8 BRITISH TUNICATA. 



Amoroucium proliferum THOMPSON Nat. Hist. Ireland, IV 



[1856], p. 362; r ANSTED & LATHAM Channel Isl. (1862), 



p. 219]. 

 \_Amoroecium proliferum WOODWARD Man. Moll.pt. 3 (1856), 



p. 343, pi. xxiv, f. 18 (larva).] 

 [Amauroecium proliferum BRONN Thier-Keichs, III (1861), 



pp. 136, 180, 192, pi. xiv, ft'. 1-3, 5-15.] 

 [Amarucium proliferum GRUBE Insel Lussin Meersf. (1864), 



pp. 31, 57, and in Abh. scliles. Ges. vaterl. Cultur, 



1868-69 (1869), pp. 105, 125.] 



[Amaurucium proliferum GEGENBAUR Grundz. vergl. Anat. 

 ' ed. 2 (1870), p. 280, f. 64.] 



Colon// turbinate or clavate, sometimes consisting of 

 several masses rising from a common pedunculate base 



f 









: .,- 



FIG. 90. Amarouciuin proliferum. One and a half times natural size. 



(M. Edwards, pi. iii, f. 2.) 



(PI. LII and fig. 90 in text), occasionally solitary and 

 sessile ; sub-globose and rather fleshy above, more 

 coriaceous below, where it is often covered with small 

 grains of sand or shell ; yellowish or orange-coloured, 

 marked with red from the inclosed animals, occasion- 

 ally bright scarlet. Individuals irregularly arranged 

 in undefined sub-circular systems, each of which has 

 a common excretory orifice (PI. LIII, fig. 3). Thorax 

 red. [Branchial aperture furnished with a membra- 

 nous crown, the margin regularly six-lobed (fig. 91, ft), 

 and showing within it nine or ten irregularly-lobed 



