400 NOTES ON AUSTRALIAN EARTHWORMS, 



Setae of the ordinary shape, stouter, twice as long (about 0"7 mm.) 

 and further apart in the anterior region ; on the first setigerous 

 segments 16 per segment, increasing to 20 for a number of 

 segments, while behind the girdle the number is from 28 to about 

 30 ; the dorsal interval at first very broad, about four times the 

 width of the interval between two sette, gradually diminishing until 

 it is no broader than an ordinary interval ; the ventral interval 

 not quite so wide, noticeable throughout. 



The male pores are on papillse on xviii, apparently also a second 

 pair of 2)apill£e on this segment but without pores (the large speci- 

 mens have the ventral portion of xvii-xix swollen and the male 

 pores on circular papillae); papillae with pores on xvii and xviii ; 

 only indistinct swellings on ix and x. 



In other respects this species is like P. austrina and requires 

 no further description here, 



Hab. — Guntawang, N.S.W. 



Mr. A. G. Hamilton of Guntawang, who sent me specimens of 

 this species, informs me that three of them were samples of some 

 hundreds found dead in an anabranch of the Cudgegong River, in 

 December 1886 after a flood, the first for fifteen years. Apparently 

 during a succession of dry seasons the worms had betaken them- 

 selves to what, in wet seasons, is the bed of the anabranch, whence 

 they had been dislodged, and drowned by the flood. The speci- 

 mens sent had been dead some time before they were noticed, 

 hence they are not in very good condition for examination ; but 

 though the paj^illse carrying the male pores and the accessory 

 cojjulatory structures are slightly different, they appear to belong 

 to the same species as the other specimen which was dug out of 

 the river-bank. 



PERICHiETA WiLSONIANA, n. Sp. 



Largest of eight (spirit) specimens 94 mm. long, 4 mm. broad ; 

 comprising about 120 segments. Clitellum of three complete 

 segments, xiv-xvi, together with more or less of xvii, but in one 

 case including sviii, xix and part of xx ; this specimen therefore 



