240 THE ENTOMOLOGIST. 



segment which bears two terminal points each ending in a fine 

 straight hair ; the segments are somewhat indistinctly sub- 

 divided, the first division occupies the anterior half of the 

 segment, on which are placed (on each side) four long curved 

 glassy white hairs with tubular bases ; the first is sub-dorsal, 

 the second super-spiracular, and the third and fourth sub- 

 spiracular on the large lateral lobe ; all curve backwards except 

 the super-spiracular one, which curves forwards ; on the 

 posterior half is a second sub-dorsal hair, acutely elbowed where 

 it is widened out, then running at right angles and sharply 

 pointed ; other hairs exist on the ventral surface and claspers. 

 All the hairs are pure white and glassy. There is a fine medio- 

 dorsal longitudinal line, a finer and less distinct sub-dorsal line, 

 and a rather plainer spiracular line ; between these two lines is 

 a rather broad band; this as well as the lines are dull red-brown; 

 the spiracles are dark brown. The whole surface of the body is 

 granular and of a pale creamy-ochreous colour. 



On May 17th, 1912, we received from Hungary two larvie, 

 one almost fully grown, the other rather smaller ; from their 

 great similarity to the larva of galalhea, we at once felt certain 

 that they were suivarovius, which is now proved to be the 

 case by the emergence of the perfect insect. The larva when 

 fully grown is 1^^ in. long. Excepting its larger size and the 

 formation of the head it is exactly like galathea in form, and in 

 cobur it greatly resembles the green variety of the latter. The 

 chief difference is the head of suivarovius, which is wholly green 

 and unicolorous with the body, and bears two flattened project- 

 ing points with the front edge serrated. The head of galathea is 

 globular, without the points, and always ochreous-yellow both 

 in the green and ochreous forms. Suivarovius has deep orange 

 spiracles which in galathea are black. 



The ground colour of suivarovius is green, with a dark green 

 medio-dorsal longitudinal stripe bordered on either side by a 

 pale yellow-green line ; a greenish white subdorsal stripe 

 bordered below by dull green ; spiracles deep orange ; legs pale 

 buff ; anal points purple at base, fading into rose pink at tips 

 and laterally striped with pearl white. The entire surface, in- 

 cluding the head, is clothed with white sharply-pointed bristles. 



On May 26th the largest larva ceased feeding and roamed 

 about for several hours, and the following day entered the basal 

 grass stems and spun a loose network of silk on the surface of 

 the earth and stems, forming a slight oval-shaped cocoon, in 

 which it remained concealed almost hidden from view for a 

 week, and pupated on June 3rd. The following day it was 

 figured as it was, but in order to show the cocoon more clearly 

 some of the grass {Festuca) was removed from the front ; after 

 figuring it, the top of the cocoon was opened up for examination 

 of the pupa, when it was then of a translucent pale ochreous- 



