APPENDIX C. 



"It is remarkable that the larva of the Bee and of the 

 parasitic Hymenoptera have no anal outlet; no faeces are 

 passed until the larva has acquired full growth, and has 

 ceased to feed, preparatory to the pupa-state : thus the 

 fluids of insects infested by the parasitic larvae are not 

 contaminated by the excrements of their parasites ; and 

 the Bee -cells are kept sweet and clean during the active 

 life of the larva." "Lectures on the Comparative Anatomy 

 and Physiology of Invertebrate Animals." By RICHARD 

 OWEN, F.R.S. (Second Edition.) 



