monoghaph or the amphinomacea. 217 



of body ; arborescent, branches filiform ; some of the setcd of the 

 dorsal feet subulate, serrate, others linear, smooth ; setos of the ven- 

 tral feet hooked, thicTc, short, few in number. Anus situated ou the 

 dorsal side of the lower extremity. 



There are no species belonging to this genus found in Great 

 Britain, though one, Amphinome vagans, has been described by 

 Savigny as found by the late Dr. Leach on the coast of England. 

 The locality of this species, however, was doubted by Savigny 

 himself at a later period, and the specimen was suspected by him 

 to have been brought to Dr. Leach from the Atlantic Ocean 

 amongst some fuci. This has now, on the authority of Kinberg, 

 been satisfactorily established, specimens having been brought by 

 Dr. Schlor from the South Atlantic. Quatrefages, in his late work 

 on the Annelides, enumerates twenty-seven species, including 

 three which belong to the genus Notopygos of Grube, and which 

 are distributed amongst five of the genera of Kinberg. To this 

 list one or two new species have now to be added. 



Sp. 1. Amphinome eostbata. (Plate IV. figs. 1 a, h^ 

 Aphrodita rostrata, Pallas, Miscell. Zoolog. 100, tab. 8. f. 14-18, 1766. 

 Terebella rostrata, Gmelin, Linn. Syst. Nat. 3113. 

 Amphinome tetraedra, Bruguihe, Encyclop. Method, art. Amphinomci 

 Atlas, tab. 61. f. 8-12 (copied from Pallas)', Cuvier, Diet. Sci Nat. 

 art. Araphinome. 

 Amphinoraa tetraedra, Blainville, Diet. Sc. Nat. art. Vers, p. 450 ; 

 Audouin Sf M.-Edwards, Ann. Sc. Nat. tom. xxviii. p. 197, Hist.. Nut. 

 Littoral de la France, ii. p. 123. 

 Pleione tetraedra, Savigny, Syst. des Annilid. 60 ; Lamarck, An. s. Vert. 

 1st edit. V. 330, 2nd edit. v. h7'2; M.-Edwards, Cuv. Rhgn. Anim. ed. 

 Crochard, tab. 8 bis. fig. 1, la-l c. 

 Ampbinome rostrata, Grube, Famil. der Annelid. 40 and 122 ; Van der 

 Hoeven, Handbuch der Zoologie, i. 231, 1860 ; Cams, Handbuch der 

 Zoologie, ii. 435, 1863; Quatrefages, Hist. Nat. des Annelides, i. 393. 

 Hob. Indian Seas {Madras, Mus. JBrit.) ; Australia {Miis. Brit.) ; 

 Eio Janeiro, Kinberg. 



I have had figured the setae or bristles of the dorsal and ventral 

 row of feet (vide Plate I. fig. 1). The setae of the dorsal feet 

 (fig. 1 a) are considerably longer than those of the ventral row, 

 are very numerous, capillary, and terminate in a fine point. For 

 some distance below this point they are serrated on the margins. 

 The setae of the ventral feet (fig. 1 h) are strong, curved at the 

 apex, which is rather blunt, and below this are gradually enlarged. 

 They are horny-looking in structure and colour, are simple or not 



