292 PLVMUJLARIID^E. 



phyllum attains a height of from 6 to 12 inches, and in 

 luxuriant specimens 18. 



Hub. Rare, chiefly from deep water. Cornwall (not 

 common) (C. W. P.): Brixham, Torbay (occasionally 

 amongst the trawl-refuse) (T. H.) : Plymouth Sound 

 (Bellamy): Dartmouth (G. Busk): off Jersey, (Lewes) : 

 Mersey (Dr. Collingwood) : Embleton Bay, a single speci- 

 men (Dr. Embleton): Estuary of the Clyde (T. H.): 

 LamlashBay (D.L.): Aberdeen (Macgillivray) : LochFyne; 

 Shetland (A. M. N.): Peterhead, one specimen (C. W. P.): 

 Isle of Man (E. Forbes): Dublin, from very deep water 

 (Ellis): Belfast Lough (M'Calla): Youghal (Miss Ball). 



[The Mediterranean (Pallas) : Massachusetts Bay (Agas- 

 siz): Mingan Islands, Gulf of St. Lawrence (teste A. 

 Agassiz).] 



Without corbulse. 



4. A. PENNATULA, Ellis and Solander. 



SERTULARIA PENNATULA, Ellis Sf Soland. 56, pi. vii. figs. 1, 2. 



AGLAOPIIEXIA PENNATULA, Lamx. Cor. flex. 168; Expos. Meth. ii. pi. vii. 



figs. 1,2; Agassiz, TS. H. U. S. iv. 358. 

 PLUMULARIA PENNATULA, LamJc. An. s. Vert. (2nd ed.) ii. 165 ; Johnst. Br. 



Zooph. 94, pi. xxii. figs. 1, 2. 



Plate LXIII. fig. 3. 



SHOOTS plume-like, slender, very graceful; STEM straight, 

 pinnate for about two-thirds of its length, naked below, 

 divided into short internodes, each of which bears a pair 

 of pinnse; pinnae subalternate, crowded, curved, and 

 springing from the anterior aspect of the stem ; HYDRO- 

 THEC<E small, cup-shaped, aperture wide, the margin 

 sinuated, ivith a minute denticle on each side, a long 

 incurved spine springing from the base of each culycle 

 in front, rising considerably above the orifice and bend- 



