378 MR. F. E. BEDDARD ON TBE [JuUC 18, 



as distinct. The statement that the latter form differs froni its Euro- 

 pean ally in the presence of the male pores on segment xvi. (instead 

 of XV.) requires careful verification. 



The two species of Megascolex recorded by Hutton, although 

 evidently differing from each other, are not sufficiently described to 

 permit of their being recognized. 



In a later paper (9), Captain Hutton gives a brief epitome of 

 Perrier's memoir upon the Classification of Earthworms (13), and in 

 a footnote states that his Lumbricus uliginosus is probably an Acan- 

 thodrilus, and that L. levis and L. cnmpestris are probably referable 

 to the genus Bigaster. This paper was unknown to me when I 

 published my earlier paper upon New-Zealand Earthworms (1). 



Genus Acanthodrilus, Perrier'. 



Mundane, Kinberg, Ofvers. K. Vetensk.-Akad. 1866, p. 97. 



Acanthodrilus, Perrier, Nouv. Arch. Mus. t. viii. (1872), p. 85. 



Earthworms with 8 setae, arranged either in pairs or the individual 

 setae implanted at some distance. Clitellum occupying more or 

 fewer of segments xiii.-xix. Prostomium well developed. Vasa 

 deferentia separate up to their point of opening on xviii. ; two pairs 

 of tubular atria {= prostates, auctorum) opening independently of 

 vasa deferentia on to segments xvii. and xix. Penial setae rarely absent 

 (in A. multiporus). Oviducal pores paired upon segment xiv. Testes 

 in X. and xi. Ovaries in xiii. Spermathecse two (rarely 3, in A. 

 communis) pairs in viii. and ix., always furnished with diverticula. 



1. Acanthodrilus multiporus, F. E. B. 

 Acanthodrilus multiporus, F. E. Beddard, P. Z. S. 1885, p. 813. 



2. Acanthodrilus nov^ zelandi^e, F. E. B. 

 Acanthodrilus novce zelandice, F. E. Beddard, ibid. p. 813. 



3. Acanthodrilus dissimilis, F. E. B. 

 Acanthodrilus dissimilis, F. E. Beddard, ibid. p. 813. 



4. Acanthodrilus annectens, F. E. B. 



Acanthodrilus annectens, F. E. Beddard, Quart. Journ. Micr. Sci. 

 vol. xxix. p. 102. 



5. Acanthodrilus antarcticus, n. sp. 

 Prostomium not completely dividing the buccal segment. 



SetcB disposed in 8 longitudinal rows ; 1 & 2 are closer together 

 than 3 & 4. 



Dorsal pores present in all segments after the vith. 

 Clitellum extends over segments xiii.— xvii. 



^ Eosa (14), on the grounds of priority, has reinstated Kinberg's name for 

 this genus, inasmuch as Perrier has shown that Mandane and Acanthodrilus are 

 synonymous. But Vaillant (16) has recently pointed out that Kinberg himself 

 has used the generic name Mandane twice over ; it was first used for a genus 

 of marine Annelids. Under these circumstances 1 retain Perrier's name Acan- 

 thodrilus. 



