ANATOMY AND CLASSIFICATION OF THE ARENICOLID.E. 423 



species taken at Naliant. Altliough labelled Arenicola 

 natalis^ Gir., and A. areuata, tliese American specimens all 

 belong to the common European form. 



Our attempts to obtain living specimens of larval or post- 

 larval examples of the lugworm have so far been unsuccess- 

 ful, but Professor Benham has presented us with a post-larval 

 stage, 4" 5 mm. long, captured at Plymouth, and Mr. E,. L. 

 Ascroft has given us two specimens taken in the tow-net at 

 high water near Lytham, on the Lancashire coast. 



(2) Arenicola cristata, Stimps (A. antillensis, Liit- 

 ken.) — Three specimens from Naples ; a large specimen from 

 the Harvard Museum, but with no indication of its place of 

 capture ; a smaller one from the same museum, collected at 

 Captiva Key, Florida; and another, 47"5 mm. long, from 

 Bluefields, Jamaica. 



(3) Arenicola Claparedii, Levinsen. — A considerable 

 number of specimens, full-grown and immature, from Naples; 

 and four specimens of what we consider to be this species 

 from the Harvard Museum, collected by Professor A. Agassiz 

 at Crescent City, California. 



(4) Arenicola Grrubii, Claparede. — We have collected 

 this form in abundance at Plymouth, and at Port Erin and 

 Port St. Mary in the Isle of Man. Mr. Hornell has supplied 

 us with specimens from Jersey, M. Mesnil has kindly sent a 

 few from St. Martin, and we have also received specimens 

 from Naples. A specimen was taken by one of us at Port 

 Appin, near Oban, in Loch Liunhe, and others at Valencia 

 in the south-west of Ireland. 



(5) Arenicola ecaudata, Johnston. — Many adults from 

 Port St. Mai-y, Plymouth, Valencia, and Jersey; a few and three 

 post-larval stages from Port Erin (August, 1896). Dr. S. F. 

 Harmer submitted a few specimens collected in the north of 

 Ireland. They differed slightly from more southern specimens, 

 but agreed closely with Rathke's description of his A. Boeckii, 

 which, however, does not rank as a distinct species. 



