PERIGON1MUS PALLIATUS. 93 



was free from this remarkable little zoophyte" (G. J. A.): 

 Ilfracombe, on stones (T. H.). 



2. P. SESSILIS, T. S. Wright. 



EUDENDRIUM SESSILE, Wright, Edinb. New Phil. Journ. (N. S.) vi. 90, pi. Hi. 



figs. 16, 17. 



ATRACTYLIS SESSILIS, Wright, Edinb. New Phil. Journ. (N. S.) ix. 109. 

 PEIUGONIMUS SESSILIS, Allman, Ann. N. H. for May 1864. 



Plate XVII. fig. 1. 



POLYPITES supported on a very short ringed stem, or sessile, 

 red or white, with 8 tentacles, sheathed up to the ten- 

 tacles in a delicate membranous tube ; GONOPHORES sessile, 

 borne on the creeping stolon, close to the polypites, and 

 often in pairs. 



GONOZOOID identical with that of the preceding species. 



Hab. On shells from deep water, Firth of Forth, and 

 on rocks about Granton (T. S. W.). 



3. P. PALLIATUS, T. S. Wright. 



ATRACTYLIS PALLIATA, Wright, Ann. N. H. for Aug. 1861, 129, pi. iv. figs. 6, 7- 

 PERIGONIMUS PALLIATUS, Allman, Ann. N. H. for May 1864. 



Plate XVII. fig. 2. 



STEMS short; POLYPITE minute, fusiform, white, with 8 

 alternating tentacles, the body clothed up to the border of 

 the mouth with a gelatinous envelope*; GONOPHORES 

 borne on the stolon, of large size. 



GONOZOOID. UMBRELLA subcylindrical, with thread-cells ; 



MANUBRIUM 4-lipped ; MARGINAL TENTACLES 2, Opposite, 



long, the intervening canals terminating in small bulbs. 



OF this zoophyte Dr. Wright says, "When first observed, 

 its closely set and dense white polypes, surrounded by their 



* " With a thick layer of ' colletoderm.' "Wright. 



