86 ANTIIOZOA HYDROIDA. 



hair-like verticillate branchlets ; cells small, sessile, campa- 

 nulate, unilateral ; vesicles scattered, unilateral. Polypes 

 kydraform. 



1. AN. ANTENNINA, 



Iranchlets short ; polype-cells with intermediate cellules. Mrs. 

 Ward* 



PLATE XIX. FIG. 1, 3. 



Corallina astaci corniculorum aemula, RaiiSyn. i. 34, no. 10. Corallina affinis, non 

 ramosa, Pluhen. Almag. Bot. 119. Muscus marinus s. coralloid. non ramosus, 

 erectus, Pluken. Phytog. tab. 48, fig. 6. Lobster's-horn coralline or Sea-beard, 

 Ellis Corall. 15, no. 14, pi. 9, fig. a, A. B. Phil. Trans, xlviii. 630, tab. 22, no. 3. 

 Phil. Trans, abridg. x. 491, pi. 12, fig. 3, C. Sertularia antennina, Lin. Syst. 

 1310. Pall. Blench. 146. Ellis and Soland. Zooph. 45. OKv. Zool. Adriat. 

 289. Berk. Syn. i. 217. Esper Pflanz. Sert. tab. 23, fig. 1-4. D. Chiaie Anim. 

 s. Vert. Nap. iv. 144. Hogg's Stock. 33. Nemertesia antennina, Lamour. Cor. 

 Flex. 1 63. Antennularia antennina, Flem. Brit. Anim. 546. Johnston in Trans. 

 Newc. Soc. ii. 260. Hassall in Ann. and Mag. Nat. Hist. vi. 168, pi. 5, fig. 3. 

 Macffillivray in Ibid. ix. 464. Couch Zooph. Corn. 13 : Corn. Faun. iii. 29, pi. 7. 

 Ant. indivisa, Lam. Anim. s. Vert. ii. 123 : 2de 6dit. ii. 156. Templeton in 

 Mag. Nat. Hist. ix. 468. Blainv. Actinolog. 486, pi. 83, fig. 3. 



Hob. "Grows in clusters on sandy soils or on stones lying in 

 sand, rooted together by small brown tubular fibres, which are 

 matted together by sand and fragments of shells." JR. Q. Couch. Ge- 

 nerally distributed on the British shores. 



Polypidoms clustered, rooted by a sponge-like mass composed of 

 numerous implexed tubular fibres, erect and straight, attaining a 

 height of eight inches and upwards, cylindrical, regularly jointed, of 

 a clear yellowish horn colour, usually undivided, but sometimes 

 irregularly branched. In these instances the branches are exactly 

 like the primary shoot, and are equally beset with hair-like branch- 

 lets, arranged in numerous whorls a whorl to each articulation. 

 " The number of branchlets in each whorl varies from five to nine, 

 and in the same specimen the number usually remains the same 

 throughout." Hassall. When magnified, they " have the appearance 

 of sickles, and bend in towards the main stem :" they are capillary, 

 swollen at the base, irregularly jointed, the joints oblique, thick- 

 ened ; the cells small and campanulate with an even rim, distant, 

 with two or three abortive cells or denticles between each. Vesicles 

 egg-shaped, situated in the axils of the whorls, subpedicellate, 



* " Found on the rocks by Mrs. Ward, an ingenious gentlewoman of Gisburgh, in 

 Cleveland, Yorkshire, and by her named Sea-teard ; I suppose from its growing in a 

 thick tuft. Mr. Lawson." Ray. 



