BY T. G. SLOANE. 573 



in his book " Darwinism " (Chapter ix., p. 258). I have seen at 

 Mulwala, N. S.W , a moth that resembled a common ichneumon 

 wasp; and, at Brisbane, running on the trunks of trees, a Man- 

 tispa that looked like a tiger-beetle. There are instances of 

 convergence between, insects of difterent Orders, which are 

 attributed by naturalists to "mimicry," and (as in cases of re- 

 semblance due to protective colouring among animals, birds, and 

 insects) we can here see a cause for convergence. 



Coming to the Order Coleoptera, there are many cases of 

 convergence, as when longicorn beetles resemble weevils and 

 Malacoderms (perhaps mimicry). Often when the general 

 resemblance is not great, there is similarity in different parts 

 of the body. For example, the large, convex labrum covering 

 the mandibles in Di/stipsidera (Cicindelidse) and Helluonidius 

 (Carabidae) ; the elytra, with lateral parts inflexed (pseudo- 

 ejnpleurcE), in Mantichora and AmhlychUa (Cicindelidae), and 

 Sforthodonfus, Dyscherus, and Grepidopterus (Carabidae) ; 

 the posterior trochanters pointed at apex in AmhlychUa and 

 Parroa (Carabidae). 



Taking the Carabidae, the following instances of convergence 

 may be noted ; doubtless many others would be found by care- 

 ful study. 



Clypeus and mandibles armed — some species of the genera 

 Carenidium and Carterus. Maxillae with outer lobe in one 

 piece — Auierizus, GalUstus, Stenochila and Homothes. Sub- 

 mentum armed — Diodes and some species of Gigadema. Ely- 

 tra multistriate in the genera Famhorus, Loricera, Tachys (T. 

 ncrvosus SI.), Planetes (P. ausfralis Macl.), Gatascopus (G. 

 mirabilis Bates). Ventral segments with a transverse sulcus — 

 Glivina, Diccdus, Baripus, Gratoyaster, etc. Anterior femora 

 more or less dentate on lower side in cT — Blethisa, Mystropo- 

 7nus, some species of Ghlcenius, Rhceholestes, etc. Penultimate 

 joint of tarsi bilobed — A mhlytelus, Golpodes, Helluonidius, 

 Sarothrocrepis, etc. 



These are all cases in which the resemblances seem more 

 likely to be due to convergence than to reversion ; but, as the 



