18 BRITISH TUN 1C ATA. 



Rev. Thomas Hincks, Dr. Gr. S. Brady, Mr. George 

 Hodge, Mr. A. J. More, and Mr. C. W. Peach. 



[Between 1863 and 1870 several valuable papers on 

 the British Tunicata and their distribution appeared. 

 It will suffice to mention the more important contri- 

 butions of Dr. W. C. Mclntosh, the Rev. A. M.Norman, 

 and the authors of this Monograph. 



In 1865 Mr. Alder reported on the Mollnsca found 

 in deep-sea dredging on the coasts of Northumberland 

 and Durham in 1862 to 1864 ('Nat, Hist. Trans. 

 Nortlmmb. and Durh.,' i), giving a list of ten species 

 collected along the coast and on the Dogger Bank, but 

 not adding any new British record. In the same year 

 Scdpa spinosa was added to our fauna by Dr. Mclntosh 

 from the Hebrides, and the Rev. A. M. Norman from 

 (luernsey, but Mr. Norman's paper communicating his 

 discovery to the British Association was not published. 

 Dr. Mclntosh's paper was read before the Royal Society 

 of Edinburgh and published in the following year 

 (' Proc.,' v). In it he gives a list of twelve species from 

 North Uist, Outer Hebrides, including this titdpa and a 

 new species of Cynthia which he named C. ii'istise. 

 This list was considerably extended in 1867 by Mr. 

 Alder, who enumerated nineteen species in a report on 

 dredging among the Hebrides in July, 1866 (' Rep. 

 Brit. Assoc.' for 1866), but without making any addi- 

 tion to the British fauna. In the " Shetland Final 

 Dredging Report ' of the British Association (' Rep. 

 Brit. Assoc.' for 1868) the Rev. A. M. Norman enu- 

 merated twenty-seven species determined by Mr. 

 Alder, adding considerably to our knowledge of the 

 distribution of the Tunicata in the Scottish seas, but 

 not giving any new British record, for although he 

 gives Ascidia obliqua, A. rudis, A. plebeia, and Poli/cli- 

 n inn siiccineum as " species added to the British fauna 

 during the recent dredging' 1 (i.e. 1861-67), these 

 species had been sent by him to Mr. Alder, who 

 described them in 1863. 



The last paper to be mentioned is one by Mr. 



