Oligochaeta.] SUBANTARCTIC ISLANDS OF NEW ZEALAND. 265 



Each of the tubercula pvbertatis is a spherical mass of club-shaped cells, filled 

 with smaller spherules than the cliteUar cells, but highly refringerit, and unstained 

 in borax-carmine as they are ; they are about one-quarter the diameter of the cliteUar 

 spherules. AU the cells are of the same length, the necks or ducts being convergent, 

 and are usually deeply stained. 



The single pair of ovaries lies in the usual position in the 12th segment ; and a 

 paired ovisac, containing large ova, passes through 13, 14, and 15. 



The single pair of spennathecae lies in the 8th ; each is a long club-shaped sac, 

 confined to this segment, and opening by a short narrow duct at the anterior margin 

 of the segment. 



Localities. — Auckland Islands: (a.) Camp Cove magnetic station; (two speci- 

 mens), (b.) 200 ft. above the Watering Creek ; (five), (c.) Masked Island ; (one). 

 (d.) Under logs, near camp; (several), (e.) Soil, North Arm, Carnley Harbour; 

 (one). (/.) Port Ross; (two), (g.) Fairchild's Garden, Adams Island; (thirteen). — 

 Campbell Island : (A.) Several ; (W, B. B. and W. K. Chambers). 



Remarks. — This new species agrees with P. ignatovi, Mich.,* P. darlingensis, 

 Mich.,t and P. africanus, Mich., J in (1) having the male pores on successive seg- 

 ments 11, 12, as in the genus Haplotaxis, and (2) a single pair of oviducal pores 

 at 12/13 ; and it agrees with P. violaceus, Bedd.,§ P. darlingensis, and P. africanus 

 in having a single pair of spermathecal pores at 7/8. But from all the previous 

 species it differs in various ways : the Western Australian species (P. darlingensis) is 

 smaller, and the dorsal chaetal gap {dd) is about equal to half the circumference of 

 the body, while it is much less in this new species ; but in none of the species 

 is any mention made of the glandular copulatory ridge on the 11th segment. 

 Further, the position of the male pores on the segment is different : in the Western 

 Australian species they are outside the chaetae, whereas in this they are in line with 

 them. 



Pelodrilus aucklandicus, sp. nov. (Plate XI, fig. 15.) 



This is apparently a rarer worm, for only three individuals were collected. 

 The segments are well defined by deep intersegmental furrows, 



Dimensions. — The length is 55 mm. by 1-25 mm., with 140 segments in the fully 

 mature specimens. 



Colour. — Grey (in alcohol), the body-wall translucent, except the anterior end, 

 which is opaque-whitish ; the cuticle is thinner than in the preceding species, and 

 somewhat less shiny. 



Prostomium short, conical, rather more pointed than in the previous species, 

 with a narrower base. 



Chaetae in couples, aU sigmoid, the dorsal and ventral being of equal length 

 throughout the body — aa is less than be, which is less than dd. 



* Michaelsen, Verhandl. Naturwiss. Vereins. in Hamburg, 3, folge x, p. 3, 1903. 

 t Mkhaelsen, Die Fauna S.W. Austral., bd. i, Oligochaeta, p. 134, 1907. 

 % Michaelsen, Die Oligoch. Deutsch. Sud-polar Exped. 1901-3, p. 19, 1905. 

 § Beddard, Trans. Roy. Sec. Edinburgh, xxxvi, p. 292, 1891. 



