New Zealand Earthworms. 139 



reddish [as it is in the latter] or olivaceous green" [as in tin; 

 former worm]. The position of tlie clitellum is said to bo 

 *' irregular, commencing on any segment from 10 to 20," 

 which is inaccurate whichever worm he referred to, though 

 it is not so far out if Neodrilus was before him. Further, 

 " the male genital pores [by which he means the sperma- 

 thecal j)ores] are on the ninth segment " is true for yeodrilas*, 

 for in tiiis worm these pores are fairly conspicuous, whicli is 

 not the case in Lumbricus. The statement '' vulvas \i. e. the 

 male pores and papillte] on the two last segments of the 

 clitellum " evidently refers to Neodrilus. His accounts of 

 the chtetffi and prostomium apply equally to either worm. 



His statement that " the olivaceous specimens occur in the 

 bush " is perfectly correct, whereas the red [L. rubellas) is 

 common in the gardens round the towns. 



(3) " Lumhricus levis^ — Of this there were two bottles : — 

 (a) " Hampden," contains one individual measuring 1^ inch 

 in length, with spaced nearly equidistant chfetaj on each 

 side: — If a be the most ventral chaita, a — b = c — d ; while 

 b — c is slightly greater than a — b ; and a — a = d — d=2 a — b. 

 The clitellum covers segments 14 to 19. The worm is not 

 fully mature, and I am unable to recognize the male pores. 

 Internally — for I dared to open the type — I note that the 

 dorsal vessel is double throughout, as in some species of 

 Octocluetas ; there is a large gizzard in the sixth segment, and 

 two ])airs of spermathecje in segments 8 and 9, each with a 

 single small rounded diverticulum lying in the same segment. 

 These are all the facts that I was able to be sure about, 

 but they are sufficient to refer the worm with the greatest 

 probability to the genus Octoc/uetus. It is smaller than any 

 of Beddard's species. 



{b) Labelled " Dunedin," contains also a single specimen 

 measuring 4 inches, and is Allolobophora caliginosa, one of 

 the commonest introduced species about the town. 



Hutton's account of " Lumbricus levis " seems to have had 

 reference to this individual, for he gives the length as " 3 to 



4 inches ; pale flesh-colour Seta3 feeble, in four rows 



behind the clitellum, absent before the clitellum." This last 

 statement I cannot understand ; moreover he represents them, 

 correctly, on the anterior segments ; yet he points out that 

 in this particular the worm differs from L. communis, another 

 name for L. caliyinosa. 



* In the method of enumeration now adopted we must subtract one 

 from liuttou's numbers. 



10* 



