322 Mr. W. C. M'Intosh on new Species of Annelida. 



Grymcea by the fact that the bristle-tufts commence on the 

 third segment, and also by the structure of the hooks. The 

 cephalic lobe is fm-nished with numerous ocular specks. The 

 bristles resemble those of Thelejms^ as also do the hooks, 

 which are borne on a thin lateral lamella marked by a band 

 of dark pigment. A single process only appears in profile 

 above the Targe tooth of the hook. The brownish body is 

 peculiarly streaked posteriorly by pale transverse lines. 



The animal constructs a large chitinous tube of a dark 

 brownish colour, on which Polyzoa, Zoophytes, and Algae 

 flourish. 



Hob. No. 3, Kerguelen's Island {Eaton). 



Family SerpulidflB. 



Genus Seepula, L. 



Serpula ? 



The softened specimen resembles S. vermicularis, L., in 

 external appearance ; but the operculum is undeveloped. The 

 branchiae appear to be about forty in number on each side. 

 The anterior hooks are larger than in S. vermicularis , and form 

 a triangle of quite a different shape. The uncini along the 

 edge of the organ are seven or eight in number, the inferior, 

 as usual, surpassing the rest in size. The posterior hooks 

 present the same structure, and are accompanied by the brush- 

 shaped bristles as in S. vermicularis. 



The tube resembles that of the latter, even to the double 

 funnels so often seen in front. 



The absence of the operculum prevents further definition. 



Hah. Swain's Bay, Kerguelen's Island {Eaton). 



Order NEMERTINEA. 



Suborder A no PL a. 



Family Lineidse. 



Genus LiNEUS, Sowerby. 



Linens corrugatus^ n. sp. 



Body (in spirit) flattened, rather abruptly pointed anteriorly, 

 and more gradually posteriorly. The oesophageal region is 

 marked externally by a series of prominent and somewhat 

 regular rugae, which sweep from the mouth dorsally and 

 ventrally ; so that the dorsal view recalls that observed in 

 Arion ater. 



