A NEW MOTH. 119 



" Although very variable, this species appears to be specifically 

 distinguished from variella by the anal tuft of the male, which is 

 stouter, and has the appearance of being cut off straight behind 

 ( { den starkern, hinten grade abgeschnittenen Afterbusch'). The 

 more obtuse form of the fore-wings, and the blackish upper surface 

 of the abdomen, must also be considered as affording additional 

 points of distinction. 



"Siccella is, as a rule, smaller than variella, yet, especially in 

 the female sex, it does attain to the size of the smallest specimens 

 of the latter 



" Fore- wings shorter than in variella, and, owing to the greater 

 density of the fringes, appearing less sharply pointed ; the ground- 

 colour darker, yellowish-brown, the white scales being sparingly 

 scattered over the surface : the quantity of these scales varies 

 greatly, but does not cause the ground-colour to appear paler : these 

 scales accumulate at the apex, and here generally form a whitish 

 spot sometimes, however, they are entirely absent. 



" The fold is black ; beyond the middle lies a white dot com- 

 posed of a few scales ; between this and the base there is generally 

 another dot, variable in size, and sometimes larger than the former, 

 At the extremity of the fold there are only scattered white scales, 

 which do not form a spot. 



" At Glogau siccella is not rare in sandy Scotch-fir woods in June. 

 It flies in the sunshine, frequenting flowers, and, in company with 

 cicadella, visits those of Jasione montana. I have also taken it on 

 the flowers of Potentilla argentea " 



Von Heinemann, in his well known work, incorrectly considers 

 B. siccella as only a variety of B. variella ; but Snellen, writing at 

 a later date, keeps them separate, and the differences, which 

 become apparent from a comparison of the larvae, prove beyond all 

 doubt that they are totally distinct species a fact previously 

 rendered more than probable by the differences between the perfect 

 insects themselves. B. siccella (alar, exp., 3J'" 4J"') may be 

 distinguished from B. variella (alar, exp., 4J"' 5'") by its smaller 

 size, shorther and blunter wings, stouter and darker abdomen, and 



