W. W. Smith. — On New Zealand Earthivorms. 169 



opens, it may be inferred, into the buccal cavity ; I did not, 

 however, succeed in seeing the actual orifice. In the rest of 

 the body the nephridia are also constructed upon the plan 

 which is characteristic of 0. ^nuLtvporus ; the tufts appear to 

 be massed chiefly around the setae. 



"Both testes and ovaries occupy the usual segments, but 

 the gonads are attached to the posterior wall of their re- 

 spective segments, as they are in AcanthodriUts annectens and 

 in Octochcetiis multii^orus. 



" The racemose sperm-sacs are in xi., xii. 



" The spermatothecse are elongated pouches in viii. and 

 ix. ; they appear to have numerous minute diverticula crowded 

 round the duct near to its external opening. 



" The atria do not extend beyond their proper segments. 

 A nun^ber of strong muscular bands, such as occur in Octo- 

 chcetus multiporus, pass from the lateral to the ventral walls 

 of segments, and serve, no doubt, to extrude the papillse 

 already spoken of, on to which the atrial pores open. There 

 are no penial setse. 



" This species is clearly most intimately related to 0. 

 multiporus ; indeed, it is not a little difficult to separate the 

 two ; the difficulty, too, is increased by the variability of the 

 larger species. This difference of size is the most obvious 

 difference ; and it is, I think, a difference that must be 

 allowed. The variability of 0. multiporus unfortunately con- 

 •cerns those very organs upon which I had at first attempted 

 to lay stress as distinguishing the two. In some individuals 

 of Octochcetus multiporus the gizzard is limited to the sixth 

 segment, the second septum lying just in front of it, attached, 

 therefore, to the oesophagus ; but in other specimens this 

 septum is inserted on the gizzard itself, which thus occupies 

 two segments, as in Octoclicstus thomasi. In two individuals 

 the single pair of calciferous glands are in segment xviii. ; but 

 in others, as is the case with Octochcetus thomasi, in the 

 seventeenth. Another possible distinction between the small 

 and the large species concerns the dorsal vessel ; in 0. thomasi, 

 as already mentioned, this vessel is single until the seventh 

 segment. In a specimen of Octochcetus vmltiporus the dorsal 

 vessel was single until the commencement of the sixth seg- 

 ment only ; in this segment it became double ; in another the 

 single dorsal vessel became double at the septum separating 

 v./vi., but immediately after the two halves became fused, 

 to again divide about the middle of the segment. The shape 

 of the gizzard and its relative strength in the two species does 

 appear to differ ; in the smaller species it is proportionately 

 longer and narrower than in the large species. 



" The next new species cannot by any possibility be con- 

 founded with the foregoing. I name it after Captain Hutton, 



