190 Queries and Answers. 



description. Sepp, in his exquisite work on Dutch Lepi- 

 doptera (vol. iii. part iii. tab. xlv.), has figured and described 

 our species, and says, his caterpillars spun up between two 

 leaves, when the imago appeared on the 5th of July, corre- 

 sponding exactly to the time when my friend's specimens were 

 developed. Albin (pi. 52.), although he figures the purple 

 hairstreak, says nothing to the purpose on its final transform- 

 ation, nor does any thing occur on the subject in the European 

 work of Madame Merian. Sepp (vol. ii. pi. xv.) has described 

 and depicted an onisciform larva, strikingly like that of our 

 Thecltf, which he calls Limacodes, feeding on the oak, and 

 which is remarkable for having only the three anterior pair of 

 feet ; the want of the usual complement being supplied by a 

 slimy matter, and the contractile segments of the abdomen, 

 to aid locomotion. On first hearing of the larva having 

 retired under ground to change, I imagined they were the 

 same as those figured by Sepp ; but the subsequent appear- 

 ance of the imago soon undeceived me. Besides, the vast 

 difference in structure between the larva of Limacodes, which 

 is a nocturnal species or moth, and those of Thecltf, the former 

 are developed much later, and the pupa is folliculated, and 

 does not change beneath the ground. — William Arnold 

 Broinfield. Plymouth, July 15. 18 32. 



The Mazarine Blue Butterfly, (p. 96.) — From X.'s de- 

 scription (p. 96.), I have no doubt that the butterfly which he 

 took, and supposes to be the mazarine blue, is Papilio Cymorc 

 of Haworth, Lewin, and Miss Jermyn, and Polyommatus 

 A s cis of Stephens. The English names of insects, it should 

 be remembered, are unfortunately but vague and uncertain ; 

 at least, they are oftentimes vaguely applied. The insect in 

 question has been called the dark blue by Lewin, and more 

 generally by others the mazarine blue ; and as P. Qymon of 

 Haworth (or Cimon of Lewin) is one and the same thing with 

 P. A N cis of Stephens, the English name " mazarine blue" 

 belongs, of course, to both. As to the treatise referred to by 

 X. (Constable's Miscellany, lxxv.), in which P. Avion is given 

 for the mazarine blue, it is probably a work of no great 

 authority : the plates, I can confidently say, are worse than 

 bad, insomuch that a very transient glimpse at them prevented 

 my looking further into the accompanying letterpress. P. 

 Ariow, from its size, ought to be distinguished, as it usually 

 is, by the English appellation " large blue." P. Cymon, or 

 A v cis (whichever of the two may be the more correct name), 

 was at one time considered an insect of very great rarity. In 

 1803, when the first part of Hawdrth's Lepidoptera Bri- 

 tannica was published, that able entomologist, than whom no 



