314 PROFESSORS EDWARD FORBES AND J. GOODSIR ON SOME 
spirally. Their formula is 40 x 444. Each of these springs from a bulbous 
base, bearing a small but distinct black ocellus. Between each pair of tentacula 
is a minute transparent mobile pedunculated tubercle. Down the four gastrovas- 
cular canals, very nearly from their divergence, to the margin of the umbrella, 
run the four linear genital glands, tinged with rose colour. They are very pecu- 
liarly formed, each hanging from the surface of the subumbrella in the shape of a 
pair of undulated membranous curtains, strikingly reminding us of the appear- 
ance presented by Stawrophora (so well described and figured by Professor 
AGaAssiz in his Memoir on the Naked-Eyed Medusze of Massachusetts), but differ- 
ing in their nature; for, in the animal we are describing, they are assuredly quite 
distinct from the stomach-lobes. The stomach is rather large and quadrangularly 
campanulate, rose coloured, and slightly fimbriated at the margins. 
Thaumantias confluens.—To find a new species of the genus Thawmantias 
sufficiently distinct from the numerous and very similar described forms, was 
searcely to be looked for. In the one before us, however, we have found such a 
desideratum. 
The Thaumantias confluens differs from all its British allies in having the 
genital glands continued so high up on the gastrovascular canals, that they all 
meet on the vertex of the umbrella, and form an unbroken cross. 
The umbrella is hemispheric, smooth, and colourless. Its margin is fringed 
with pale pinkish tentacula; the formula of their number being 14 x 4 + 4. 
Their bases bear very minute black ocelli; the intertentacular spaces have 
minute tubercle-like bodies on each, some of them being shortly pedunculated. 
The marginal veil is broad. The genital glands are of a pale pink colour, very 
narrow and linear, confluent at their bases, and continued down the upper third 
of each of the four gastrovascular canals. When the creature is in the water, 
they present the appearance of a pink cross. The stomach is very short and 
narrow, and terminates in four lanceolate acute lips. The disk measures nearly 
half-an-inch across. 
This delicate and pretty animal was met with not unfrequently off Tober- 
mory, and afterwards near Skye. 

