BY WILLIAM A. HASWELL, M.A., B.SC. 745 



The parapoclia are well developed except in the first few 

 segments. Each has two prominent lobes. The ventral cirrus 

 is rather shorter than the pai^apodia, not distinctly divided by 

 joints ; the dorsal cirrus is very long, as long as the body is 

 broad, similar to the peristomial tentacles ; moniliform at the 

 extremities, with the joints (usually about 30 to 40) very distinct, 

 except at the base. The dorsal cirri become very short towards the 

 anal end of the body ; the anal cirri ai-e considerably larger than 

 the dorsal cirri of the posterior segments of the body. The setae, 

 all compound, are about ten in number in each parapodium ; the 

 distal end of the shaft is very finely ciliate on one margin ; the 

 apical portion of the seta (blade) ends in two well-pronounced 

 teeth and its border is ornamented with fine cilia. There are 

 several stout aciculi, very slightly curved at the apex. 



The oesophagus extends as far back as the seventeenth segment ; 

 it contains a single hyaline tooth and a circlet of papillae. The 

 gizzard extends over the following nine segments ; the proven- 

 triculus over four segments ; the caeca are two pairs, the anterior 

 the larger. The intestine presents very deep inter-segmental con- 

 strictions. 



The segmental organs are narrow brown tubes opening on the 

 ventral aspect. The external orifice is a rounded opening situated 

 at a point a little internal to the base of the ventral cirrus ; from 

 this point the tube runs inwards and backwards, then curves out- 

 wards to open by a wide aperture into the cavity of the segment. 

 The tube is lined with somewhat irregular cells, having internal 

 rounded ends, with the summits of which the long cilia are con- 

 nected. It is very rare to find the cilia in active movement in 

 specimens examined under the compressorium. 



Found under stones between tide marks, at Neutral Bay, Port 

 Jackson. 



This species bears some likeness to Syllis variegata, Grube, but 

 is much broader in proportion, has shorter tentacles and cirri, the 

 palpi more divergent, and the head more pointed. 



This species, like many of the family, increases by a process of 

 budding and fission. About the 95th segment of the body in a 



