512 ZOOPHYTA. GORGONIADiE. Gorgonja. 



Ellis, Cor. p. 61. t. xx vi. A. Linn. Syst. 1293 — Cast ashore, Mount's 

 Bay, Cornwall, Borlase. — Leith shore, Mr John Mackay. 



The axis is black, the cells minute, scattered, and occurring chiefly on one 

 side. There is no satisfactory evidence that this species is indigenous to our 

 rocks. The specimens which have been found among the rejectamenta of 

 the sea, have probably belonged to some wrecked vessel from the West In- 

 dies. At the same time, Mr Neill informs me that he saw Mr Mackay's 

 specimen shortly after it was found, and that it had all the aspect of being 

 fresh and recent. 



74. G. anceps. — Subdichotomously branched, the branches 



free, compressed, with cells on each margin. 



Keratophvton dichotomum ; caule et ramulis lreviter compi-essis, Ray, 



Svn. p." 32 Sea-willow, Ellis, Cor. p. 68. tab. xxvii. f. 2-9 — G. an. 



Linn. Syst. 1292 Margate, Mr Dale (Ray) — Ireland, Ellis. 



The axis is of a horny nature, inclining to leather. The cells are in rows. 

 b. Cells prominent, with armed margins. 



75. G. placomus. — Margins of the cells spinous. 



Keratophyton flabelliforme, cortice verrucoso obductum, Ray, Syn. 32 ? 

 Warted Sea-Fan. Ellis, Cor. p. 67- tab. xxvii. f. 1. a. A. A. 1. A. 2. 

 A. 3. Borl. Corn. p. 238. tab. xxvii. No. 1. Linn. Syst. 1290 — Rocks, 

 Cornwall. 



The axis is ligneous. The branches are dichotomous, a little compressed, 

 irregularly incurved, but rarely uniting. The flesh is full of denticulated 

 spicula. The cells are conical, angular, and covered on the margin with 

 little spines or pointed scales. It is probable that the references to Hay 

 should be added to the following species, as Linnseus has clone. 



76. G. verrucosa. — Margins of the cells denticulated. 



Ellis, Phil. Trans, i. t. xxxiv. f. 19. a. Linn. Syst. i. 1291. Cav. Mem- 



p. 32. tab. i. f. 1-11 G. viminalis? Sowerby, Brit. Misc. tab. xl — 



Cornwall, Ellis, and Mr Batten.— Devonshire, Montagu. — Scotland, 

 Sowerby. 



The axis is woody, and the flesh granular. The branches grow in a flat 

 fan-shaped manner,' subdichotomous. The cells are crowded irregularly, and 

 their margins are denticulated. In Mr Sowerby's figure, one of the notches 

 is represented as much larger than the others, forming about one-third of the 

 margin. This appearance, however, is irregular, as in a specimen which I 

 received from Mr J. D. C. Sowerby, as the*G. viminalis of his father ; the 

 margin of the cells was regularly denticulated in some, and in others the large 

 tooth was variable in the proportion of the margin which it occupied. Though 

 this circumstance has been overlooked by preceding authors, there is little 

 reason to consider it the indication of a new species, unless genuine speci- 

 mens of G. verrucosa can be produced destitute of this character ; and there 

 is no ground for considering it as the G. viminalis of Ellis. According to Ca- 

 volini, the tentacula of the polypi are flat, tapering, and pinnated, and the 

 body or head supporting these, "protrudes considerably beyond the margin. 



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