TRANSACTIONS OF THE SECTIONS. 85 
arrangement. Certain forms belonging to this section recorded by Pennant and 
_ Templeton are also rejected as too imperfectly observed to be cf any service to 
science. 
2nd Section.—Pulmograda with naked ocelli. 
Ist Family.—Vessels branched. 
7th Genus.—Wilisia (new, sp. W. stellata founded on a beautiful little Medusa 
with six starlike ovaries and branched vessels. It is abundant in the British 
Channel and on the west coast of Scotland. 
2nd Family.—Vessels simple ; ovaries convoluted and lining the pedunculated 
stomach. 
8th Genus.—Twurris (Lesson; Eirene, Eschscholtz), 2 sp., TZ. digitale of O. 
Fabricius (Zetland) and 7’. neglecta, Lesson, the Cyanea coccinea of Davis; 
British Channel. Very highly-organized Medusz, closely approaching Ac- 
tinez. 
9th Genus.—Saphenia(Eschscholtz). 1sp., S.dinema,Peron. Devon, Zetland. 
10th Genus.—Oceania (Peron—Tiara, Lesson), 4 sp., one being the Geryonia 
octona of Fleming; the other three are new. 
3rd Family.—Vessels simple, ovaries in the course of the vessels, on the subum- 
brella. j 
a. With eight vessels. 
11th Genus.—Aquorea (Peron), or perhaps deserving of a distinct appella- 
tion; 1 sp., common on the Scotch coast; it is the “ Milicertum campanu- 
latum” of Ehrenberg (not of Eschscholtz), “ Oceania octocostata’’ of Sars, and 
“ Thaumantias Milleri” of Mr. Landsborough, and “ Aquorea octocostata” 
of Lesson. It has long yellow ovaries. 
12th Genus,—Circe (Mertens). Ovaries 8 minute. 1 sp., C. rosea. Zetland, 
new. 
6. With four vessels. 
14th Genus.— Thaumantias (Eschscholtz) ; ovaries four, ovate, clavate or linear, 
stomach short; 19 British species, of which 12 are new and undescribed. 
All very distinct from each other. 
15th Genus.—S/abberia (new), founded for a singular little Medusa remarkable 
for its extremely linear ovaries, long proboscis, and the development of an 
ocellated bulb at the end as well as at the base of each tentacle, S. halterata; 
coast of Cornwall. 
16th Genus.— Geryonia (Peron), 1 sp.,new, G. appendiculata. British Channel. 
17th Genus.—Tima (Eschscholtz?)—T’. Bairdii of Johnston; common on the 
east coast of Scotland. 
4th Family.—Vessels simple; ovary in substance of peduncle. Gemmiparous. 
A. Peduncle with lateral lobes; tentacula fasciculated. 
18th Genus.—Bugainvillia (Lesson—Hippocrene Brandt), with 4 fascicles of 
tentacles. 3 sp., 2 new. 
19th Genus.—Lizzia (new, with 8 fascicles of tentacles and unequal lobes to 
peduncle), founded for the Cytalis octopunctata of Sars, which, with two other 
undescribed species, inhabits the Zetland seas. 
B. Peduncles inflated; tentacula not fasciculated. 
20th Genus.—Moodeeria (new). 1 sp. from the Hebrides. 
C. Peduncle elongate; tentacula not fasciculated. 
. With four tentacles. 
2\st Genus.—Sarsia (Lesson). 4 British sp. 
6. With one tentacle only developed. 
22nd Genus.—Steenstrupia (new), 3 sp. 
In all there are fifty species of British Pulmograda known to Prof. Forbes, excluding 
doubtful forms and varieties. Of these, fifty-nine only had been previously recorded 
as British, and of the remainder all but five are undescribed. 
Prof. Forbes also exhibited some living specimens of the Lancelot (Amphiowus lan- 
_ ceolatus of Yarrell), of a Holothuria, and of a Medusa found in the Southampton 
Water. 
