246 DR. \V. B. BENHAM ON [NoV. 15, 



Ghcetce. These are smaller than in T. esculerda, and have a 

 different arrangement ; for, when viewed from above, d is more 

 laterally placed and c is not visible. In other words, the dorsal 

 gap [dd) is much greater. The formula is: — ab = cd; be > cob; 

 ««= 1| ab ; dd = 5 cob. I cannot detect any chfetse in front of the 

 10th segment on examination by a dissecting- lens. 



Clitellum : not yet fully developed, as intersegmental grooves 

 are still unobliterated, though the difference in colovn- is well 

 mai'ked. It is "complete," and covers the five segments 14-18. 



Genital po7'es, (kc. (text-fig. 68, p. 245). — On segment 18 is a pale, 

 tumid, transversely disposed ridge, somewhat enlarged at each end : 

 it extends from b-b, and chasta a appears to be absent. The actual 

 male pore is uncinate, and on the mesial side of 6, but close to it. 

 No txoberciola pubertcotis are present. The thi-ee pairs of sperma- 

 thecal pores are at 6/7, 7/8, 8/9, in line with the gap cob. 



Interned Anatomy. 



There are eight stout septa, behind segments 6-13, but the 

 first and last are less stout than the others. 



The last heart is in segment 13. 



The gizzard, in segment 5, is of large size ; the oesophagus 

 presents no dilatation. 



The nephridia have the same genei-al arrangement as in 

 T. esGulentcc. 



The genital organs agree on the whole with the latter species ; 

 but in the single individual in my possession the prostates are 

 asymmetrically arranged, viz., the left gland extends back to 

 segment 23, and then bends forwards and ends in the 23rd 

 segment. But the right gland is bent in an S-shaped manner, 

 and lies wholly in segments 18, 19, and 20 ; but, as in the 

 pi'eceding species, both are pressed against the body-wall. 



The spermathecse, in segments 7, 8, 9, differ in shape ivo\n 

 those of T. esGiole7itct ; the diverticulum (text-fig. 69, p. 245) being- 

 globular, with a short duct, opening into the spermathecal duct 

 close to the body- wall. 



Loc. Ruatahuua, North Island, New Zealand. 



3. ToKEA UREWER^, sp. u. (Text-figs. 70-72.) 



This worm is known to the natives as " Pokotea," and is 

 described by Mr, Best as " a short white worm." I received 

 three specimens, which in formol are quite a pale pinkish brown, 

 paler still behind the clitellum, Avhich is orange or orange-brown, 

 with a dusky anterior margin. 



Dimensions. 65 to 80 mm. in length, with a diameter of 7 or 

 8 mm. ; there are 78 segments in the larger individual. The 

 segments are not annulated. 



The prostomium is | epilobic ; without a transverse furrow. 



The chcetcB have the same general arrangement as in the 



