PLATE CXII. 



FlGr. 



1. Sabellaria spinulosa, Leuckart, from the dorsal surface. Enlarged. 

 1 a. Ventral surface of a more brightly coloured example. Enlarged. 

 1 b. Ventral view showing the mouth and building organ. Enlarged. 

 1 c. Lateral view of the same. Enlarged. 



2. Lagis Koreni, Malmgren, from life. Enlarged. 



3. Ampharete acutifrons, Grube (after Fauvel). Enlarged. 



4. Sabellaria alveolata, L. 5 from the dorsum. Enlarged. 

 4 a. The same from the ventral surface. Enlarged. 



5. Nicolea venustula, Montagu, male, no branchise. Enlarged. 



6. Dasychone argus, Sars, from life, only to indicate the coloration. Enlarged. 



7. Anterior end of Polydora flava, Claparede. Enlarged. See vol. iii, pt. i, p. 205 

 7 a and 7 b. Tail of the foregoing. Enlarged. 



