PLATE XLIV. 



SiPHOCORYNE XYLOSTET. (Page 25.) 



Fig. 1. — Apterous viviparous female. 



Fig. 2. — Pupa, 



Fig. 3, — Winged viviparous female, a, Head and 

 antenna, b, Wing cases of the pupa with, y^, the 

 rudimentary unexpanded wings. From these it will 

 be seen that the development is by a direct growth 

 and not from an unfolding of the membrane, c, Pos- 

 terior abdominal rings containing unborn embryos 

 arranged with their tails towards the vulva, t' t\ 

 Cornicles within which are seen the ducts which are 

 continued into the cavity of the abdomen. The oily 

 globules do not seem to pass through these ducts. 



