362 PTER0PH0RUS PLAGI0DACTYLUS. 



by the tail ; the wing-cases were long, the tips well 

 produced and projecting a little, though lying close 

 along the abdomen ; the head and thorax rise a little 

 at the top to a ridge ; the tail is pointed. In colour 

 the pupa is green, slightly inclining to olive, the 

 wing-covers darker green ; there are a purplish-brown 

 dorsal stripe and two parallel lines of the same colour 

 along the subdorsal region. 



The moth — a genuine Pterophorus plagiodactylus — 

 appeared on the 9th of June. (William Buckler, 9th 

 June, 1872; Note Book I, 170.) 



Pterophoeus ruse us. 



On the 13th of June last, 1881, Mr. W. H. B. 

 Fletcher found, feeding on speedwell growing on a 

 bank at Worthing, a good supply of larvae of Ptero- 

 phorus pterodactylus L. = fuscodactylus Haw., which 

 he at once kindly forwarded to me. It was, however, 

 a late batch, for at the time Mr. Fletcher was breeding 

 the moth freely from larvse he had collected some 

 weeks previously. 



The larva is in length about five-eighths of an inch, 

 and scarcely so stout as seems usual in the genus. 

 The head is small, and narrower than the second 

 segment; it is polished, rather flat in front, but 

 rounded at the sides. The body is cylindrical, of 

 fairly uniform width, but tapering a little at the 

 extremities ; the segmental divisions are well defined ; 

 the skin, with a soft and half -transparent appearance, 

 is sparingly clothed with short hairs. 



In colour there are two varieties, which are perhaps 

 about equally numerous. In one of them the ground 

 colour is a bright grass-green ; in the other it is 

 equally bright yellow-green ; in both forms the head 

 is pale yellowish-brown, very prettily reticulated with 

 intense black. The dark green, or in some of the 

 yellow specimens dark brown, alimentary canal forms 



