Excerpt from Quarterly Journal of Microscopical Science, 1895, Vol. 37
The Ascidian described in the present paper was collected in the Antarctic Ocean by Dr. C. M. Donald, of the whaler "Active," during the Dundee Whaling Expedition of 1892-93, and was placed along with other specimens in Professor D'Arcy W. Thompson's hands. Its large size and remarkable appearance attracted attention, and closer examination suggested its possible identity with the species described by Professor Herdman in his report on the Compound Ascidians of the Challenger Expedition ('Chall. Rep.,' vol. xiv, pp 250) as - (?) ignotus. The specimens on which this species was then tentatively founded, two of them in the Challenger collection and the third in the British Museum, were in an unsatisfactory state of preservation, so that Professor Herdman was unable to determine the genus, or even with certainty the family, to which the species belonged. Our specimen was preserved simply in methylated spirit, but on sectioning it was found to be in a better state than might have been anticipated, giving good results with the usual stains and making possible a fairly complete study of its anatomy.
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