ANNULATA. 245 



Tubercles of the feet similar in all the segments, supplied with 

 a ventral cirrus only. 



Comp. JOHNSTON, Ann. of Nat. Hist. xvi. 1845, pp. 8 10, Spinther 

 oniscoidcs, PI. n. figs. 7 14. 



Sigalion AUD., EDW. Body depressed, elongate, with numerous 

 segments. Dorsal squamae together with dorsal cirrus in most of 

 the segments; the anterior segments that are without squamae alter- 

 nating with squamiferous segments. 



Sp. Sigalion MatMldce AUD. and EDW. Ann. des Sc. nat. Tom. xxvu. 

 pp. 441443, PI. ix. figs, i 10 ; Sigalion boa JOHNSTON, Ann. of Nat. 

 Hist. ii. pp. 439 441, PI. xxin. figs. 6 15, (probably the same species as 

 Sigalion Idunce RATHKE, Beitr. zur Fauna Norweg. pp. 150 155, Tab. ix. 

 figs, i 8 ; comp. also Sigalion Estellce GUKR. Magas. de Zool. 1833, Ann6l. 

 PL 3). 



Acdetes AUD. and EDW. Body elongate, with numerous seg- 

 ments. Branchial tubercles at the base of the pediform tubercles 

 in all of them, dorsal squamae large, the squamiferous segments, 

 without dorsal cirrus, alternating with segments supplied with dorsal 

 cirrus. A coriaceous tube longer than the body concealing the 

 worm. 



Sp. Acoetes Pled AUD. and EDW. Ann. des Sc. nat. xxvu. p. 437, PL x. 

 figs. 714. 



Polyodontes KENIERI, AUD. and EDW. (Phyllodoce EANZANI). 

 Head small, with three tentacles and two pedunculate eyes. Dorsal 

 cirri in the segments destitute of elytra, which alternate with squa- 

 miferous segments; ventral cirri short, subulate in all the segments; 

 distinct branchiae none. Proboscis with two subulate cirri and warty 

 margin, with four large denticulate jaws. 



Polyodontes Ranzanii, Phyllodoce inaxillosa RANZANI, Opuscoli scientifici, 

 Bologna, 1817, Tom. i. pp. 105 109, Tab. IV. figs. 2 9, Mediterranean. 



Polynoe SAV. Body in some oblong or oval, in others slender, 

 elongate. Head with four eyes set on tubercles, and five, sometimes 

 four, tentacles. Jaws large, horny. Branchiae and dorsal cirri 

 in pediform tubercles destitute of squama, which alternate with 

 squamiferous feet. 



Sp. Polynoe squamata, Aphrodita squamata L., BASTEK, Natuurk. Uitsp. n. 

 Tab. vi. fig. v. PALLAS Miscell. Zool. p. 91, Tab. vn. fig. 14 ; Polynoe 

 Icevis, AUD. and EDW. Ann. des Sc. nat. xxvn. p. 421, PL ix. figs, n 19, 

 GUERIN, Iconogr. Annel. PL 9, figs. 4, &c. 



