( H ) 



spider, which with its thin filin presented a complete resem- 

 blance to a fresh bird-dropping, even to the liquid matter 

 running to the apex of the leaf and congealing. 



Several of the small rugose Homoptera belonging to the 

 genus Bolbonota, many of which closely resemble species of 

 Chlamys in facies, also resemble the droppings of caterpillars. 



9. A great many Coleoptera are protected by their resem- 

 blance to well-protected insects such as ants, bees and wasps : 

 and in such cases they often resemble the species they copy, 

 not only in colour but also in habit ; thus our wasp-like 

 Clytus arietis is very different from the usually sluggish 

 Longicorns, and runs swiftly up and down the leaves on 

 which it settles just like a wasp : P achy to, cerambyciformis 

 again may be seen hovering up and down over shrubs just 

 like Hymenopterous insects : a strong resemblance to wasps 

 and bees is found in members of the Longicom genera Esthesis 

 (Australia), Acyphoderes (Brazil and Mexico), Sphecomorpha 

 (Brazil), Isthmiade (Brazil), Heplaxstion (Chili), Bromiades 

 (Cuba), and many others : two of the most striking examples 

 are perhaps Ccdlisphyris macropus from Chili and Peru, and 

 Ulochsetes leoninus from British Columbia : the latter is 

 exactly like a species of humble-bee ; a close resemblance to 

 the humble-bee is also found in the Staphylinid Emus hirtus, 

 one of our rarest British insects, and in the Cetoniid genus 

 Trichius : the Longicorn genus Macrones (Australia) resembles 

 large Braconidse ; several other excellent instances of this kind 

 of resemblance are given by Dr. Alfred Bnssel Wallace in his 

 work on "Darwinism," p. 258, which we need not here recapitu- 

 late. Ants are largely mimicked by the Heteromerous family 

 Anthicida?, especially by the large genera Anthicus and Formic- 

 omuSf and also by Clerida? and Longicornia as in the case of 

 Bseudocephalus formicides and 1\ intra from Australia. We 

 might naturally expect the iuquiline beetles of the ants' 

 nests to resemble their hosts, and we find that in many 

 instances this is the case, when they are viewed in their 

 natural position in the nest : when they are taken out of 

 their environment the surroundings are by no means so 

 obvious : Wasmann is of opinion that the inquilines are 

 aggressive, and states that the better the sight of the ant (and 



