318 REPORT 1868. 



scaly investiture of irregular- shaped cribriform calcareous plates. Found 

 in St. Magnus Bay, and also on the Balta Haddock-ground. 



Synapta digitata (Montagu) ^hirodota digitata, Forbes, British Starfishes, 

 p. 239. 



A vinous-purple Synapta, which was taken in 1861 in 40 fathoms, 

 about 5 miles north of the Whalsey Lighthouse, and also on the Out 

 Skerries Outer Haaf, I cannot distinguish by any other character except 

 colour from 8. digitata, to which, therefore, I assign it as a variety. 



inhcerens (Miiller) = Holotlmria inhcerens, Miiller, Zool. Dan. pi. xxxi. 



figs. 1-7 ; Yon Diiben & Koren, Ofversigt af Skand. Echinod. p. 322, 

 pi. v. figs. 56-62 ; Woodward & Barrett, Proc. Zool. Soc. 1858, p. 363. 

 St. Magnus Bay, 1867 ; two or three specimens. 



Class ACTINOZOA. 



In the Zoantharia the arrangement of Gosse's ' History of British Sea 

 Anemones and Corals ' is followed, and in the Alcyonaria Johnston's * British 

 Zoophytes.' 



Order ZOANTHARIA. 



Actinoloba dianfhus (Ellis). In extraordinary profusion in the caves at 



Burrafirth ; also under rocks between tide-marks. 

 Sagartia troglodytes (Johnston). In crevices of rocks between tide-marks to 



the south of Lerwick. 

 viduata (Miiller). " Common, low water to 15 fathoms, Out Skerries, 



Unst, and Dourie Yoe, 1864 " (fide Peach in litt.). 

 Adamsia palliata (Bohadsch). Haddock-grounds, common. 

 Actinia mesembryanthemum, Ellis & Sol. 

 intestinalis, Fleming. An obscure species. Fleming says of it, " It 



adheres to rocks at low- water mark, Zetland " (Johnston, Brit. Zooph. 



p. 219). 

 vermicular is, Forbes. " Dredged in 50 fathoms by Mr. M'Andrew and 



myself between Sombro' Head (Zetland) and Fair Island ; also in 80 fa- 

 thoms, west of Zetland," Professor E. Forbes (Johnston, Brit. Zooph. 



p. 222, pi. xxxviii. figs. 2-5). 

 Bulocera Tuedice (Johnston). A very fine specimen on the Haddock-ground 



to the north of the Out Skerries in 40-50 fathoms, and another off Unst 



The detached tentacles are much more frequently met with. 

 eques, Gosse. A magnificent specimen dredged in 1863 in 80 fathoms 



to the north of Unst, and again obtained by Mr. Peach in 1864 near the 



same place, in 100 fathoms. 

 Tealia digitata (Miiller). Very abundant on the Outer Skerries Haaf, 



attached to shells of the rarest univalve Mollusca, Fasus Islandicus 



(true), F. Berniciensis, F. Norvegicus, Buccinopsis Dalei, as well as to 



those of the more common Fmi, and of the deep -water form of Bucci- 



num undatum. 



crassicornis, Miiller. 



Stompliia Churchice, Gosse. In 110 fathoms, sandy ground, on the Outer 



Haaf off Unst, 1864 (fide Peach), and St. Magnus Bay, 1867. 

 Arachnactis albida, Sars. "Abundantly in the towing-net, 1862" (Allman 



in litt.). 

 Corynactisviridis, Allman. Yery local, on the spot between tide-marks, Out 



Skerries, and in about 10 fathoms. Mr. Peach tells me he found it in 



1864 on a stone dredged in 100 fathoms off Unst. 



