1917- ScHARFF — Advances in I Hsh Marine Zoology. iii 



are described by Mr. Southern/ of which eleven were 

 hitherto unknown, from the British and Irish marine area. 

 Six of these are new to science. One of the most noteworthy 

 facts brought to Hght by Mr. Southern is the discover}^ 

 of a deep-water Physcosoma off the west coast of Ireland. 

 The whole of this valuable collection, including the type 

 specimens, has been deposited in the National Museum 

 of Ireland. 



Very distinct from the last group are the active Chaeto- 

 gnatha,^ which are free-swimming worm-like organisms. 

 They are difficult to determine, and little attention had 

 been given to them in Ireland hitherto. They had to be 

 sent to a German specialist who describes twelve species. 



The Bristle-worms (Polychaeta) form still another group 

 of worms. There are three reports on different sections 

 of this large and varied group. Dr. Ashworth'^ deals with 

 the two families Arenicolidae and Scalibregmidae. The 

 first of these includes our well-known lug-worm. No 

 member of the other family had previously been dis- 

 covered in Irish waters. Dr. Ash worth records the two 

 species Scalihregnia inflatiim and Lipohranchias Jeffreysii. 



Mr. Southern^ reports on the pelagic Phyllodocidae. No 

 species of the sub-family referred to had hitherto been 

 recorded from the British and Irish marine area, so that 

 all are additions to our fauna. Several are new to science. 



Another section of pelagic worms is included in the 

 sub-family Alciopinae and in the families Tomopteridae 

 and Typhloscolecidae.'^ All these live in the warm and 

 saline waters of the European branch of the Gulf Stream. 

 Mr. Southern describes twelve species, of which all but 

 two are new to the British and Irish marine area. 



1 Southern, R. — Gephyrea of the Coasts of Ireland. Fishevies, Ireland, 

 Set. Invest., 1912, iii. [1913]. 



2 Ritter-Zahony, R. von. — Chaetognatha from the Coasts of Ireland. 

 Fisheries, Ireland, Sci. Invest., 1910, iv. [1910]. 



3 AsHWORTH, J. H. — Polychaeta of the Coasts of Ireland. I. — Areni- 

 colidae and Scalibregmidae. Fisheries, Ireland, Sci. Invest., 1908, ii. 

 [1909]. 



* Southern, R.— Polychaeta of the Coasts of Ireland. II.— Pelagic 

 Phyllodocidae. Fisheries, Ireland, Sci. Invest., 1908, iii. [1909J. 



^ Southern, R. — Polychaeta of the Coasts of Ireland. III. — The 

 Alciopinae, Tomopteridae and Typhloscolecidae. Fisheries, Ireland, Sci. 

 Invest., 1910, iii. [igii]. 



