378 MR. F. E. BEDDARD ON THE [June 18, 
as distinct. The statement that the latter form differs from 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. campestris are probably referable 
to the genus Digaster. This paper was unknown to me when I 
published my earlier paper upon New-Zealand Earthworms (1). 
Genus ACANTHODRILUS, Perrier’. 
Mandane, Kinberg, Ofvers. K. Vetensk.-Akad. 1866, p. 97. 
Acanthodrilus, Perrier, Nouv. Arch. Mus. t. viii. (1872), p. 85. 
Earthworms with 8 sete, arranged either in pairs or the individual 
setee 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 xvili.; two pairs 
of tubular atria (=prostates, auctorum) opening independently of 
vasa deferentia on to segments xvii. and xix. Penial setee rarely absent 
(in A. multiporus). Oviducal pores paired upon segment xiv. Testes 
in x. and xi. Ovaries in xiii. Spermathece 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. 8. 1885, p. 813. 
2. ACANTHODRILUS NOV# ZELANDIA, F. E. B. 
Acanthodrilus nove zelandie, F. E. Beddard, ibid. p. 813. 
3. ACANTHODRILUS DissiMIitis, F. E. B. 
Acanthodrilus dissimilis, F. E. Beddard, ibid. p. 313. 
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. 
Sete 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 Xiil.—xvii. 
' Rosa (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 | retain Perrier’s name Acan- 
thodrilus. 
