254 



MR. E. B. POULTON ON THE PROTECTIVE [Mar. 1, 



Table V. 



Species and Class or 

 Order. 



Crustacea. 



Armadillo vulgaris 



Arachnid A. 

 Spiders of different species. 



Protective resemblance, or habits of concealment, evasion, &e. 



4. Imagines of other Insects and a few 

 (The arrangement of Claus's ' Text- 

 Dark colour and habits of concealment are strongly protective. 



Ej>eira diadcma and Tegenaria domestica were chiefly employed in some of 

 the experiments (E. B. P.), but any common Spiders which could be found 

 were offered to the Lizards and Frogs. In appearance, and especially in 

 their rapid retreat into concealment, the Spiders are difficult to capture, 

 especially when it has been shown that the enemies do not like the web in 

 their mouths. 



Myeiapoda. 

 lulus terrestris 



The dark colour and habits of concealment are strongly protective, but it also 

 possesses a very unpleasant odour. 



Lithohius forficatus 



The brownish orange colour, and especially habits of concealment, are strongly 

 protective : inodorous. 



Orthoptbra. 

 Forficula auricularia 



Probably this common species of Earwig was always employed. The colour 

 and habits of concealment are strongly protective. The pincers may perhaps, 

 in some cases, act as " terrifying" structures. The insect has a very disagree- 

 able smell. 



Periplaneta orientalis 



The colour, rapid movements, and habits of concealment are strongly protec- 

 tive, but the insects also emit a very unpleasant odour. 



Decticus venudvorus. 



A large green grasshopper, with brown spots on the fore wings. Thus well 

 concealed, and evidently a very powerful hopper. 



NEUROrTEEA. 



Chrysopa perla 



Probably this common species was employed. Its green colour protects the 

 insect among the leaves in which it lives, but it can also emit a peculiarly 

 unpleasant odour. 



