DESCRIPTION OF PLATE, 30. 673 



Fig. 6, Abdomen with two caudal appendages : 1 , first abdominal seg- 

 ment, attached to the posterior thoracic segment ; 2 , second 

 abdominal segment ; 3 , third or last abdominal segment ; h, 

 lower segment ; «, upper segment of caudal appendage. 



7, Transverse section of the pupa, close to the eye-apodemes ; 



these being made to stand more upright than in fig. 2. 



The internal organs of the animal have all been removed. 

 a a a', section of carapace ; from a to a', on the lower side, 



forms the ventral surface, with three longitudinal furrows, 



here in some degree opened out. 

 c, crest of thick membrane on each side, forming the sides of 



the lateral furrows. 

 N, the posterior margin of the eye-bearing segment (see fig. 4) 



of the antennae ; the edges of which are hardened and 



thickened, and are produced inwards, forming 

 ?i, the apodemes, to which are attached the (»') great compound 



eyes. 



8, Terminal portion of an antenna, greatly magnified, seen from 



above. 

 o, part of the second or main segment ; an oblique line shows 



a line of separation of the upper thinner and lower thicker 



membrane : o' t single spine borne at this segment. 

 p, disc-segment, bearing seven spines ; p', an irregular border 



of the cement-tissue, believed to have debouched through 



the spoke-like minute tubes seen on the disc. 

 v, terminal segment, projecting almost rectangularly outwards ; 



v', most delicate tube or ribbon, believed to consist of 



cement-tissue. 



43 



