bred a 

 splendid variety of Vanessa ata/anta last week, of which the bands on 

 the upper wings are a very pale yellow, and the margin of the hind 

 wings are of the same colour. I also caught on August 14th, a variety 

 of Colias edusa {helice), the first I have seen or heard of in this district 

 for fifteen years. The type is very numerous here this season. — H. T. 

 Exeter, Dartford. August i^t/i, 1S92. 



fgCIENTIFIC NOTES. 



CoREMiA FERRUGATA AND UNiDENTARiA. — The figures of the genital 

 organs of these insects, given by Mr. Pierce in the August number of 

 this magazine (p. 177) are very distinct, and caused me some surprise, 

 as I have seen specimens of the one form said to have been produced 

 from ova laid by the other. I accordingly examined these organs in 

 some males of both forms, with the result that I found all to resemble 

 the figure attributed to C. ferrugata ; the serrations of the hook, and 

 the angular projection preceding it, were equally developed in both 

 forms, and I did not in fact perceive any difference between them. 



I suppose it is open to anyone to maintain that my supposed 

 unidentaria are only varieties q{ ferrugata, and that there is a true 

 jifiidentaria which I do not possess ; my specimens are. however, certainly 

 such as commonly pass for unidmtaria, and until I see examples of 

 anything different, I shall continue to regard the two forms as mere 

 colour varieties of the same species. 



Perhaps I may be permitted to add that, whilst the form of genital 

 organs is doubtless usually constant in normal individuals of the same 

 species, yet abnormalities are liable to occur in these as in every other 



I 



