SERTULARIADJ5. 471 



Buchanness upon which were growing S. fallax, S. rosacea, S. 

 tamarisca, &c. 



S. ABIETINA with ripe ova in May 1845, off Southwold, and Huntly 

 Foot, forty fms. Noss head, Copinsha, &c. 



SERTULARIA FILICULA with scattered ovaries off Tynemouth, in 

 May, 1845 do. off Buchanness in forty fms. on shingle, off 

 Copinsha, &c. 



SERTULARIA OPERCULATA almost always on stems of Laminaria 

 dig. Suffolk, Orkney, &c. 



SERTULARIA ARGENTEA gregarious upon stems of L. digitata. 

 Suffolk, Yorkshire, &c. 



SERTULARIA CUPRESSINA generally solitary upon shells and stones. 

 The stems are sometimes two feet long and nearly bare of 

 pinnae, from which other long straggling polypidoms spring 

 out. The embryo is a disk with a central nucleus escaping 

 in Dec. 1845, Est. of Thames. F. of Forth, Orkney Isds. &c. 



THUIARIA THUIA not been found in fruit in March, April, or June 

 off Staples, Yorkshire Coast, Inchkeith, Buchanness, Orkney 

 Isds, &c. 



THUIARIA ARTICULATA taken from a muddy bottom in forty fms. in 

 April 1845, off the Tees. 



ANTENNULARIA ANTENNINA Suffolk, Yorkshire, Buchanness, Orkney 

 Isds, &c. 



ANTENNULARIA RAMOSA this species has the lateral trumpets with 

 the preceding with ova in seven fms. Kirkwall, Orkney Isds., 

 July 1846. 



PLUMULARIA FALCATA generally distributed. It is worthy of re- 

 mark, that on a voyage from Thames to Scotland, in March 

 1845, not one specimen was taken with ova, while all those 

 in the Firth of Forth, were covered with them. Earliest in 

 shallow water ? 



P. CHISTATA on Halidrys siliquosa (has it ever been found other- 

 wise?) with ova in August 1845. Westra, Orkney Isds. 



P. PINNATA Yorkshire coast to Orkney Isds. It has never been 

 found in fruit but my dredging has been confined principally 

 to spring months. Is not the spine beneath the cell, a broad, 

 transparent cellule? 



P. SETACEA associated with the preceding Yorkshire coast thirty- 

 five fms. Aberdeen do. Copinsha. Fifteen fms. Stronza 

 Firth. Constantly with ova in May and June. 

 P. CATHERINA Yorkshire coast thirty-five fms. Aberdeenshire do. 



