ij 
524 SIR CHARLES ELIOT ON THE NUDIBRANCHIATA * 
several ridges on the outside, and there is a glandular mass at the point where it leaves 
the stomach. Internally, both the intestine and the adjacent parts of the stomach bear 
very strong laminz, which resemble plates but are not detachable. Posteriorly, the 
stomach is produced into a prolongation which extends to the end of the body cavity, 
and gives off on each side, at. points not exactly opposite to one another, six branches, 
which enter the body wall. In front the stomach adheres pretty closely to this wall, 
and the liver is almost entirely within the sides of the body, but posteriorly it lies also 
within the cavity of the body, and covers the arrangement of tubes described with a dull 
purplish-brown mass of irregular shape, consisting of many lobes formed of minute 
convoluted tubes. The branches of the digestive system are not subdivided in the 
body cavity, but as soon as they enter the sides they are extensively ramified and form 
a thick spongy layer of tubes covered with liver cells, from which arise the diverticula 
which enter the cerata. This feature seems similar to the arrangement found in 
Gonieolis typica by Bera (R. Bergh, die Nudibr. gesammelt wiahrend d. Fahrten d. 
Willem Barents in das nordl. Eismeer, 1885, p. 17). 
The hermaphrodite gland lies on the top of the liver, and the posterior two-thirds of 
the body are almost entirely filled by a large mass of genital products, falling roughly 
into two halves, lying on the right and left. These halves are divided into numerous 
lobes of irregular shape, about 10 mm. long, 7 broad, and 4 thick. The lobes are 
composed of packets (about 2 mm. x 1 mm.), consisting of a number of yellowish bodies 
set in colourless jelly. They contain two different kinds of elements, which are 
presumably ova and spermatozoa, the first round, the second more or less elongate 
but of varying shape. The anterior portion of the body is filled chiefly by the huge 
mucous gland (about 33 mm. x 22 mm.) which lies under the stomach. It is white, 
rather slimy, and formed of innumerable windings. Inside it is the much smaller | 
yellow albumen gland. The spermatotheca is of moderate size and roundish; the vas 
deferens much convoluted. The verge is cylindrical, not tapering, and unarmed. 
Within it is seen a twisted channel. The external orifices of these organs are protected 
by ample folds, one of which lies in front of them and the other behind, with a 
continuation below. . 
The species is distinguished by its great size, high shape, and numerous cerata set 
in several irregular rows. 
Notaeolidia purpurea, sp. nov. 
One specimen captured in Scotia Bay, 10 fathoms. It is of a uniform dull 
purplish-brown, and the preserving fluid has also become purplish. The form is rather 
elongate, the measurements being, length 41 mm., breadth across cerata 17, height 14. 
The left oral tentacle is missing, having apparently been bitten off; the right one is 
very large, 19 mm. long and 5 broad at the base, but tapering. It curves straight 
backwards, and not at all outwards. The other external characters are as in NV. gigas. 
