ON THE SHETLAND CRUSTACEA, TUNICATA, ETC. 



Order GYMNOCHROA. 

 Hydra viridis, Linn. In ponds and weedy lakes. 



Order THECAPHORA. 



Hydrallmania falcata (Linn.). 



Plumularia pinnata (Linn.). 



helecioides, Alder. Found by Mr. Bailee in 1858 (fide Alder, Ann. Nat. 

 Hist. Feb. 1860, in note under Camp, fastiyiata). 



setacea (Ellis). Not common. 



Catharina, Johnston. In great abundance, 40-73 fathoms, 5-10 miles 



east of Balta ; also Dourie Voe, &c. 



frutescens (Ellis <fc Sol.). Frequent, but the specimens usually small, 



Middle and Outer Haafs, 40-80 fathoms. 



Aglaophenia myriophyllum (Linn.). Not uncommon, and often very fine. 



Antennularia antennina (Linn.). Rare in Shetland, while the next is 

 common. 



ramosa (Lamx.). 



Thuiaria thuia (Linn.). Frequent in about 40-50 fathoms. 



articulata (Pallas). Rare, Middle Haaf. 



Sertularella Gayi, Lamx. Common, Middle Haaf. 



polyzonias (Linn.). Common. 



tenella (Alder). Parasitic on Tiibularia indivisa. 



rugosa (Linn.). Creeping on sponges, tide-marks, abundant in Halse 



Hellyer, Burrafirth. 



DipTiasia rosacea (Linn.). Off Balta Sound, and in the Burrafirth caves. 



r alata, Hincks. Dredged one mile north of Whalsey Lighthouse, 40 fa- 

 thoms, and also to the north of Unst. 



pinaster (Ellis & Sol.) <$ =S. Maryareta, Hassall $ . Common in 40- 



80 fathoms. 



tamarisca (Linn.). Frequent, 40-90 fathoms. 



fallax (Johnston). Rare, 1861. 



fSertularia pumila, Linn. At low water, common on Fuci. 



abietina, Linn. 



filicula, Ellis & Sol. "Barlee,. 1858" (fide Alder in litt.) ; " 50-100 fa- 

 thoms, rare, Out Skerries and Unst, 1864 " (Peach in litt.). 



gracilis, Hassall. Found in 1861, the exact habitat forgotten. 



operculata, Linn. 



aryentea, Ellis & Sol. Lerwick Sound, and off Balta. 



. cupressina, Linn. Balta Sound and Burrafirth caves, not common, and 



small. 



Halecium halecinum (Linn.). 



Beanii, Johnston. Frequent. 



labrosum, Alder. A fine specimen procured by Mr. Barlee in 1858, and 



again taken by myself in 1861, in deep water, to the north of Unst. 



muricatum (Ellis & Sol.). A fragment procured by me in 1861 off 



Unst, and submitted to Mr. Alder, was thought by him to be referable 

 to this species, although, as it did not bear any gonophores, some doubt 

 attaches to the identification. 



Salacia abietina (M. Sars) = Grammaria ramosa, Alder. The genus Salacia, 

 Lamx., takes precedence of Grammaria, Stimpson. 



Frequent, 40 fathoms, Middle Haaf, and a little to the north of 

 Whalsey Lighthouse. 



