SEniALAiuA. Z. ASCIDIOIDA. 251 



ed under each bend, and the branchlets at each division, and they are 

 perforated with u single series of rather distant holes with a raised 

 rim as if thoy had been bored from within outwards : cells three between 

 each joint, deciduous, oval, transparent. — " The animals are very easi- 

 ly seen in all their details in this species, from the great transparency 

 of the vesicles, and are provided with eight tentacula," Thompson) 

 which '' are ciliated but not armed with spines." Farre. 



The holes in the sides of the capillary branches mark the places 

 whence the polype-cells have fallen. The spine-like points in which 

 the divisions of the branchlets terminate have suggested the Linnean 

 specific name ; and that of Ellis and Pallas expresses the silky ap- 

 pearance which dried specimens exhibit. Ellis has well marked the 

 distinctions which separate the species from the Sertulariadse. " The 

 motion of the intestines of the young Polypes was very distinguish- 

 able till the water became putrid ; and then both vesicles and poly- 

 pes dropped off, like blighted blossoms off a tree ; and the substance 

 of the parent polype, though seeming to fill the whole cavity of the 

 branch before, as soon as the water became improper for its support, 

 shrivelled up immediately so as scarce to be visible" 



23. Serialaria,* Lamarck. 

 Character. Polypidom confervoid, horny, the shoots slen- 

 der, filiform, Jistular and branched : cells tub ulous, uniserial and 

 unilateral, disposed in close parallel companies at stated intervals. 

 — Polypes ascidian. 



1. S. LENDiGERA, much branched, the branches spreading, sub- 



dichotomous ; cells in isolated groups, erect, with wide uneven 



apertures. — Doody. 



Vignette, No. 40, page. 249. 

 Fucoides lendigenim capillamentis Cuscutae instar implexis, Rail, Syn. 



38. no. 3 Nit Coralline, Ellis, Corall. 27, no. 24, pi. 15, fig. b. B. 



Sertularia lendigera, Lin- Syst. 1311. Pall. Elench. 124. Ellis 



and Soland. Zooph. 52. Turt. Gmel. iv. 682. Berk. Syn. i. 218. 

 Stew. Elera. ii- 445. Wern. Mem. i. 5G4. Turf. Brit. Faun. 215. 

 Bosc, Vers, iii. 117. Hogg's Stock. 33. Lister in Phil. Trans, an. 



1834, 384 La Sertolara lendinosa, Cavol. Polip. Mar. 229, tav. 9, 



fig. 1, 2 Serialaria lendigera, Z,am. Anim. s. Vert. ii. 130. 2de 



edit. ii. 169. Risso, L'Europ. Merid. v. 315. Flem. Brit Anim. 547 



Stark, Elem. ii. 439. Templeton in Mag. Nat. Hist. ix. 467. Ama- 



thia lendigera, Lamour. Cor. Flex. 159. Corall. 68 La Serialairc 



lendigere, Blainv- Actinol. 476, pi. 83, fig. 2. 



" From seriala, diminutive formed from series, a row. 



