ON NEREIS SUCCINEA AND PERRIEBI. 



215 



NOTE XIX. 



ON THE SUPPOSED IDENTITY OF 

 NEREIS (NEANTHES) SUCCINEA LEUCK. 

 AND N. PERRIERI ST. JOS. 



BY 



Dr. R. Horst. 



Examining a collection of Annelida from the Zuiderzee 

 I met with several individuals of a iVgm's-species, that I 

 think can only be N. succinea Leuck. Yet this worm is a 

 somewhat mysterious species, first described by Leuckart in 

 his „Verzeichniss der zur Fauna Helgoland's gehörenden 

 wirbellosen Seethiere" l ) and, though this author stated that it 

 was very common at Cuxhaven, it appears afterwards only 

 to have been collected again near Norderney by Dr. Metzger 2 ). 

 At least in Michaelsen's ,,Polychaetenfauna der deutschen 

 Meere" 3 ) it is not mentioned in the „Tabelle der unter- 

 suchten Polychaeten" and the only locality, quoted by him, 

 is Helgoland. The detailed description of N. succinea, pu- 

 blished by Ehlers in his Borstenwürmer 4 ), was based on 

 Leuckart's original specimens and those of Dr. Metzger. I 

 was therefore very glad that Prof. Eblers would give me 

 the opportunity to examine one of the specimens of his 

 Museum and I am very much obliged to him for this 



1) Frey und Leuckart, Beitrage zur Kenntniss Wirbclloser Thiere, 1847, p. 154, 

 pi. IT, figs. 9 and 11. 



2) Ehlers, die Borstenwürmer, p. 572. 



3) Wissensch. Meeresunters. der Commission zur wiss. Uniers. der deutschen 

 Meere, Neue Folge, Bd. II, 1897. 



4) loc. cit. p. 570, pi. XXII, figs. 18—22. 



.Notes from the Leyden Museum, "Vol. XXX. 



