554: NOTES ON AUSTRALIAN EARTHWORMS, 



The alimentary canal is very similar to that of the previous 

 species but with the following points of difference : the crop lies in 

 segment v instead of vi, and the reniform stalked, intestinal 

 glands in segments xiv to xvi are wanting, the portions of the 

 canal in these segments being only thick-walled and swollen, 

 glandular, vascular, but without diverticula ; the large intestine 

 begins in xvn. 



The generative organs are also very similar : two pairs of 

 racemose testes in segments xi and xn, attached to the anterior 

 mesenteries, the only noticeable thing about them being that 

 they were even absolutely somewhat the smaller in this species ; 

 two pairs of vas deferens funnels in segments x and xi, leading 

 into a main vas deferens on either side which doubtless joins the 

 prostatic duct of the same side, but in my specimens their relations 

 could not be determined ; two pairs of spermathecae in segments 

 vui and ix, opening anteriorly, elongate, narrow, almost cylindrical 

 sacs (about 7 mm. long and l£ mm. wide), the diameter nearly 

 uniform so that the duct is short, a protuberance or rudimentary 

 caecum given off anteriorly close to proximal end, the proximal 

 portions not coiled, the sacs not folded inwards ; a pair of ovaries in 

 xni ; and two oviducts, having the same relations as in the smaller 

 worm. 



The vascular and nervous systems have not presented any 

 conspicuous deviations from the smaller worms. Small tufts of 

 glandular tubes coating the ccelomic wall, more conspicuously in 

 the anterior region of the body, are probably the segmental 

 organs. 



Hab. — Burrawang, N.S.W. 



i &5 



4. DlDYMOGASTER SYLVATICUS, g. et Sp. n. 



(Plate IX, fig. 7 and 8.) 



The worms thus designated when their form and general appear- 

 ance, their habits, and certain structural characters are considered, 

 differ so markedly from any other known Australian worms, as to 

 necessitate, in my opinion, the creation of a new genus for their 



