40 THE ENTOMOLOGIST. 



gray, light pea-green, faint purplish and peachy grounds, 

 and dirty dim colours of various shades, &c. Not "pink, 

 or flesh-tint." 



5th. On the central segments there is a well-defined 

 spade-shaped mark, &c. Not a " Y-shaped mark." 



6lh. I fail to find that each dorsal segment has four 

 yellowish tubercles. 



7th. Spiracular line wavy, spiracles dark, with a distinct 

 light ring round each. Not " yellowish." 



8th. Head very small, horn-like J corslet small, striate, &c. 



9th. Under side light, inclined to ashy green. Not 

 " pinkish white." 



10th. It feeds exclusively on Knautia arvensis. Not on 

 *' ling." 



Does Mr. Crewe like the reasons, now some of them are 

 put before him ? But, as I said before, I am not a speculative 

 naturalist, and have no particular process of reasoning : I am 

 guided by facts alone ; hence I am so little understood by 

 people who sit at home and speculate, whilst I am burning 

 oil on the moss, the moor, or upon the mountain ; or they at 

 best go out for a few hours in the sunshine, twiddling into an 

 umbrella, or sit twaddling about the dreadful havoc ichneu- 

 mons make with their larvae ; whereas, I take it, the death-rate 

 amongst the few larvae they can hope to beat off in the day- 

 time is mostly caused by the injury they receive as they fall, 

 or they are the sickly larvae which could not hide away until 

 feeding time. 



The tone of the second note (Entom. vii. 291) is such as to 

 preclude a lengthened reply from me. I will, however, show 

 how utterly its logic fails when applied to both notes. In 

 one case Mr. Crewe makes a Knautia-feeding species a heath- 

 eater, though its food belongs to the natural order Dipsaceae, 

 — three or four natural orders removed from the natural 

 order " Ericaceae," on which his heath-feeder lives, — yet he 

 doubts the possibility of the other species eating the very 

 next plant in the same genus to the one he, and I, have 

 been told it feeds upon on the Continent. I recently saw a 

 cabinet, twenty miles from here, which requires more drawers 

 to contain the pugs therein than would accommodate all 

 Mr. Crewe's British Geometrinae, pugs included; and yet, 

 forsooth, we, who breed pugs by the hundred, — shall I, for 



