CYNTHIA. 37 



CYNTHIA, Savigny. 



Body sessile, covered with a coriaceous tunic ; branchial and 

 anal orifices opening in four rays or lobes. [Branchial sac 

 longitudinally plicated, surmounted by a circle of tentacular 

 filaments ; meshes of the respiratory tissue not furnished with 

 papillae.] 



1. C. MicRocosMus, Savigny. 



Cynthia microcosmus, Sav. Mem. pt. 2, p. 144, pi. 2, f. 1, and pi. 6, f. 2. — 

 Ascidia microcosmus, Cuv. Mem. Mus. t. ii. pi. 1, f. 1-6 ? 



Body tuberous ; test deeply and unequally wrinkled across, 

 glabrous, yellowish-grey, hard, opaque ; orifices 4-cleft, small, 

 on prominent, tuberculated, conical, hirsute projections, rayed in- 

 teriorly with blue and purple. British specimens are rarely larger 

 than two or three inches in height. 



South coast of England 1 Ireland, W. Thompson. 



2. 0. cLAUDicANS, Savigiij. 

 Sav. Mem. pt. ii. p. 150, pi. 2, f. 1. 



Body tuberous ; test wrinkled and furrowed in every direc- 

 tion, finely bristly, of a greyish or ashy-red or brownish colour, 

 thick, opaque, often encrusted with sand and fragments of 

 shells ; orifices small, deeply i-lobed, reddish, placed on slight- 

 ly prominent conical projections. Usually about an inch in 

 height. 



On oysters, especially in the south. " Not uncommon on oys- 

 ters and other shell-fish taken on the north coast of Ireland," W. 

 Thompson. West coast of Scotland, R. M'Andrew and E. F. 



8. C. TUBEROSA, Macgillivray. 



Macg. Mollusca of Aberdeen, p. 31 1. 



" Greyish-white or grey, sessile, sub-ovate and hemispheric, very 

 densely cartilaginous, covered with irregular prominences or tuber- 

 cles of various sizes. Length one inch." — Macgillivray. 



Deep water off Aberdeen. A reddish-brown Cynthia with red 



