AMPHARETIDAE 



173 



region. This is the most easily appreciable difference between ehlersi and belgica which 

 has hooks with seven to eight teeth in profile instead of four. 



Remarks. The present material consists of one ill-preserved complete specimen 

 (St. WS 236) measuring 21 mm. by 3 mm. at the widest part, and one anterior fragment 

 of about eight chaetigers. 



Nilsson attributes this species to the subgenus Cistemdes which he separates from 

 Pectinaria, sensii Malmgren, almost entirely on the presence in the former of a granular 

 area on the dorsal surface of the segment preceding the scapha. I am not convinced that 

 any good purpose is served by retaining these subgenera. The rather ill-preserved 

 scapha in the present specimen corresponds to Hessle's figure except that I cannot see 

 the two lateral papillae at the sides of the anal ligule, and the hinder border of the latter 

 appears to be faintly crenate and not smooth, as Hessle figures it. The tube is composed 

 of small brown sand-grains and is very slightly curved. 



Family AMPHARETIDAE 



I. 



Paleae present 



Paleae absent 



Tentacles smooth... 



Tentacles pinnate 



Tentacles pinnate 



Tentacles smooth... 



Prostomium trilobate 



Prostomium rounded, without lobes 



... 2 

 3 



. . Amphicteis 

 .. Ampharete 

 Neosabellides 



4 



Amage 

 Phyllocomus 



Genus Ampharete, Malmgren 



Prostomium distinctly trilobate, without raised glandular bands. Tentacles pinnate. 

 Branchiae four pairs. Paleae well developed. First notopod reduced. No dorsal cirri in 

 the thoracic region, but present in the form of small tubercles in the abdominal region. 

 Often small neuropodial cirri above the pinnules in the abdominal region. Anal cirri 

 present. 



Ampharete kerguelensis, Mcintosh. 



Mcintosh, 1885, p. 426, pi. xlvii, fig. 10; pi. xxvIa, figs. 22-24. 



Hessle, 1917, p. 100. 



Augener, 1926, p. 223 and 1932 a, p. 57. 



Occurrence. St. WS 177 (4). 



Specific characters. The largest specimen measures 20 mm. by 2 mm. The two 

 groups of gills are joined across the back by a transverse fold of the integument. 



The rather blunt apexes of the paleae are surmounted by delicate filiform tips. There 

 are 14 pairs of thoracic notopods and 12 of abdominal neuropods. The dorsal cirri in the 

 abdominal region are very little developed and there are apparently no neuropodial 

 cirri. The bristles are bordered capillaries, and the thoracic hooks have two vertical rows 

 each of five to six teeth : the abdominal hooks have three vertical rows each of about 

 five teeth. The anus is papillated. 



15-2 



