1904.] 



EARTHWORMS FROM NEW ZEALAND, 



247 



preceding species ; when viewed from above d is dorsally antl c 

 laterally placed, but in the tail the line c approaches d. 



aa = ab = cd; bc>ccb; dd>hc. But the difterences, measured 

 in millimetres, are very slight : thus aa=2-5 ; 6c = 3 ; dd = 4:. 



The clitellum is well marked, complete, and covers the four 

 segments 14-17; but the ventral surface of the last segment is 

 less glandular than the rest. 



Genital pores, tt'c. (text-fig. 70). — On segment 18 is a pair of 

 subcircular depressions, with a distinct, slightly raised margin ; 

 this is in line a. 



Text-fie-. 70. 



!7 



8 / 



20 / 



/ 



A. B. C. 



Tokea urewei-ae, similar view to that in text-fig. 62. (X 6.) 



There is a single, median Uthercidum pithertatis, in the foi'm of 

 an oval, glandulai-, depressed area, extending from a-a, between 

 segments 19/20. 



The three pairs of spermathecal pores aie in line a. 



Internal Anatomy. 



The seven septa, behind segments 6 to 12 are only slightly 

 thicker than the following. 



The last heart is in segment 12. 



The micronephridia are more delicate than in the preceding 

 species, and do not form so dense a covering to the body-wall. 



The meganephridia are confined to the last 12 to 15 segments. 



The gizzard (in segment 5) is longer than in T. escidenta, 

 though not so wide. 



The oesophagus is more or less dilated in segments 11-15; and 

 in the first two of these the thick vascular wall is provided with 

 lamellfe internally. 



The prostates extend back to the 26th segment ; the muscular 

 duct is long, narrow, and more or less undulating, becoming 

 thicker where it dips into the body-w^all. 



