40 



When an Aurelian possesses a brood of this moth, he readily learns, on the ar- 

 rival of the month of February, which of his pupa will become winged that year ; 

 this always happens to be for the greater number, and its approach is denoted by the 

 swelling of the large belts of the pupa. Those which are intended to rest until ano- 

 ther season do not swell until that season approaches. The cause of this swelling is 

 difficult to explain, and cannot be owing to heat, because all the pupa— those which 

 do not, as well as those which do swell — are kept in equal temperature, and experi- 

 ence the very same treatment. (Lepid. Britan. p. 125.) 





PORTHESIA CHRYSORRH.EA. THE YELLOW TAIL MOTH. 



Plate XXV. fig. p— s. 



Synonyms. Phalsena (Bomb.) Chrysorrhsea. Linn. Syst. Nat. ii. 822. Donovan Brit. Ins. vol. i. pi. 10. 

 Albin's Ins. pi. 87. fig. e—i. Wilkes' Eng. Moths, pi. 59. 

 Porthesia Chrysorrhsea, Stephens. 

 Arctia Chrysorrhsea, Leach, Curtis. 

 Bombyx Aurifluus, Haworth, $ . 



Upper Side. The antennse are pectinated. The thorax is covered with hair, which stands 

 erect. The whole moth is white as snow, except the tuft at the anus, which is yellow ; and the 

 eyes, which are black. 



The caterpillars feed on oak and black-thorn : remaining during the winter spun up in small 

 cases ; in spring they come forth, and feed again, till the beginning of June ; when they are full 

 fed, as at (p), and change into chrysalis, within a spinning ; the chrysalis shewn at (p). The 

 moths appear the end of June. I have described the female at (r), and the male at (s). They 

 are very common, and easily taken. This moth has no tongue. 



Expansion of the wings 1| — 1| inches. 



THECLA RUBI. THE GREEN HAIR STREAK BUTTERFLY. 



Plate XXVI. fig. a, b. d. q. 



Synonyms. Papilio (Pleb.Rur.) Rubi, Linn. Syst. Nat. ii. 791. Lewins Papil. pi. 44. Donov. 



Brit. Ins. vol. 13. pi. 443. Wilkes 1 Eng. Moths $■ Butt, pi. 118. Albin's Ins. 



pi. 5. fig. 8. 

 Thecla Rubi. Leach, Stephens, Curtis. Duncan Brit. Butt. pi. 28. fig. 3. 

 Papilio Tespis. Harris, 1st edit, (nee Linn.) 



Upper Side. The head, thorax, and abdomen are small and brown : the wings are also 

 brown. 



The under side is green ; the inferior wings having three white streaks or spots. 



The caterpillar is green, formed like a wood louse or oniscus, as may be seen at (a). It 

 feeds on the buds of the bramble : becomes full fed about the end of July, when it ties itself 

 up in the same manner as the Purple Hair Streak; and changes into a chrysalis like that 

 at (5). The fly appears the middle of April. The upper side is shewn at (d), and the under 

 side at (q). 



Expansion of the wings 1 — lj inches. 



I have always found this to be the commonest species of the genus to which it 



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