278 SUBANTARCTIC ISLANDS OF NEW ZEALAND. [Oligucliacta. 



The range in size is greater than that recorded in my original account, the speci- 

 mens then at my diposal being all in a soft, ill-preserved condition. Those recently 

 collected by me are in a better state, and the worm has a smaller average lengtli 

 than I supposed. 



The mature animals vary from 60 mm. to 115 mm., with from 83 to 110 segments. 



Localities. — Auckland Islands : (a.) Carnley Harbour ; sea-shore ; (W. B. B.). 

 (6.) On plants, (c.) Adams Island; Fairchild's Garden {Pleurophyllum meadow); 

 (W. B. B. ; February, 1907). (rf.) Top of hill above western entrance to Carn- 

 ley Harbour; (W. B. B. ; February, 1907). (c.) Norman Inlet; sea-shore; 

 (G. R. Marriner). 



Campbell Island : [a.) Mount Honey ; (W. B. B. ; February, 1907). [h.) Monu- 

 ment Harbour ; (J. B. Mayne). (c.) Sea-shore ; (C. Chilton). ((/.) Tussock, near 

 shore ; (H. B. Kirk and W. K. Chambers), (r.) Under moss. Monument Harbour ; 

 (G. R. Marriner). 



\'ar. waterfieldi, nov. 



Wliile at the Snares in February four specimens of a Rhododrilus were collected 

 which differs only in unimportant details from R. cockaijni, worthy jjerhaps of varietal 

 recognition owing to geographical rather than anatomical reasons. I therefore name 

 it after the Private Secretary to His Excellency. 



Pale grey in colour, the size varies from 58 mm. to 78 mm., with 90 segments. It 

 is rather curious that the same number of segments occurs in each individual. 



The chaetal formula agrees with that of the type, as does the position of the 

 clitellum. There are, however, only two spermathecal pores ; and were it not that 

 in some individuals of R. cockayni I note this reduced number I sliould place this 

 variety in a new species. 



The tubercula pubertatis occur on the 19th segment, large and paired so as to 

 look like the porophores of Notiodrdus. which I at first glance supposed it to be. 

 The papilla possesses three stout chaetae. of which two are " reserves " : the third 

 is a normal locomotor chaeta. 



There is a second pair of tubercles on the 9th segment, outside tlie chaeta b. 



The only internal difference is the existence of only two pairs of spermathecae, 

 in segments 8, 9, each with a tubular diverticulum as long as tlie ampulla. The other 

 genitals agree with R. cockayni. 



Subfam. MEGASCOLBCINAE. 

 Plutellus, Perrier, 1873. 

 Plutellus aucklandicus, sp. nov. (Plate XI, figs. 23-2(5.) 



This worm forms a marked contrast to the rest of the eartliworms collected 

 on the Auckland Islands, in being white. Several individuals were obtained, both 

 during the stay of the exjjedition and in the short visit I paid in February. Tlie 

 specimens at both times of the year were at various degrees of maturity. 



The colour is white, with orange-brown clitellum, and has quite the appearance 

 of a species of Octochaetus, for which I at first mistook it. 



