110 



PERCY SLADEN TRUST EXPEDITION. 



Echinogorgia ramosn, sp. n. 

 Menacella sladeiii, sp. ii. 

 Bebrijce mollis, Philippi. 



„ acanthoides, sp. n. 



Avamptogoryia spinosa, Hiles. 



„ ceylunensis (ii. nom, for Echhw- 



muricea ceylunensis, Thomson 

 and Henderson). 

 „ iiracilis, Thomson. 



„ foliuta, sj). n. 



„ tenuis, Thomson and Simpson. 



Acis sulitaria, Pourtales. 

 „ indiva, Thomson and Henderson. 

 „ cei/loifusis, Thomson and Henderson. 

 ,, spinosa, Thomson ;ind Henderson. 

 ,, alba, Tliomson and Henderson. 

 „ dejecta, sp. n. 

 „ alternans, sp. n. 

 „ ohscura, sp. n. 

 Muricella complanuta, Wriglit and Studcr. 

 ,, purpurea, Whitelegge. 



Muricella rubra, Thomson. 



Elasmugorgia flifurmis, Wright and Stnder. 



Family Plexaurid.b. 

 Plexauroides prcelonga (Ridley), var. cinerea, 



Ridley. 

 Euplexaura untipathes (Klnnzinger). 



„ Jlenmosa (n. nom. for Plexawa anti- 

 pothes, Kluiizinoerj var. flexuusa, 

 Thomson and Henderson). 



Family Gorgonid'^. 

 Gorgunia dubia, sp. n. 



Family Gorgonellid^e. 

 Nicella dichotoma. Gray. 

 Juncella gemmacea (Valenciennes). 

 Scirpearella aurantiuca, Thomson and Henderson. 

 Scirpearia furcata, H ickson. 



„ flagellum (Johnson). 

 Gurgonella orientalis, Wright and Studcr. 



„ verriciJata, iM. -Edwards and Haime. 



Verrucella fiexuosa, Klnnzinger. 



Intkoductort Note. 



Some of the most interesting features of this collection of Axifera may be briefly 

 alluded to, taking tliem in the order in which they are discussed in the text. 



(«) The beautiful and somewhat divergent species of Plinnarella, known as P. deli- 

 cat issima, Wright and Studer, is represented in the collection by a variety found at 

 Providence, 128 fms. The new variety differs from the type in the minute details of the 

 calyx-scales. The distribution is very striking, for tlie type was obtained by the 

 ' Challenger ' from the West Coast of Patagonia, 140 fms. 



(b) Interesting new species of Calicof/orgia have afforded material for making a clearer 

 distinction between this genus and the nearly related Antliogorgla. 



{c) In Calicogorgia rigida, sp. n., the polyps contained numerous embryos about 1 mm. 

 in diameter, which we liope to discuss along with other similar bodies in a separate 

 communication. Many of the embryos showed a distinct invagination at one pole. 



{d) The somewhat divergent Echinogorgia ramosa, sp. n., seems to us to connect this 

 genus with Antkogorgia. 



[e) A study of specimens of Bebryce mollis, Philippi, has confirmed our conclusion, 

 svibstantiated elsewhere, that this sjjecies should include _B. jiliilippi, Studer, and 

 B. stnderi, Whitelcgge. If so, we have in B. mollis a fine illustration of wide distri- 

 bution — from the Mediterranean to Punafnti. The remarkable species B. acanthoides, 

 sp. n., which seems very divergent, is linked to B. mollis by a new Indian species, 

 B. tenuis, described in the second part of 'The Alcyonaria of the Indian Ocean' (1909). 



(/) The collection shows several illustrations of quite remarkable "convergence." Thus 



