NULLIPORA. 241 



Ramalina fastigiata. It is less stony than N. polymorpha. The 

 surface is smooth and imperforate, of a pale pea-green colour ; 

 the interior yellowish-white, solid and as unporous as the surface. 

 It grows in irregular masses from one to two inches in diame- 

 ter. 



4. N, AGARiciFORMis, corcil composcd of thin foUaceous 

 lamina twisted into sinuous folds. 



Woodcut, No. 23. 



Mosco petroso, Imperat. Hist. nat. 600, cum fig. 



Millepora agariciformis, Pall. Elench. 263. Lam- Anim. s. Vert. 



ii. 204 : 2de edit. ii. 312. 

 Millepora coriacea, Linn. Syst. 1285. Esper, Millep. tab. 12. 



Bosc, Vers, ii. 343. 

 M. deeussata, Ellis and Soland. Zooph. 131, tab. 23. fig. 9. Es- 



■per Millep. tab. 25, fig. i — 4. Lose, Vers, ii. 344. 

 M. tortuosa, Esper, Millep. tab. 22. 

 Nullipora agariciformis, Blainv. Actinol. 605. 



Hah. " Dr Fai*ran of Feltrim near Dublin informs me that 

 it is found on a small bank in water about fifteen feet deep, and 

 appears like paving stones at the bottom : the only locality he 

 knows is Roundstone bay, Connamara, whei-e he observed it 

 seven or eight years ago." Wm. Tliompson. 



This interesting coralline grows in globular masses as lai'ge 

 as a man's fist, or lai'ger, made up of thin foliaceous laminae 

 folded into sinuous cavities and freely inosculating. The entire 

 mass is very light and fragile, rather elegant, and of a whitish 

 colour. The laminae are thin, even on the margins, smooth on 

 both sides, solid and entirely destitute of pores. 



The description which Pallas has given of this coralline is so 

 good that I give it hei*e entire : " Lamina; seraicirculares, planse, 

 satisque tenues, margine subarguto, plerumque subparallelae, 

 interdum decussantes varieque coalitae. Substantia dura, albis- 



