. FISHES, ETC. OF THE ‘NASSAU’ VOYAGE. 489 
140. CYNTHIA GIGANTEA, S. n. 
This species, of which I have likewise met with no description, is of very large size. 
It is of an oblong form, flattened from side to side. The test is very strong and cori- 
aceous, of a dirty brown colour. The oral and atrial apertures are irregularly plicated, 
situated on two very prominent mammiform papillæ. The base is generally incrusted 
with sand ; and in many cases the test bears a number of parasitic animals. The largest 
specimen obtained measured no less than 8 inches from base to apertures, and was 
between 4 and 5 inches broad. Attached to the test were a number of moderate-sized 
Boltenie and a variety of Polyzoa. 
141. BOLTENIA LEGUMEN, Lesson. 
A species of Boltenia, common in the eastern part of the Strait, and also met with at 
the Falkland Islands, is, I believe, referable to the above species, obtained ‘sur les. 
rivages de la baie Francaise de la Soledad, une des Malouines." 
142. PxvRA Morrx, Blainv. 3 
I met with the only described species of this curious genus of social Tunicata both at 
Chiloe, where it is known under the name of * pinré,” and at Luco Bay (a subdivision of 
the Bay of Arauco), and preserved specimens from both localities, which were afterwards 
despatched to England. I regret, however, that I have not succeeded in finding them 
among my collections deposited at the British Museum, and that I am, in consequence, 
unable to furnish an exact description of the animal, which as yet appears to be prin- 
cipally known from Molina's account of it (* Saggio sulla storia naturale del Chili”). The 
individual animals (which are of considerable size, sometimes exceeding a couple of 
inches in length) lie in cells, in a firm matrix of cartilaginous consistence; and from 
the hurried inspection that 1 made of them at the time they were collected, I have little 
doubt that the genus belongs to the social, and not the compound section of attached 
Ascidians. 
- GOODSIRIA, g. n. (Ascid. Soc.). 
Mass elongate, lobed, rooted at the base, composed of very many minute flask-shaped animals, imbedded 
in cells in the circumference of a fibro-gelatinous matrix. Oral and atrial orifices of individuals in 
general distinct, situated on well-marked papillæ. 
Species uniea :— 
143. G. COCCINEA. ; 
On what appears to me to be a new genus of social Tunicata, of which I met with 
numerous examples in the eastern portion of the Strait of Magellan, and also at Port 
Stanley, in the Falkland Islands, I have bestowed the above generic. ne in honour of 
the late Prof. Goodsir, to whom, conjointly with the late Prof. Edwad De”, science is 
indebted for valuable observations on this class of animals. E 
The animal mass presents a very remarkable appearance when fresh, reminding one in 
some measure of certain of the fleshier Aleyonoid polyps. It frequently attains a very 
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