ON THE ORIGIN OF ENTOZOA, &C. 379 



This Lamia is most commonly found under stones, or crawling 

 on walls, and appears to approach in habits the Dorcadion 

 genus. 



15. Gryllus Italkus. Fab. — The only species of locust in 

 Cephalonia which appeared in such numbers as to prove 

 destructive. The larvas appeared in May : some were very 

 small, and they quite covered the ground for several yards, 

 leaping in every dwection when approached. The grass was 

 always burned and withered in the places they frequented. 

 The full-grown locust appeared about the middle of June, 

 and on examining one, which I caught, I found a great 

 many large pink eggs attached to the imder wings, which 

 were likewise pink. I extremely regret not being able to pay 

 more attention to this circumstance, nor to bi'eed the parasites. 

 How these eggs came to be attached to the wings, which are 

 under and protected by the tegmina, it is difficult to con- 

 jecture. I mention this as a hint to such entomologists as are 

 in localities with Gryllus cccrulescens^ our English and closely 

 allied species. 



Nov. 4, 1835. 



Art. XXXV. — On the Origin of the Enlozoa in the Bodies of 

 Animals. By Henry Metford, M. R. C. S. 



The term JE//^o^oa (from the Greek tvroc, within, and ^wov, 

 an animal) was first employed, by Rudolphi, to designate all 

 those creatures which naturally and permanently infest the 

 interior of other animals ; the first part of the definition ex- 

 cluding all those which reside in the animal for a limited 

 period only, such as the larvae of insects, &c. ; the latter part 

 of the definition being used in contradistinction to Ectozoa, 

 or those animals which inhabit the surface of the body. The 

 term * Parasite has also been applied to them, probably 

 from an analogy between their mode of life and that of a court- 

 spunger, or any other animal living on the labour, or at the 

 expense of another; but as this includes a great variety of 

 living creatures, exceedingly dissimilar in other respects, this 

 single point of similarity does not furnish us with the ground- 

 work on which to found a rational nomenclature. The very 

 simple structure of the Ento^oa points out to us the necessity 



