TETHYDE. BOTRYLLID&. 243 
the stomach ; the ovaries are orbicular and white; the right 
ovarium is situated higher than the left one, and is supported 
at its inferior margin, under the intestine. 
3. Borryuuus Saviensrt. Tab. XI. fig. 1-2. 
The body is cartilaginous, transparent, purplish or greenish, 
with few systems, four, five, eight, nine, ten and eleven. 
Inhabits the British Sea; is very rare. During a residence 
at Sandgate in Kent of nearly four weeks I found but seven 
specimens. 
Il. Botrylli conglomerati. The animals of this section are 
disposed in many series or ranges; their apertures not close 
together. 
4. BoTRYLLUS CONGLOMERATUS. 
The body hardish, testaceous, the animals arranged in many 
oval apertures ; with the systems conic, few and small. 
Botryllus conglomeratus, Gertner apud Pall. Spic. Zool. Fas. 
10. t. iv. f. 6. a. A; Brug. Encycl. Méth. no. 2. 
Alcyonium conglomeratum, Gmel. Syst. Nat. 3816. no. 23. 
Botryllus conglomeratus, Savigny, Mém. sur les Anim. sans 
Vert. Fas. 1. Syst. des Ascidies comp. et simp. 204. 
Inhabits the Huropean sea in deep water. 
I found several specimens at a place named the Diamond 
Rock between Hastings and Dover, by trawling in very deep 
water. 
I cannot conclude the descriptions of the species inhabiting 
our coasts without mentioning that my worthy friend, Julius 
Cesar Savigny, has done more for the promotion of minute 
comparative anatomy than any other individual. What he has 
done respecting the anatomy of the compound and simple Asci- 
dize, and what he is now doing with the class Anellides, will for 
ever immortalize him. 
Cuvier’s anatomy of the genus Ascidia is likewise a valuable 
acquisition to oar more minute knowledge of what had been 
neglected for centuries. 
M 2 
