Annelida fi'om Kery Helenas Island. 321 



ward the long tentacular cirri reach to the fourteenth segment. 

 The maxilUe have about eighty distinct teeth behind the point. 

 The paragnathi form, near each maxilla, five long rows and 

 four shorter ; and there are besides several interrupted trans- 

 verse rows between the former on the ventral surface. All 

 are composed of denticulate horny processes of microscopic 

 size. The anterior feet have blunt processes ; their cirri are 

 shorter ; and the bristles have on the whole shorter tips than in 

 N. Dumerilii. The articulating end of the shaft in the latter 

 organs has also a somewhat wider pit for the terminal process. 

 At the twenty-fifth foot the superior lingula is rather larger 

 than in N. Dumen'h'i, and the outline of the other processes 

 also differs. Toward the posterior extremity {e.g. the sixtieth 

 foot), again, the superior lingula forms a very prominent elon- 

 gated process, which is much thicker and less pointed than in 

 the British form ; and it also differs from N. polyodonta^ 

 Schmarda, in this respect. 



Hah. Royal Sound, Kerguelen's Island {Eaton). 



Family Terebellidae. 



Genus Amphitrite, O^ F. Miiller. 



AmpMtrite kerguelenensisj n. sp. 



A large form with seventeen setigerous tubercles. The 

 cephalic region shows four lobes, viz. the ventral anterior lobe, 

 a large process in front and beneath the first branchia, a fan- 

 shaped lobe, and finally a large fold running from the root of 

 the last branchia downward. The long bi-anchije spring from 

 three short trunks on each side. There is a prominent papilla 

 below each setigerous tubercle in the first six segments, and 

 in addition a similar process below the second branchia. The 

 ventral scutes appear to be twelve. The hooks somewhat 

 resemble those oi A.affims, Mgrn., but differ in the anterior 

 curvature. The colour of one specimen was purplish brown. 



The species forms a heavy tube of fine mud, lined by a thin 

 chitinous secretion ; and, from the flattening of the ventral sur- 

 face, it would appear to lie on the bottom. 



Hab. Royal Sound, Kerguelen's Island {Eaton). 



Genus Neottis, Malmgrcn. 

 Neottis antarctica, n. sp. 



A very, large member of the family, differing from Thelepua 

 in having three groups of branchiae on each side, and from 



