THE ANNALS 



MAGAZINE OF NATURAL HISTORY. 



[EIGHTH SERIES.] 

 No. 41. MAY 1911. 



LII. — On the Structure of Magelona. By Pi'of. M'Intosii, 

 F.R.S., Gatty ]Marine Laboratory, St. Andrews^, 



In his observations on the Annelids from the IsLand of 

 St. Catlierine, off the coast of Brazil, Dr. Fritz Miiller, in 

 1858, briefly mentions f, under the name of Magelona papilli- 

 cornis, a remarkable form with a flattened snout, two long 

 tentacles furnished with cylindrical papillae, corpusculated 

 blood, and other features which appear to agree in the closest 

 manner with the British annelid which forms the subject of 

 the following remarks. The type was next referred to by 

 Dr. Edouard Claparede in his account J of a larval form 

 which he found at St. Vaast la Hougue, on the west coast of 

 France. The same singular species, however, as that indi- 

 cated by the first-mentioned author was probably originally 

 discriminated by the late Dr. George Johnston, of Berwick §, 

 but as his description was not published until 1865 || — long 

 after his death — the name (Maa mirabilis) he gave it lapses. 

 Ill Britain it has occurred abundantly at St. Andrews, and 

 also^ as Dr. Carrington first showed ^, at Southport; indeed, 



* Translated from the Zeitsch. f. wiss. Zool. Bd. xxxi. p. 401 (1878). 



t " Einiges iiber die Annelidenfauiia der In.sel Santa Catharina an der 

 Brasilianischen Kiiste,'' von Dr. Fr. Miiller. (Aiis einer brietiiclien Mit- 

 theilung- an Prof. Grube.) Hierzii Taf. vi. & vii. Archiv fiir Naturges. 

 1858, p. 211. 



I ' Beobachtungen iiber Anat. n. Entwicklung?gescliichte wirb. Thiere 

 an der Kiiste von Normandie ange?tellt,' Leipzig, 1863. 



§ From preparations forwarded by the distinguished botanist, Ur. 

 Greville. 



II ' British Museum Catalogue of Worms,' p. 278. 



^ Proceed. Lit. & Philos. Soc. Manchester, iv, 1865, p. 185. 



Ann cf- il%. X Hist. Ser. 8. Vol. vii. 28 



