DK. BATED ON SEVEBAL GENERA OF EUNICEA. 343 



L Sjjecies which do not possess uncini. ^='E\uxice restricted. 

 Sp. 1. Eunice apheoditois. 



Nereis aphroditois, Pallas, 1788. 



Terebella aphroditois, Gmelin, 1 789. 



Eunice gigantea, Cuvier, 1817?, Grube, Quatrefages, &c. 



Nereidonta aphroditois, Blainville. 



Leodoce gigantea, Savigny. 



There appears to be some confusion with regard to the synonymy 

 of this species. Quatrefages adopts the name of gigantea, and 

 quotes, as the type of it, the Nereis gigantea of Linna;u3. Eefer- 

 ring, however, to the ' Systema Naturae,' we find Linnaeus quoting, 

 as the type of his species, the Millepoda marina Amhoinensis of 

 Seba, ' Thesaurus,' tab. 81. fig. 7, which, as Savigny has already 

 shown, and which, as I have mentioned in my previous paper on 

 the Amphinomacea (vide ' Proceedings of Linnean Society ' for 

 1868, vol. X. p. 219), is in reality the AmpUnome carunculata of 

 'Pallas. 



Cuvier, in his first edition of the ' Eegne Animal,' named the 

 present species Eunice gigantea ; but Pallas had long anteriorly de- 

 scribed and figured it under the denomination of Nereis aphro- 

 ditois. Quatrefages describes a new species under the name of 

 Eunice JRousscei; but this I consider to be identical with the 

 aphroditois. He quotes Cuvier's gigantea for both ; and indeed it 

 would appear that his chief reason for making two species is the 

 difierence of their habitat, the one being a native of the Atlantic 

 Ocean and the "West Indies, whilst the other is from the Indian 

 Seas, Isle of France, &c. We have a variety of specimens of what 

 I consider to be the true aphroditois, from Australia and Van 

 Diemen's Land, so that in all probability this species is to be 

 found in various parts of the world. 



The head-lobes in all our specimens are four in number. Qua- 

 trefages says of his species E. gig antea= aphroditois, " Caput quasi 

 sex-lobatum." Savigny expressly says of his Leodoce gigantea, 

 " tete a quatre lobes." 



This is one of the longest of known Annelides, one specimen we 

 possess in the British-Museum collection being 41 inches or 

 nearly 3^ feet long. 



Hab. Van Diemen's Land, Freemantle, W. Australia, New 

 Holland, Mus. Brit. ; Indian Seas, Isle of France, (Quatrefages 

 {gigantea) ; Atlantic Ocean, "West Indies, Quatrefages (Bousscei). 



