1 8 I'RATT, Polydu2ta from the Falkland Islands. 



EXPLANATION OF PLATE 4. 

 Figures showing comparison of Goniada fiorvegica with the 

 form from the Falkland Islands. 



Fi<^. I. G. norvegica, showing lateral V-shaped teeth in proboscis. 

 Cam. luc, magnified 15 times. 



Fi«^. 2. G. norvegica x^r./alklaiidicn, do. do. 



Cam. luc, mag. 65 times. 



Fig. 3. G. norvegica, jointed neuropodial bristle, showing inser- 

 tion of anterior portion into socket. Cam. luc, mag. 

 300 times. 



Fig. 4. G. norvegica var. falklandica, do. do. 



Cam. luc, mag. 300 times. 



Fig. 5. G. norvegica, showing disposition of ring of teeth (opened 

 out to show dorsal and ventral surfaces) at the tip 

 of proboscis. Cam. luc, mag. i8| times. M = 

 Macrognatha. 



Fig. 6. G. norvegica \2a. falklandica, do. do. 



Cam. luc, mag. iS^ times. 



Comparison of Parapodia of Goniada norvegica with those 

 of tropical species from West Africa. 



Anterior parapodia. 



Goniada norvegica var. falklandica. About 29th segt. 



mag. 14 times. 

 G. norvegica (from Arwidsson). 29th segt. mag. 13^ 



times. 

 G. hupferi (from Arwidsson). 8th segt. mag. 33^ times. 

 G. hup/eri {^xom Arwidsson). 2Sth segt. mag. 33^ times. 

 G. co?igoensis (from Arwidsson). 28th segt. mag. 24 



times. 

 Fig. 12. G. midtidentata (from Arwidsson). 17th segt. mag. 



3ii times. 



Median parapodia. 



Fig. 13. G. norvegica ydiX. falklatidica. About looth segt. mag, 

 7 times. 



Fig. 14. G. norvegica (from Arwidsson). 122nd segt. mag. 

 7 times. 



Fig. 15. G. hipferi [{xon\ Arwidsson). 71st segt. mag. 23 times. 



Fig. 16. O. multidentata (from Arwidsson). 80th segt. mag. 

 2\\ times. 



