72 DASYCAMPA RUBIGINEA. 



its being found in ants' nests, those of Formica 

 fuliginosa ; but its voluntary presence in such a situa- 

 tion is more than I can comprehend. 



When about to change it spins a thin cocoon on 

 the surface of the ground, working in moss or leaves 

 above, and bits of earth, etc., below, but still keeping 

 it of a tolerably oval form. The pupa is about three- 

 quarters of an inch long, moderately stout, cylindrical, 

 but a little depressed at the junction of the back of the 

 thorax with the abdomen ; from this point the abdomen 

 rather swells out in size for about two-thirds of its 

 length, and then tapers to a somewhat obtuse point, 

 which is armed with a single tiny spike, and attached 

 by two or three threads to the lining of the cocoon ; 

 the surface is shining; the colour dark purplish- brown. 

 (J. H., November 26th, 1868, B.M.M., V, 206, 

 January, 1869.) 



XANTH1A CITKAGO. 



Plate LXXXIV, fig. 4. 



On the 9th of May, 1871, I received from Mr. John 

 Firth, of Cleckheaton, a larva of this species ; and on 

 the 13th of May of the present year, half a dozen 

 from Mr. John Harrison, of Barnsley. At this date 

 they are about three-quarters of an inch in length, and 

 have still to go through the last moult ; for this 

 purpose they enclose themselves in loose cocoons, 

 forming by drawing together together two leaves with 

 silken threads. At the end of May they are full-grown, 

 and may be described as follows : — 



Length about an inch, and tolerably plump in pro- 

 portion. The head is very slightly narrower than the 

 second segment, and still narrower than the third seg- 

 ment ; it has the lobes globular, but the first rather 

 flattened. Body cylindrical, tapering a very little 

 towards the head ; segmental divisions tolerably dis- 

 tinct, but not deeply cut ; skin soft and smooth. 



