216 ^ DR. baird's conteibuttons towards a 



- Amphinoma;, Savigny, Lamarck. 

 Amphinomiens, Audouin Sf M.-Edwards. 

 Amphinomacea, Kinbery, Cams, Van der Hoeven. 

 Amphinomidse, Gosse, Ann. Sf Mag. Nat. Hist. 1853. 



The animals belonging to this family possess a fleshy-looking 

 caruncle or crest on the back of the buccal or cephalic segment, 

 which is rounded. Branchiae occur on almost all the segments of 

 the body, are double, but do not alternate with cirri, as in the 

 Aphroditidce. The setiferous tubercles composing the feet are 

 arranged in two rows, and are more or less widely apart. Tlie 

 eyes are four in number. The antennae, as in the Aphroditidce, 

 have usually been described as five in number — one median, two 

 internal, and two external, rollowing Kinberg's terminology, in 

 accordance with what I have said in the case of the Aphroditidce, 

 the median single antenna will be designated as the tentacle, the 

 internal pair as antenncs, and the external pair aB palpi. Some- 

 times iTluphrosyne) the antennae and palpi are wanting. 



In the ' Ofversigt af Kongl. Vetenskaps-Akademiens Forhand- 

 lingfu",' 1857, and afterwards in the ' Tregatten Eugenics Eesa,' 

 Kinberg (including the genus Euphrosyne, which he places in a 

 family by itself) enumerates seven genera ; to this number he adds, 

 in the ' Ofv. Kong. Vetens.-Akad.' 1860, another, which, however, 

 may be doubtful. Ehlers adopts the seven genera of Kinberg ; but 

 Quatrefages limits the number to four, though he describes one 

 which does not enter into Kinberg's enumeration. Grube, in his 

 'Eamilien der Anneliden,' describes four, the same number as 

 Quatrefages, but introduces one to which that author does not 

 give a generic place. Audouin and M. -Edwards only admit three. 



Grenus I. Amphinome. 



Aphrodita, sp., Pallas, 



Terebella, sp., Gmelin. 



Amphinome, Bruguikre, 1789; Cuvier, M.-Edwards, Rhgne Anim. ed. 

 Crochardj Grube, Schmarda, Kinberg, Cams, Van der Hoeven, Qua- 

 trefages. 



Amphinoma, Blainville, 1828?; Audouin Sf M.-Edwards, Littoral de la 

 France. 



Pleione, Savigny, 1828?; Cuvier, Lamarck, Stannius, Guerin. 



Body long, with the segments rectangular ; cephalic lobe small, 

 caruncle small, heart-shaped ; antennae and palpi rising from first 

 segment of body ; branchiae commencing on 3rd or 4th segment 



