FLUSTRA PAPYRACEA. 119 



rather narrow, expanded at the summit, truncate or 

 slightly rounded. Zocecia oblong, with a single short 

 spine at each side above. Ooecia small, galeriform, 

 somewhat produced. Avicularia none (?) . 

 Height of tufts about 1 inch. 



HABITAT. On stones, shells, &c., generally in very 

 moderate depths. 



LOCALITIES. South Devon, not uncommon ; Salcombe 

 Bay ; Plymouth ; Torbay ; Ilfracombe, 8-10 fathoms 

 (T. H.) : Cornwall, very rare, on shell from deep water 

 8 leagues south of the Deadman (Couch) : Tenby (F. 

 Walker) : Hastings (Ellis) : Brighton (Lister) : east and 

 south of Ireland (W. T. & Allman). 



GEOGRAPHICAL DISTRIBUTION. Roscoff, very rare 

 (Joliet) : Charente-Inferieure, pretty common (Beltre- 

 mieux) : west coast of France (Fischer) *. 



This pretty species is distinguished by its small size, its 

 bushy habit of growth, and the delicacy of its texture. 

 The zoarium has a varnished and glistening appearance ; 

 the segments into which the fronds divide are short and 

 subtruncate. Avicularia seem to be altogether wanting. 

 It is limited in its range, and has probably not occurred 

 in the north. 



The oo3cium is placed very far back, and projects into 

 the cell above it, being completely roofed over by its 

 front wall. The arch across the orifice is slightly raised ; 

 but the rest of the ovicell is completely immersed, and 



* Kirchcnpauer records this form from Hougesund, and Liitken from 

 Greenland; but these localities are extremely doubtful. Kirchenpauer's 

 species is probably not identical with our F. papyracta ; for he remarks that 

 it had not it thin papyraceous character. And as we hare no other record 

 of the occurrence of the present species in the north, and especially as it 

 does not appear amongst the 'Valorous' dredging*, or those of the North- 

 German Polar Expedition, I venture to think that Lutkeu must bo in error 

 in assigning it to Greenland. 



