66 ANTHOZOA HYDROIDA. 



rosacea on the stems of this fucus reminds me of the equally greater 

 development of an alga Ptilota plumosa upon its stems than 

 when springing from a rock. In so far as specimens have come 

 under my observation, each of the two states of the zoophyte is as 

 permanent, according to the object on which it is based, as in the 

 case of the sea-weed. The vesicles, too, differ : those of S. rosacea 

 based on a zoophyte are admirably represented by Ellis." 



Though scattered over the polypidom, the vesicles appear to be 

 produced from one side only, and are often arranged in close rows 

 along the branches. 



4. S. PUMILA, cells opposite, approximate, shortly tubular, 

 the top everted with an oblique somewhat mucronated aperture ; 

 vesicles ovate. S. Doody.* 



PLATE XI. FIG. 3, 4. 



Corallina pumila repens, minus ramosa, Rail Syn. i. 37, no. 19. C. pumila erecta, 

 ramosior, Ibid. 37, no. 20, pi. 2, fig. 1 . Muscus marinus lendigenosus minimus 

 arenacei colons, Morris. Plant, hist. iii. 650, tab. 9, fig. 2. Reaumur in Mem. de 

 1'Acad. Roy. des Sc. an. 1711, 394, pi. 11, fig. 4, M. Sea-oak Coralline, Ellis 

 Corall. 9, no. 8, pi. 5, fig. a, A. Phil. Trans, xlviii. 632, pi. 23, no. 6. Phil. Trans. 

 Ivii. 437, pi. 19, fig. 11. Phil. Trans, abridg. x. 493, pi. 12, fig. 6, F. Sertularia 

 pumila, Lin. Syst. 1306. Pall. Blench. 130. Ellis and Soland. Zooph. 40. Esper 

 Pflanz. Sert. tab. 10, fig. 1, 2. Oliv. Zool. Adriat. 288. Stew. Elcm. ii. 441, P l. 

 12, fig. 10, 11, copied from Ellis. Lam. Anim. s. Vert. ii. 119 : 2de edit. ii. 145. 

 Stark Elem. ii. 440, pi. 8, fig. 14. from Ellis. Johnston in Trans. Newc. Soc. 

 ii. 259. Lister in Phil. Trans, an. 1834, 371, pi. 8, fig. 3. Templeton, lib. cit. 468. 

 Hassall in Ann. and Mag. Nat. Hist. vii. 284, pi. vi. fig. 5. Couch Zooph. Cornw. 

 7 : Corn.Faun. iii. 19. Sertolara pumila, Cavol. Pol. mar. 216, tav. 8, fig. 8-10. 

 Dynamena pumila, Lamour. Cor. Flex. 179. Fkm. Brit. Anim. 544. Blainv. 

 Actinol. 484. Sertolara piccina, D. Chiaie Anim. s. Vert. Nap. iv. 142. Krauss 

 Corall. and Zoophyt. der Sudsee, 28. 



Hah. Near low-water mark very common, parasitical on various 

 Fuci, particularly R vesiculosus, serratus, and nodosus. 



* Doody, Samuel, an apothecary in London, contemporary with Ray, Petiver, and 

 Sloane ; admitted F.R.S. in 1695. He was chosen Superintendant and Demon- 

 strator of the garden at Chelsea, an office which he held for some years previous to his 

 death, which took place in 1706. Petiver characterises him as an "indefatigable 

 botanist" and "memorable naturalist." Jussieu speaks of him as " inter Pharma- 

 copoeos Londinenses sui temporis Coryphaeus." Pulteney styles him " the Dillenius 

 of his time ;" and Brown has crowned his praise by bestowing his name on a genus 

 of New Holland plants. " In memoriam dixi Samuelis Doody, Pharmacopoei Londi- 

 nensis, qui primus fere in Anglia plantas cryptogamicas investigavit." Prod. Flor. 

 Nov. HolL p. 7. See also Pulteney 's Sketches, v. ii. p. 107-9. 



