SUPPLEMENT. 191 



P. 36. T. PAPYKACEA. F. Italy. E. Christiansund (Sars) 

 Yar. villosiuscula. F. Norway. 



P. 38. T. PUBESCENS. F. Italy. E. Atlantic coasts of 

 France, Med., and Adr. ! 



P. 39. T. CONVEXA. F. Monte Mario (Eigacci) ! E. Me- 

 diterranean, from Mahon to Sicily ! T. Mamvignce of Aradas 

 and Calcara. 



P. 41. T. DISTORTA. F. Belgium (Nyst). E. Bay of Bis- 

 cay, Med., and Adr. ! 



P. 43, 1. 3 from top, for " Fleurian" r. " Fleuriau"; and 

 1. 7, for " Ee'cluz " r. " Fleuriau". 



P. 45. POROMYA GRANULATA. The Minch, 45-60f. (J.G. J.); 

 N. of Hebr., 170 f. (C. and T.). F. N.W. Germany (Leunis,/. 

 Philippi). E. Loffoden L, 300 f. (Sars) ; Dalmatia (Brusina) ! 



P. 48. NEJSKA ABBREVIATA. 



BODY whitish, with minute flake-white specks : mantle 

 closed in front, open on the posterior side for the passage of 

 the foot and admission of water to the gills, as well as on the 

 anterior side, where it is folded into the tubular processes ; it 

 has an inner and narrow border of yellow; outside edges 

 fringed with minute points ; the lips pout on the posterior 

 side : tubes unequal in size and length ; the lower or incurrent 

 tube is large and wide, and forms a short cylinder (like a mor- 

 tar); its orifice is bent inwards and has a ciliated edge ; this 

 orifice is sometimes encircled by a ring of an orange colour ; 

 excurrent tube conical, with a contracted and small orifice ; 

 the tubular sheath has from 6 to 8 long thread-like and finely 

 granulated cirri, with bell-mouthed extremities : foot dibble- 

 shaped, narrow, and extensile. Jerks about by means of a 

 systolic and diastolic action of the tubes. 



E. Loffoden I., 300 f. (Sars); Loire-Infe'rieure (Cailliaud); 

 Naples, 60 f. (Acton and Stefanis) !; Sicily (Benoit) ! 



P. 49. N. COSTELLATA. N. of Hebr., 189 and 530 f. (C. 

 and T.). F. Monte Mario (Conti) ! E. G. Gascony, 60-80 f. 

 (De Folin); Med. and Adr. ! 



P. 51. N. ROSTRATA. F. N.W. Germany (Bronn and 

 others); Monte Mario (Eigacci)! E. Loffoden L, 300 f. (Sars); 

 Med. and Adr.! 



P. 53. N. CITSPIDATA. N. of Hebr., 500 and 550 f. (C. 



