from the North Sea atxd adjacent parts. 269 



much less, and in liaving a move decided decrease in botU 

 posterior lamella?. This annelid, according to the Mono- 

 graph, is merely a younger stage in the growth of N. hom- 

 heryii. 



From Heinen's Karte 1 N. homhergii is seen to have a 

 wide distribution, varying from 53° 52' to 59° 9' N., and 

 1° 21' to almost 8° E. From the ' Goldseeker ' collection, 

 however, this annelid is confined to the neighbourhood of tlie 

 Shetland Isles. 



Nephthys incisa, Malmgren, 1865. 



Haul 8215 alone contained this annelid, when eight speci- 

 mens were obtained. The animals were small, the largest 

 numbering about 50 segments. The haul was made at 

 Station i^, 61° 35' N., 0° 21'E., but the depth at which they 

 were obtained is not given. In the ' Porcupine ' Expedition, 

 1869, this aiuielid was found from 6—80 fathoms. In one 

 the proboscis was extruded and showed twenty-two rows of 

 minute papillae; but the short median cirrus, which, according 

 to Malmgren, occurs in the smooth distal region both dorsally 

 and ventrally, was not seen. On the branchia3 were struc- 

 tures res-embbng minute Loxosomce, but the parasites were 

 too contracted to make out their structure properly. No 

 .specimen was mature, and the gut showed sand and sponge- 

 spicules. 



There is no mention of this annelid in the ' Challenger ' 

 Reports nor in 'ErrantiatePolychseta of Japan,' but Heiiien 

 obtained several at various stations in the German North 

 h?ta. The most northerly point at which he obtained this 

 annelid was 57° 52' N., 4° 52' E. ; but the 'Goldseeker' 

 dredged it at Station 8, 61° 35' N., 0° 20' E. 



Ne]>1dhijs ciliala, O. F. MuUer, 1789. 



This annelid, from various reports, is common on muddy 

 ground or in sandy mud, but only one specimen is present in 

 the collection. O. F. Miiller procured it in the first instance 

 from the Faioe Islands, but it stretches to Greenland and to 

 the eastern Canadian waters, as well as to America. .Malm- 

 gren records it from Spitzbergen, Scandinavia, and Iceland ; 

 Elilers, both shores of the Atlantic ; and Theel gives Kara 

 Sea and Nova Zenibla. It is not mentioned in the 'Chal- 

 lenger' Reports, but Prof. Izuka notes it as occurring in 

 Japanese waters. Heinen, too, has no record of it in his 

 North Sea Collection, but remarks, " Allc mir vorliegenden 

 Tiere stamrnten aus Ostsee und Kattegat." 



