256 SUBANTARCTIC ISLANDS OF NEW ZEALAND. \Oligoch<wta. 



two species of PelodrUus ; at the Cape of Good Hope — one species of Pdodrilus. 

 The genus is a lover of moist earth. 



The new species of Lutnbricillus is closely related to L. vernicostis and L. maximus, 

 both of which occur in subantarctic regions ; but the genus is found all over the 

 Northern Hemisphere. 



The genus Marionina, although of northern origin, has several species in the 

 subantarctic region — viz., on Tierra del Puego, South Georgia, Kerguelen, and 

 Crozet Island. 



The genus Enchytraeus is a European one, and the species E. alhidus has been 

 recorded from south Patagonia, Tierra del Fuego, and the Crozets, as well as from 

 the main islands of New Zealand. 



Fam. PHREODRILIDAE. 

 Phreodrilus, Beddard, 1891. 

 Phreodrilus campbellianus, n. sp. (Plate X, fig. 1.) 



A considerable number of this worm were collected in February, 1907, but are 

 poorly preserved. 



Colour (in alcohol) white anteriorly, while the translucent body- wall posteriorly 

 leads to a greyish tint ; the clitellum is pale brown. 



Dimensions. — As the worms are a good deal twisted, it is difficult to give accu- 

 rate figures, but they are approximately 18 mm. by 1 mm., with about 60 segments. 

 Except for the 3 anterior segments, they are each biannulate, consisting of a very 

 short anterior annulus and the chief posterior annulus. 



The prostomium is short, blunt, with a broad base ; it is nearly as long as the 

 first 2 segments together. 



The chaetae are arranged as in P. lacastris ; the ventral couple are of two kinds, 

 a simple sigmoid and a notched chaeta, though in some segments both are notched. 

 The dorsals are solitary, capillariform, and commence on the 3rd segment. 



The clitellum, which is yellowish-brown in colour, covers segments \ 12, and 13 ; 

 and extends all the way round the body. 



The rnxde fare is on a slight prominence at the anterior margin of 12, from which 

 in one specimen at least a penis protrudes. 



The spermMhecal pore is of large size, near the anterior margin of 13. Both these 

 pores are in line with the ventral chaetae, which, however, are absent in 12, 13 ; and 

 there are no penial chaetae, as in P. lacustris. The female pore at 12/13 is invisible 

 externally. 



Internal Anatomy. 



Septal glands lie on each side of septa 4/5, 5/6, and at the anterior face 

 of 6/7. 



There are no enlarged hearts, though the dorsal blood-vessel is enlarged in 5, 

 6,7. 



There is no gizzard ; the oesophagus is narrow up to the 10th, then suddenly 

 opens into the intestine. 



