The Glow- Worm and Other Beetles 



rather smaller than the rest, a peculiarity 

 which we have already noted in the larva 

 which precedes the pseudochrysalis. 



On comparing the pseudochrysalids of 

 the Oil-beetles and Sitares, we observe a 

 most striking similarity between the two. 

 The same structure occurs in both, down to 

 the smallest details. We find on either side 

 the same cephalic masks, the same tubercles 

 occupying the place of the legs, the same dis- 

 tribution and the same number of stigmata 

 and, lastly, the same colour, the same rigidity 

 of the integuments. The only points of dif- 

 ference are in the general appearance, which 

 is not the same in the two pseudochrysalids, 

 and in the covering formed by the cast skin 

 of the late larva. In the Sitares, in fact, 

 this cast skin constitutes a closed bag, a pouch 

 completely enveloping the pseudochrysalis; 

 in the Oil-beetles, on the contrary, it is split 

 down the back and pushed to the rear and, 

 consequently, only half-covers the pseudo- 

 chrysalis. 



The post-mortem examination of the only 

 pseudochrysalis in my possession showed me 

 that, similarly to that which happens in the 

 Sitares, no change occurred in the organi- 

 zation of the viscera, notwithstanding the 

 profound transformations which take place 

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