182 THE ENTOMOLOGIST. 



grey, but on the flat under-portion bright yellow. The neck, 

 head, and antennae are beautiful rosy red. In the male the 

 bright yellow spots in the border are wanting, and the fore 

 wings are more rounded. Then in the female the tip runs out 

 into a somewhat lengthened projection. 



This insect lives in warm countries, such as the Fatherland. 

 It is not found in Sweden and Denmark, but appears in Africa 

 and America. It is caught towards the end of summer, and 

 often even far into harvest, in our fields and meadows on the late 

 flowers, by which it is nourished, and also in the open and 

 higher situated regions, although it does not reach these so 

 frequently as the following one. 



The history of this butterfly yet requires many additions 

 before its egg, caterpillar, and chrysalis, with all the facts per- 

 taining to them, are fully described. 



The " crown-vetch butterfly," or " sulphur-yellow hay butter- 

 fly," Papilio palceno, L., is likewise a light concolorous Danaid. 

 The systematical mistakes which have hitherto been made 

 regarding this butterfly have already been clearly brought out 

 by Herr Esper. It is called the " crown-vetch butterfly" (kron- 

 wickenfalter), because its caterpillar is fed on the variegated 

 crown- vetch, the Goronilla varia of Linne, as the Viennese 

 entomologists specify. It also seeks its nourishment from the 

 Pteris aquilina, as Linne ascertained ; so the butterfly might 

 still have been named from the eagle-herb (common bracken) 

 without the crown-vetch. It is called " hay butterfly," because 

 it is found in this country in great numbers in June and July. 

 In September it still flies in woods, over heaths, and meadows. 



It may be distinguished from the former butterfly by placing 

 the two in apposition, as the coloration of both is different. Of 

 the caterpillar there is no drawing at present. The leading 

 entomologists reckon it amongst the side-striped larvae. 



In the female the colours are paler, and the male is some- 

 what smaller. It is thus difficult to distinguish them from each 

 other, especially as the ground colour and the bordering of the 

 wings are sometimes lighter or darker without distinction of sex. 



NOMENCLATURE OF LEPIDOPTERA. 



In a bulky volume, entitled ' Proceedings of the Fourth Inter- 

 national Congress of Zoology,' recently published, there are 

 among the papers one or two relating to Entomology, and two 

 appendices. One of these latter deals with the subject of 

 nomenclature of Lepidoptera, and presents the opinions of 

 several eminent lepidopterists upon some very difficult matters 

 chiefly in connection with the law of priority. 



