78 BRITISH TUX1CATA. 



Edinb. Encycl. XIV, pt, 2 (1820), p. 631 ; LAMODROUX 

 Exp. nietli. Polyp. (1821), p. 76, pi. Ixxvii, f. 9; FLEMING 

 Philos. Zool. (1822), II, p. 515 ; DELLE CHIAJE Mem. Anim. 

 senza Vert. Ill (1828), pp. 85, !>4, pi. xxxvi, ff. 14- 

 16; FLEMING Moll. Anim. (1837), p. 214; LAMARCK Hist, 

 nat. Anim. s. Vert. ed. 2, III (1840), p. 507;] THOMPSON 

 in Ann. Nat, Hist, (1) V [1840], p. 95; [DELLE CHIAJE 

 Desoriz. Anim. Invert. Ill (1841), p. 18, pi. Ixxxv, if. 

 14-16; THOMPSON in Rep. Brit. Assoc. for 1843 (1844), 

 p. 264; COCKS in Rep. R. Cormv. Polyt. Soc, for 1849 

 (1850), p. 74; THOMPSON Nat, Hist, Ireland, IV (1856), 

 p. 362 ; NORMAN in Zoologist, XV (1857), p. 5707 ; GRUBE 

 Ausfl. nach Triest (1861), p. 122]. 



Botrylloides Leach I i MILNK EDWARDS Obs. Ascidies comp. 

 [1841], p. 89, [in Mem. Acn.l. Sci. lust. France, XVI FI 

 (1842), p. 304;] FORBES & HANLEY Brit. Moll. I [1848], 

 p. 23 ; ALDER & HANCOCK (?) in Trans. Tyneside Nat. 

 Field Club, I [1848], p. 206. 



Colony (PI. LXIV, figs. 1 and 2, and fig. 130 in text) 

 incrusting, moderately thick, gelatinous, transparent, 



FIG. 130. Botrylloides Leachii. Natural size. (Savigny, pi. iv, f. 6.) 



of a pale brownish [or purplish] tint, with the im- 

 bedded gemmae and marginal tubes yellow. Individuals 

 ochreous yellow r , varying through different shades of 

 the same colour to orange and red, but generally 

 uniform in tint and without markings except a faint 

 paler circle around the disc ; arranged in linear series 

 on each side of the common cloacal cauals, forming 

 [numerous] systems with ill-defined limits, the rows 

 being continuous in ramifying or anastomosing lines, 

 leaving lozenge-shaped, circular, or oblong spaces 

 between ; the excretory orifices usually near the junc- 

 tion of the branches. Tentacular filaments yellow. 



