of Rhipiphorus paradoxus. 317 
pose of searching for the egg. I examined these almost 
immediately after they were taken, and ascertained a point in 
the history of Rhipiphorus that renders it parallel with those 
of Melo? and Stylops; and though my first observations had 
cleared up most of the disputed points in its history, these 
opened up a fresh field for investigation. My observations 
will perhaps be more intelligible if I throw them into the form 
of a life-history of the beetle; and this arrangement will show 
more clearly what points require further elucidation. 
hipiphorus, then, doubtless lays her eggs somewhere ; but 
where, I am unable to tell. I first take up the history with 
the young larval Rhipiphorus at large in the wasps’ nest, in 
à form not unlike that of the young larva of Meloz. It was in 
examining the first nest, that I met with a solitary specimen 
of the larva in this stage. I examined it under the micro- 
Once or twice finding a trace of a mark there, that it enters 
about the back of the second or third segment. But I do 
not know this, nor at what age of the wasp-larva it does 80. 
I have, however, succeeded in finding the larva of Rhipiphorus 
Within that of the wasp, before the latter had spun up. As- 
