VAHE MECVm. 6;} 



Obsi'fmitioH. This is tlio largest and one of the luoxt 

 beautifijl Hutterflcs wliicli Britain produces, and may be 

 considered astlie only JJritish species excepting the P. I'oita- 

 liriiis, (whicli in England is extremely rare), belonging to 

 Linne's tribe of /?y/«<ra. When first discovered it was sup- 

 posed to be a foreign insect. By some Englisli Aurelians it 

 has been denominated tlie Iloyal William, proliably in com- 

 pliment to his Royal Highness William Duke of Cnmberland, 

 who in 1745, (which was about the tune that this Butterfly 

 was first noticed,) was very popular for his defeat of the 

 rebels. In some districts in Friince it is known by the name 

 Grand Carottier, from the injm-y it occa.sions to the carrot in 

 the cultivated as well as the wild state. This splendid insect 

 though called the Common Swallow-tail Butterfly, is only to 

 be met >vith in particular places, and is by no means abund- 

 ant in any part of England. It sometimes happens that two 

 broods of this Butterfly are produced in the same summer, 

 one in May, having ))eeu in the pupa state all the winter, 

 the other iu August, from the Clirysaliilcs of July. If the 

 Caterpillar of P. Machmn becomes a pupa in July, the 

 Butti-rfly will appear in thirteen days ; if in September, not 

 till June following. 



I'APILIO I'ODALIRIUS, SCARCE SWALLOW-TAIL. 



LcuHiu pi. 35. Donoi'un, o. 4, p. 109. Duncan, pi. 4, Jig. 2. 



Uiitttrjiy. AVings yellowish. Primary with tiie co.'ital 

 uervm'e, six bands (the two first extending into the secondary 

 wing, and the third and fiaii much abbreviated,) and the 

 posterior margin black. Secondary tailed, indented, with 

 posterior margin black witli four purplish crescents, aspurious 

 eyelet at the anal angle, black with a purpUsh crescent, and 



