170 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Lanice conchilega ....\ X x x 



TJiehjius cincinnatus x 



Nicolea vemistula x 



Aiiqjharete gruhei.... x 



Pectin, auricnma x 



„ helgica x 



SaheUaria alveolata . 

 SabeVaria spinulosa x 



Sahella p avonia i 



Dasychove herdmani 

 Amphicora fahricia. . , 

 Filigrana implexa. . . . 

 Serpula vermicularis x 



,, reversa x 



,, trlqueter ....\ 

 Spirorhis horealis — ' 

 lucidus ..., X 



E, Cli. 



UK. 



Sh, E, Ch. 



E, WS. 



UK. 



E, Ch. 



E, Ch. 



E,Sh,ChWS 



E, Ch,'wS, 



E, Ch. 



UK. 



E, Cli, Ir. 



E, Ch. 



E, Ch. 



E. 



Cattegat, Belgium, 



Med, and Madeira. 



US,Gr,Sp,NZ,ScMed 



(Ir, Se, ]\led. 



Cr, Sp, NZ, Sc. 



Sc, Med. 



Sc. 



Med. 



Sc. 



US, Sc. 



Gr, Sc, 

 US, So. 

 Sc, La Rochelle 



Sc, Med. 

 US, Gr, Sc. 

 US, Gr, NZ. 



Explanation of Plates. 



Plate XIII. 



Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 



Fig. 



Fig. 7 



Fig. 

 Fig. 

 Fig. 



1. ^oto-podml ^eta> o( Poly uoi'jyropinqua, X 250. 



2. ,, ,, ,, imhricata, X 250. 



3. ,, „ „ i77ipar, X 250. 



4. ,, ,, ,, extenuata, X 250. 



5. ,, ,, ,,haU(eti,YSiY.hij(EncB,X 250. 

 (These figures show the minute but constant rela- 

 tive differences in the degree of serration exhibited 

 by the bristles of the respective species.) 



6. Poljjnor impar. Portion of scale showing single 

 large pear-shaped papilla, X 130. 

 PohjuoP propinqua . One of the large sub-globular 

 margin processes, X 11)0. 



8. Polij)wr extenuata. Entire scale, X 44. 



9. Polynoi' projnnqiia. Parapodium, X 20. 



10. Eunice harassii. Parapodium and branchia 

 from the 21st setigerous somite, X 20, 



