Farcimia. Z. ASCIDrOIDA. 295 



opinion differs too little from Cellularia to be admitted. There is 

 certainly much sameness in the characters of these genera, but there 

 is a recognizable difference in the form of the cells, more particularly 

 in the aperture, liker in Acamarchis to that of Flustra than of Cellu- 

 laria, which warrants us in laying hold of it as a line of separation in a 

 case where the dissimilarity in habit is very obvious. The agree- 

 ment in this respect between the species seems no less patent, al- 

 though it has not been hitherto perceived. 



Farcimia,* Fleming. 

 Character. — Polypidom rooted^ plant-like, calcareous, di- 

 chotoinous ; the branches cylindrical, regularly jointed, with im- 

 ynersed rhomboidal cells diverging from the axis, disposed in quin- 

 cunx, and opening on the surface ; the apertures lateral, plain, 

 non-operculate. 



1. F. &!s.hico'R^i\, articulations nearly cylindrical ; the cells 

 rhomboidal, plain. 



Plate xxxvii. Fig. 6, 7. 



Corallina fistulosa fragilis, Raii, Hist. i. 65 Corallina fistulosa fragilis, 



internodiis praelongis laevibus, albis, farciminum mode cateiiatis, Pluken. 



Phytog. pi. 26, fig. '2 Bugle Coralline, Ellis, Corall. 46, no. 1, pi. 



23. Escbara fistulosa, Lin. Syst. edit. 10, 804 Tubularia fistu- 

 losa, Lin. Syst. 1302. Berk. Syn. i. 214. Turt. Gnael. iv. 666. Turt. 



Brit. Faun. 210. Stew. Elem. ii. 438 Cellularia Salicornia, Pall. 



Blench. 61 Cellularia farciminoides, Ellis and Solajid. Zooph. 26. 



C. salicornia, Lam. Anim. s. Vert. ii. 135. 2de edit. ii. 176. Stark, 



Elem. ii. 439. Bosc, Vers, iii. 129, pi 28, fig. 6, Corall. 55- Lamour. 



Zooph. 5. Risso, L'Europ. merid. v. 317 La Cellaire salicorne, 



Blainv. Actinol. 455, pi. 77, fig. 1 Farcimia fistulosa, Flem. Biit. 



Anim. 534. Johnston in Trans. Newc. Soc. ii. 266 Salicomiaria 



fistulosa, Templetonin Mag. Nat. Hist. ix. 469 Isis hippuris ? Fa6rjc. 



Faun. Groenl. 427. 



Hab. On corallines and old shells from deep water, not uncommon. 

 Torquay, Dr Coldstream. CuUercoats, Northumberland, Mr Jos. 

 Alder. Dunstanborough, Mr Emhleton. Coast of North Durham 

 and Berwickshire, occasionally, G. J. 



One of the finest of British zoophytes. Polypidom from 1 to 3 

 inches high, white, calcareous, fibrous at the base, erect, regularly 

 dichotomous ; branches erecto- patent, straight ; joints constricted, 



* From Farcimen — a sausage, in allusion to the manner in which the inter- 

 nodes are joined. The genus is synonymous with the Cellaria of Lamouroux, 

 and with the Salicornaria of Cuvier, Reg. Anim. iii. 303. 



