I 



ADDENDA AND CORRIGENDA. 347 



Page 271, Serpula (Vermilia) conica, after specific description add 

 Plate XX. %. 1 (operculum) ; and Page 272, after (a) Berwick Bay, 

 Dr. Johnston, add (b-d) Polperro, Cornwall, Laughrin ; (e) Coast of 

 Northumberland (tubes) ; (/) Bantry Bay (tubes) ; (g) Scarborough 

 (tubes only). 



Page 272, Serpula (Pomatoceros) armata, after specific description 

 add Plate XX. fig. 2 (operculum) ; and after (a) Berwick Bay, Dr. 

 Johnston, add (6) Hastings ; (c, d) Polperro, Cornwall, Laughrin ; 

 {&-i) Falmouth (tubes only), W. P. Cocks ; (j) Coast of Northum- 

 berland (tubes). 



Page 272, Serpula (Pomatoceros) Dysteri, after specific description 

 add Plate XX. fig. 3 (operculum) ; and Page 273, after (a) Berwick 

 Bay, Dr. Johnston, add (6 ? c ?) Polperro, Cornwall, Laughrin. 



Page 273, after Sp. 7. Serpula Dysteri, add 

 Sp. 8. Serpula (Placostegus) tricuspidata. 



Serpula tricuspidata, Sowerhy, Tankerville Cat. of Shells, Appendix i. 



no. 24 (1825). 

 Serpula crystallina, Scacchi, Catal. Conch. Reg. Neapol. (1836). 

 Placostegus crystallinus, Philippi, Wiegm. Archiv, i. 192. t. 6. f. D 



(1844). Gruhe, Famil. der Annelid, p. 91, 



Branchial filaments about 9 on each side ; base of the operculum 

 without a process; tube three-cornered, with 3 keels projecting 

 acutely at the mouth, dorsal keel toothed. — Gruhe. 

 Hah. Coasts of Scotland and Ireland. 



{a) Cork (tubes only, adhering to a dead Pinna). 



(6) Shetland (tubes adhering to stones), R. M^ Andrew. 



(c) Shetland (tubes on stones), Damon's Collection. 



(d) Isle, of Skye (a single unattached tube). 



Page 273, for Ditrupa subulata read Ditrupa arietina ; and to list 

 of synonyms add — 



Dentalium arietinum, Muller, Zool. Dan. Prodr. (1776). 



Dentalium subulatum, Deshayes, Monogr. of Dental, in Mem. du Mtts. 



d'Hist. Nat. (1825). Zool Journ. iv. 194' (1829). 

 Ditrupa subulata, Berkeley, Zool. Journ. v. (1835). 

 Serpula libera, Sars, Beskrivelser 8fc. p. 52. tab. 12. f. 32 a-e (1835). 



Gruhe, Famil. der Annelid. 91. 

 Placostegus (liberus), Philippi, Wiegm. Archiv (1844). 

 Ditrupa arietina, Sars, Reise (1849). 



A.fter Hah. add (a) Shetland (tubes and animals), J. G. Jeffreys ; 

 (h) Shetland (tubes only), J. G. Jeffreys ; (c) Shetland (tubes only), 

 Rev. A. Merle Norman. 



Page 274, Eilograna implexa, after (a) Devonshire add (h) Scar- 

 borough (mass of dry tubes) ; (c) Coast of Northumberland (dry tubes 

 in a mass) ; (d) Falmouth (mass of dry tubes), W. P. Cocks ; (e) 

 British coast (dry tubes creeping singly, inside of a dead Pecten). 



