240 Transactions. 



amplify that account. Seven individuals were received from 

 Mr. Best, 



Colour. — Alive it is dark-brown ; preserved in formol, pur- 

 plish-red. Some are marbled with paler streaks and patches 

 towards the hinder end. 



Dimensions. — The specimens range from 135 mm. by 6 mm. 

 up to 290 mm. by 9 mm. A medium-sized individual contains 

 192 segments ; the largest, 210 segments. 



The clitellum,, which was not fully developed in the type, 

 covers segments (13) 14-18 (19)— that is, the dorsal surface of 

 either or both the 13th and 19th may be glandular, but the seg- 

 ments are separated by a furrow from the rest of the organ. It 

 completely surrounds the body, except on the ventral surface of 

 segment 18, where a transverse depression surrounded by a ridge 

 extends from chseta b to b. In the type this ridge has, by con- 

 traction of the body, closed over the depression. 



There are no other tubercula pubertatis. 



The prostates are larger than in the type, which was not fully 

 mature ; they extend back to the 26th segment. The duct is 

 short, narrow, curved, and confined to the 18th segment. 



hoc. — Ruatoki ; some twenty miles inland, in the County of 

 Whakatane. Mr. Best writes : " The worms were obtained in 

 the foothills, where the soil is principally volcanic— pumice, &c, 

 with a covering of humus, and a few beds of clay." 



2. Tokea maorica, Benham, P.Z.S.. 1904 (ii), p. 252. 



Under this title I have confused two species, which are 

 evidently closely allied, but which I believe are distinct. The 

 account and figures of the external features were taken from a 

 small species, which should, I suppose, retain this name ; whereas 

 the internal anatomy was studied on a larger species, to which 

 a new name must be given. 



I drew attention to the fact that there was a considerable 

 range in size, in contrast to the constant number of segments. 

 But I now find that the smaller ones possess two tubercula 

 pubertatis, the larger ones only that in segment 18. 



The characters of T. maorica, thus amended, are as follows :— 



Colour. — Very dark purplish-brown, extending far down the 

 sides of the body and along the whole length. 



Dimensions. — 25-35 mm. by 2 mm. ; or, in soft, ill preserved 

 •specimens, 50 mm. 



The choztal formula is ab=aa; bc=cd > ab ; dd='2ab. 



The clitellum occupies segments (13) 14-17, complete. 



There are two median tubercula pubertatis, having the dis- 

 position shown in text-figure 80 (loc. cit.). 



The spermathecal pores are in segments 7/8 (not, as is stated 



