1012 NOTES ON AUSTRALIAN EARTHWORMS, 



antero-posteriorly ; the third has a narrow transverse depression 

 with a raised vein very much as in some specimens of the typical 

 form. 



All three have the supposed accessory copulatory structures, 

 two in front and one behind the clitellum, but the former and 

 occasionally the latter instead of being intersegmental may 

 occupy the posterior two-thirds of xii, xiii, and xxi, or becoming 

 only accidentally intersegmental by encroachment. 

 , Alimentary canal : six pairs of calciferous pouches in segments 



VIII-XIII. 



In other respects, so far as I know at present, agreeing with 

 the typical form. 



Hah. — Springwood, Blue Mts. 



The number of calciferous pouches appears to be constant in 

 this variety. Externally there is little to distinguish it from the 

 typical form. 



C. saccarius var. robicstus, var. nov. 



Eight well preserved rather contracted (spirit) specimens 

 112-195 mm. long, 9-12 mm. broad; number of segments from 

 about 250-290: another very young specimen 59 mm, long, 

 5-6 mm. broad; number of segments about 215. 



Accessory copulatory structures : usually one between xii and 

 XIII, and in one specimen a postclitellar one between xxi and 

 XXII (they have probably not attained their maximum develop- 

 ment in any of the specimens). The ventral surface of xviii in 

 some of the specimens without clitella shows a papilla-like thick- 

 ening in the position of the second seta of each side (N".B., the 

 inner couples as in the typical form not visible onxviii) ; in more 

 mature specimens the thickening has increased, and in the area 

 corresponding with the interval between the inner couples the 

 anterior and posterior annuli have become depressed, the middle 

 portion remaining as a distinct papilla apparently with the very 

 inconspicuous male pores which are about in line with or a little 



