BY J. J. FLETCHER, M.A., B.SC. 377 



from one of the Sydney nurseries, and from one of the enclosures 

 in Hyde Park. It does not agree exactly with any of the descrip- 

 tions I can find, but seems to come nearest the A. prqfuga of 

 Rosa. 



From two of these gai'dens I have numerous specimens of a 

 species of Perichseta (P. peregrina) which is supposed to have 

 come from the Mauritius, and which I have already described. 

 In this paper I describe another possibly introduced species only 

 known to me at present from specimens from Mr. Macleay's 

 garden in Sydney, from some which Professor Rennie has sent me 

 from Adelaide, and from Mulwala. It differs from any other worm 

 I have yet seen from Australia in having the male pores on the 

 seventeenth segment. 



In what follows I give descriptions of ten new species of indige- 

 nous worms, as before taking note of the more prominent 

 anatomical characters, but, in the hope of acquiring additional 

 types, leaving the consideration of morphological details until I 

 come to revise the whole. Of these all but two belong to the 

 genus Perichceta the most abundant Australian type, of which 

 I have previously described several species. They comprise species 

 from N. Queensland, New South Wales, and South Australia, and 

 one of them (P. canaliculata ) collected by Mr. Froggatt in N. 

 Queensland is especially interesting because it is intra-clitellian. 

 Of another species from Mt. Wilson, which I here desci-ibe, all the 

 specimens obtained were postclitellian with a solitary exception 

 which was intraclitellian. These two species therefore are of con- 

 siderable interest because they add additional strength to the view 

 put forward by Beddard, who has met with a similar experience to 

 mine, in the case of the species of Acanthoclrilus, that while 

 Perrier's distinction between anteclitellian and the other two 

 groups into which he has subdivided earthworms is valid enough? 

 his division between the intraclitellian and postclitellian groups is 

 too artificial to be permanently retained, even though in the present 

 state of our knowledge of these animals it may be convenient for 

 the time being to make use of it. 



