upon lepidopterous larvae, 6bc. 303 



fig. 12 x 10, a transverse section of the mesothonix of 

 G. libatrix is represented, showing the superficial larval 

 cuticle with the black pigment present in its outer layer 

 over an area corresponding to the swelling, which is 

 seen to correspond with the pupal fore wing, shown in 

 section beneath and formed as a diverticulum from the 

 body-cavity. The pupal body and wing is covered by 

 its own partially formed cuticle, of which the rough 

 superficial layer is complete while the lower lamellated 

 layer is in process of development. The details of the 

 larval and pupal cuticle and the hypodermis cells of this 

 region are shown in Plate X., fig. 13 x 188. The 

 cells are seen to be remarkably long, and their deep 

 ends are prolonged into fibre-like processes, while their 

 superficial extremities are continuous with a layer 

 (coloured red in fig. 13) which represents the partially 

 developed lamellated layer of the pupal cuticle. 



7. Further notes upon the larva of Paniscus 

 cephalotes. — (1). On August 1st I found an adult larva 

 of D. vinula near Oxford, and eight eggs of P. cephalotes 

 were attached to it in the following positions : one egg 

 between the 3rd thoracic and 1st abdominal segment, 

 six between the 1st and 2nd abdominal segments, and 

 one between the 2nd and 3rd abdominal segments. 

 The eggs were not crowded, but nearly all were attached 

 to the left side of the larva. Three of the eggs (out of 

 the six described above) were near the median dorsal 

 line, on the purple band or its white border, one of these 

 being attached on the right side of the middle line. I 

 was very interested to find that the larva could evert its 

 caudal tentacles, although they were comparatively 

 small and unimportant as a means of defence, this being 

 always the case after the first part of the last stage. 

 On August 11th the eggs had all developed a few days, 

 and the development began just as the larva ceased 

 feeding and darkened. On August 9th I removed seven 

 out of the eight parasitic larva3 while they were quite 

 small, two being in the first stage and six just beginning 

 the second. The larva which was left was unhealthy and 

 soon died. 



(2). On August 24th an adult larva of D. vinula was 

 sent to me by Mr. W. H. Harwood : by the next day it 

 had become brown, and had begun its cocoon. It had 



