41 



spot ; SLib-reniform entirely obsolete ; basal dash continued by a 

 distinct dark shade to near apex. Sprinkling of pale brown and 

 bluish-gray scales more conspicuous than in preceding. 



Variation Dccorata. — Color as in preceding ; reniform like ob- 

 soleta, but less distinct ; sub-reniform large, pale and wide open, 

 or rarely closed ; powdering of bluish-gray and pale brown scales 

 in interspaces conspicuous; dark shade behind reniform heavy. 



Variation Unibrosa. — Primaries uniform brownish-gray with 

 hardly traces of other colors. Markings all present but more or 

 less indistinct. 



Variation Confusa. — Paler brownish-gray ; reniform with pale 

 brown centre in a darker brown ring out'ined with bluish-white; 

 sub-reniform, pale and connected merely with top line. All mark- 

 ings in brown, t. p. line being darker than the rest, the bluish-gray 

 scales sparsely distributed over whole wing. Secondaries orange- 

 red. 



In a large number of examples of this very variable species 

 I have found none that cannot be placed under one of the forms 

 described, nor do the gradations between them seem finer than 

 between innubens and scintillans. 



No better illustration of the uncertainty of the position of 

 the sub-reniform as a specific character can be found than in this 

 species, where in one form a portion of the examples have this 

 wide open, another portion closed, but connected with t. p. line, 

 and still others with the spot entirely detached. In the species, 

 as a whole, all gradations can be found, from no sub-reniform at 

 all, to individuals with it large, pale and wide open. 



The forms now described, by placing obsoleta at the head, and 

 following with the others in the order named, form a very pretty 

 series, and if obsoleta, decor ata, umbrosa and conftisa be selected, 

 they would readily pass as distinct species ; great variation is ob- 

 servable throughout in the indentation of the t. p. line, but not 

 sufficiently to admit of further division, no ground for such 

 division, either as a matter of convenience or otherwise being ap- 

 parent, unless the position of the sub-reniform in decorata should 

 justify dividing this one form into three. All of these variations 

 appear to be strictly morphic, the species being single brooded, 

 and there being no apparent limit of variations to localities. 



ANAL APPENDAGES OF LEUCARCTIA ACRyEA. 



By R. H. Stretch. 



Not having, in my reading, seen any notice of 

 certain very peculiar appendages to the abdomen of 

 this common insect, it may be interesting to put on 

 record some observations made a few evenings since. 

 It may be that they are well known, but if not I will 

 suggest that examination be made to see if the 



