CEM.ur,AniA. Z. ASCIDIOIDA. 291 



tered over the branches, render it a remarkably beautiful object un- 

 der the microscope. 



2. C. SCRUPOSA, creeping, dichotomous ; cells alternate with a 

 plain aperture, " an amjie projecting on the outward side of each." 

 Ellis. 



Plate xxxviii. Fig 5, 6. 

 Creeping stony Coralline, Ellis, Corall. 38, no. 4. pi. 20, c, C. Cellifeious 



Coralline with angular edges to its cells, Ellis, in Phil. Trans, xlviii. pi. 



13, no. 7. Phil. Trans, abridg. x. 493, pi. 12, fig. 7, K, L Sertula- 



ria scruposa, Lin. Syst. 1315. Turt. Gmel. iv. 686. Berk, Syn. i. 



220. Turt. Brit. Faun. 216. Wern. Mem. i. 363. Stew. Elem. ii. 448. 



Cellularia scruposa, PoW. Elencb. 72. Flem. Brit. Anim. 339 



Cellaria scruposa, Ellis and Soland. Zooph. 23. Bosc, Vers, iii. 132, pi. 



29, fig. 7. Lam. Anim. s. Vert. ii. 141. 2de edit. ii. 192. Johnston in 



Trans. Newc. Soc. ii. 261, pi. 11, fig. 3 Crisia scruposa, Corall. 



Templeton in lib. cit ix. 469 La. B. raboteuse, JBlainv. Actinolog. 



439. 

 Hub. On the roots of Laminaria digitata, on FlustraR, corallines 

 and old shells, common. 



This frequently covers a space about an inch square, the branches 

 diverging and creeping along the surface or the entangled roots of 

 sea-weed, to which they are attached by simple tubulous root- like 

 fibres pullulating from the plane inferior surface. The branches are 

 rather broad, dichotomous, of an earthy brown colour, brittle when 

 dry. Within the cells I have occasionally seen one, or sometimes 

 two, nearly globular orange-coloured ova. 



3. C. REPTANS, creeping, dichotomous ; cells alternate with an 

 oblique aperture armed with short spines at the top. — Ellis. 



Pi/ATE xxxviii. Fig. 3-4. 



Creeping Coralline, Ellis, Corall. 37, pi. 20, no. 3, fig. b- B. Sertularia 



reptans, Lin. Syst. 1313. Fabric. Faun. Groenl. 44-5, no. 439. Turt. 



Gmel. iv. 685. Tvrt. Brit. Faun. 217. Stew. Elem. ii. 448 S. 



repens, Berk. Syn. i. 220 Cellularia reptans. Pall. Elench. 73. 



Flem. Brit. Anim. 540. Hogg's Stock. 35 Cellaria reptans, Ellis 



ioiA. Soland. Zooph. 23- ^osc, Vers, iii. 132. Lam. Anim. s. Vert. ii. 

 141. 2de Edit. ii. 191. Stark, Elem. ii. 439. Johnston in Trans. Newc. 



Soc. ii. 262 Crisia reptans, Coral. 60. Risso, I'Europ. Merid. v. 



318. Templeton in Mag. Nat. Hist. ix. 469 — La Bicellaire rampante, 

 Blainv. Actinol. 439. 

 Hah. On Flustra foliacea and other submarine bodies, common. 

 Similar to the preceding in form and mode of growth, but its spread- 

 ing tufts cover in general a larger space, and are more densely matted.' 



