470 MOLLUSCA. TUNICATA. Alpidium. 
intestine spirally folded ; ovarium pedunculated— Dr Leach communicated 
this species to M. Savigny, from the British shores in 1816. I have found 
what I am inclined to consider as the same species, on the shore of the Isle 
of May, in the Frith of Forth. 
Gen. CLI. ALPIDIUM — Individuals in a single row round 
the common centre ; systems destitute of a central cavity, 
and the angles of the branchial meshes without papillae. 
594. K. ficus. — Fleshy, lobed, yellowish. 
Alcyonium pulmonis instar lobatum, Ellis., Cor. 82. t. xvii. f. 6 A. fi- 
cus, Linn. Syst. i. 1295.--A. ficus, Sav. Mem. 183. 
Spreading and dividing into flattish lobes, about an inch and a half in dia- 
meter ; of a dark olive colour ; and, when opened, emitting a very disagree- 
able smell ; numerous granules, connected by filaments distributed through 
the mass in the intervals of the systems. 
Gen. CLII. BOTRYLLUS. — Systems consisting of one or 
more regular concentric rows, furnished with a central ca- 
vity. 
^ Individuals disposed in a single row.^ with the central cavity 
apparent and denticulated. 
595. B. Schlosseri. — Lead coloured, the branchial orifices 
white, with a circle of yellow spots. 
Alcyonium carnosum, Schlosser., Phil. Trans. 1756, 449. t. xiv. Borl. 
Corn. 254. t. xxv. f. 1, 2. — A. Schlosseri, Linn. Syst. 1294 — B. Sch. 
Sav. Mem. 200. t. 20. f. 5.— On rocks and sea-weeds. 
Many inches in breadth, and sometimes an inch in thickness ; semitrans- 
parent ; individuals claviform, variegated with yellow and red ; tentacular 
filaments 8, alternately short and long. — M. Savigny refers to this species 
the A. Borlasii of Dr Turton’s British Fauna, described by Dr Borlase, Corn. 
254. t. xxv. 3, 4. though it probably belongs to a different genus. 
Individuals disposed in several rows. 
596. B. conglomeratus. — -Gelatinous, convex, with conglo- 
merate finger-like divisions, and toothless terminal mouths. 
{Gaert. Pal. Spic. Zool. 16. 39. t. iv. f. 6.)— Alcyonium con. Turt. Brit. 
Fauna, 208 B. con. Sav. Mem. 204 — On the Cornish Coast. 
This species is still involved in considerable obscurity. The same remark 
is applicable to Alcyonium constellatum Borl. Corn. 254. t. xxv. £ 5, 6. of Dr 
Turton’s British Fauna. 
