'G36 ox SOME SEW AUSTRALTAX TUBICOLOUS AXXELIDS, 



greatest breadth being about a twelfth o£ the length, composed 

 of thirty segments, the length of vrhich in the anterior region of 

 the body is about a third of the breadth.* The prsestomium is 

 small and not separate from the buccal segment. The whole 

 head presents the form of a subconical lobe, about one-tenth to 

 one-twelfth of the total length of the animal, with the mouth at 

 the truncated apex ; on the middle of the dorsal surface of this 

 lobe are two longitudinal ribs, the anterior ends of which project 

 a little above the mouth ; at the hinder end of these is a shorter 

 anteriorly divergent pair of ridges, and on either side of them 

 bounding the dorsal surface of the head, a third pair of broad 

 ribs which converge from before backwards. Protruding front 

 the mouth are a number of feathered, ringed, oral tentacles. On 

 the three first pairs of somatic segments, which are not very 

 distinct, there are three pairs of cylindrical cirri which are some- 

 what longer than the breadth of the body, aird a pair of foliace- 

 ous branchise of about the same length, but wide, thin and leaf- 

 like ; these appendages are very readily detached ; behind the 

 root of each branchia are a number of short cylindrical processes. 

 On the same segment there is on each side a bundle of ten long 

 smooth tapering setie, arranged in the form of a fan and directed 

 forwards and outwards. The parapodia are biramous, the 

 notopodia with slender, tapering, perfectly smooth setse ; at the 

 extremity of each notopodium on its dorsal aspect is a rounded 

 knob-like projection, and nearer the base is a short cirrus, on the 

 ventral aspect is another short tubercle ; the neuropodium is a 

 small elevation with numerous short pectinated setae presenting 

 a curry-comb-like appearance. 



The length is about an inch. The tube is formed of cemented 

 sand-grains. 



Two specimens of this species were obtained with the dredge 

 at a deptli of 15 fathoms in Port Molle, during the cruise of H. 

 M.S. "Alert" on the Queensland Coast. 



* A portion of the hinder extremity of the body is lost. 



