New Zealand Earthworms. 139 



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

 former worm]. The position of the clitellum is said to be 

 " 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 pores] are on the ninth segment " is true for Neodrilus*, 

 for in this worm these pores are fairly conspicuous, which is 

 not the case in Lumbricus. The statement " vulvas [i. e. the 

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

 clitellum " evidently refers to Neodrilus. His accounts of 

 the cha3t83 and prostomium apply equally to either worm. 



His statement that " the olivaceous specimens occur in the 

 bush " is perfectly correct, whereas the red (L. rubellus) is 

 common in the gardens round the towns. 



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



(a) "Hampden," contains one individual measuring If inch 

 in length, with spaced nearly equidistant chaataa on each 

 side: — If a be the most ventral chseta, 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 

 Octochcetus • there is a large gizzard in the sixth segment, and 

 two pairs 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 Octochcetus. 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 u Lumbricus levts " seems to have had 

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



4 inches ; pale flesh-colour Setse 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. caliginosa. 



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

 from Hutton's numbers. 



10* 



