PTEROPHORUS BRAOHYDACTYLUS. 373 



PTEROPHORUS BRAOHYDACTYLUS. 



In June, 1856, I received, through the kindness of 

 Mr. Stainton, who had them from Professor Zeller, of 

 Zurich, two larvae of Pterophorus brachydactylus ; they 

 were found on Prenanthes purpurea, but whilst in my 

 possession they ate Lactuca muralis freely, feeding on 

 the upper surface of the leaf, and living on it without 

 any attempt at concealment. 



The larvae were narrowly fusiform in shape, not 

 flattened from above downwards, and with sixteen 

 feet, the two segments which followed the three pairs 

 of true legs having, however, prominences beneath. 



The head was yellowish-brown ; the body was 

 green, with the dorsal line of a darker green colour ; 

 the subdorsal line was also dark green, but so wavy, 

 as almost to present the appearance of separate spots 

 upon each segment ; the spiracles were black. There 

 were two rows of lateral tubercles, each of which had 

 a few dusky grey hairs springing from it. 



Neither of these larvae was reared ; when apparently 

 full-fed they became stationary, without forming any 

 silken fastening, and in a few days a cocoon of one of 

 the Muscidae emerged from each larva. The small 

 flies reared from these apparently belonged to the 

 genus Musca, or Anthomyia (Tachina ? Eds., E.M.M.). 

 (R. 0. R. Jordan, 18th November, 1864; E.M.M., 

 February, 1865, I, 215.) 



PTEROPHORUS galactodactylus. 

 Plate CLXIV, Qg. 6. 



During June last, 1880, I bred a nice series of this 

 very pretty ' plume,' from liberal supplies of larvge 

 sent me by Messrs. W. H. Grigg, of Bristol, and F. 

 D. Wheeler, of Norwich. 



From the two lots of larvse it would appear that 



