PLATE CXIX. 



Fig. 



1. Edge of the dorsal collar of Melinna elisabethse, Mcintosh, x 40. 



2. Edge of dorsal collar of Melinna palmata, Grube. X 40. 



""3. Ventro -lateral view of Amphitrite gramlandica, Malmgren (P). " Porcupine," 1869. 

 ^ Enlarged. , 



4. Lateral view of Amphitrite fig ulus, Daly ell. St. Andrews. Enlarged. (Vide p. 117.) 



5. Lateral aspect of Loimia montagui, from Plymouth. Enlarged. 



6. Nicolea venustula, Montagu; deep-water variety, with long branchial pedicles, and 



finely branched tips. " Porcupine," 1869. Enlarged. 



7. Tube of Terebella B, with long hair-like processes. " Porcupine," 1870, 690 fathoms. 



8. Lateral view of the anterior region of Lanice cohchilega, Pallas, Lochmaddy. 



Enlarged. 

 8a. Dissection of a spirit-preparation from the dorsum to show the ventral glandular 



layer, a, bifid tip of oesophageal pouch; b, glandular ventral wall; c, nephridia; 



e, branchial vessels; /, oesophageal pouch or cascum; g, stomach; h, glandular 



wall of canal; i and in, intestine; k 9 vessels on intestine; o, blood-vessel; 



p, septum. 

 8 b. Tube with fan-like anterior end. Drawn by the Rev. J. M. Anderson. Enlarged. 



8 c and 8 c'. Two fans pertaining to other tubes of the same species from St. Andrews. 



Natural size. 

 8d. Isolated grains on a transparent tube of the same form. 



9. Lateral view of anterior end of Pista cristata, 0. F. Miiller. Enlarged. 



9 a. Valvular end of tube. Enlarged. 



10. Tail of fragmentary form from Guernsey, with hooks resembling Artacama. 

 11 and 11a. Tips of tubes of Potamilla reniformis, O. F. Miiller and Leuckart, showing 

 elastic coil at ends. Drawn by Mr. Arnold T. Watson. 



