the Life History of Agriades thersites. 299 



and that in thersites the bases of the smaller hairs are 

 much more stellate in this region, differences that other 

 specimens support. 



The other photographs probably explain themselves as 

 well without as with a description. 



PI. XLV is perhaps interesting as showing how much 

 clearer a cast skin (when it can be unravelled) may be 

 than a prepared one. 



Perhaps the very good presentment of the special 

 angular hairs of the prothorax on PI. XLII and XLIII are 

 worth noting. 



Jan. 31, 1914. Newly moulted pupa. 



Length 10"5 mm., a slight waist at 1st abl. 4'5 mm. from anterior 

 end, height at mesothorax 4-0 mm. and to waist, thence rising to 

 4'5 mm. at 4th abl. Thoracic width 4'0 mm., increasing from waist 

 to 4"3 mm. at mid abdomen (3rd and 4th segments). Colour 

 rather olive green, darker dorsal line, which is really dorsal vessel, 

 and can be seen to pulsate about 27 in a minute, actual darker 

 spots occur half-way between dorsum and spiracles, associated with 

 a slight hollow; one of this series occurs just above wing-base on 

 mesothorax, head, wings and appendages are a paler more pure 

 green, rather transparent, the wings very much so, all the tracheae 

 being very distinct. 



The larval skin adheres to last segment, the pupa is 

 otherwise free and the skin happens to have retained no 

 hold. 



Feb. 3. There are now three pupae and the most of 

 the remaining larvae are quite full fed or fixed up. Saw 

 one specimen completing its moult to pupa. This one and 

 another larva had a " girth " consisting of apparently only 

 one strand of silk; several had some traces of silk on 

 adjacent leaves, as for an abortive cocoon; one or two 

 were placed where no material for a cocoon was available, 

 and one or two appeared to spin no silk at all. Some 

 remain a slightly darker duller green up to pupation, one 

 or two assumed quite a dark tint. 



Feb. 3. Of half a dozen larvae placed on plants in the 

 open, three are found alive, two in 3rd and one in 4th 

 instar. 



Feb. 9. All the indoor larvae have pupated, except 

 one or two that are laid up for pupation. There is, how- 



