312 Dr. T. A. Chapman on Life History of Lyeaena arion. 



the two or three species of Myrmica which we know to 

 welcome it, afEord habitats for its larva in their nests, and 

 what are the species which it is unable to quarter itself 

 upon, and, as a second point, whether the larva passes the 

 winter in close association with the ants, or finds a more or 

 less separate apartment in which to spend the period in 

 which it is more or less dormant and does little or no 

 feeding. 



Explanation of Plates XLVII-XLIX. 



PLATE XLVII. 



Two photographs of portions of faeces of L. avion larva (Slept. 2, 

 1915) X 45. 



PLATE XLVIII. 



Two portions of arion faeces. These were selected as showing 

 tlie largest portions of the skin of the ant larva in one piece ; generally 

 they are in small portions, as in Plate XLIX X 45. 



PLATE XLIX. 



Shows, fig. 1, another portion of arion faeces, the bits of ant 

 larva being small X 45; fig. 2, a cast larva skin of the ant, such as 

 were easily found in the debris of the ant midden X 35. 



