ON THE SHETLAND CRUSTACEA, TUNICATA, ETC. 827 
Lizzia blondina, Forbes. ‘First met with in the Sound of Bressay, and after- 
wards off Fitful Head” (E. F.). 
Genus Mareeztis, Steenstrup. 
Margelis ramosa (Dalyell)=Tubularia ramosa, Dalyell, and Medusa ocilia, 
Dalyell, pl. xi., = Bougainvillia Brittanica, Forbes. “ Zetland” (KE, F.). 
—— nigritella (Forbes)= Bougainvillia nigritella, Forbes. “ Discovered by 
* Mr. M‘Andrew and myself in the Sound of Bressay, Zetland, during the 
autumn of 1845” (E.F.). (Vide also for remarks on this genus, A. Agass. 
Cat. p. 157, and Allman, Ann. Nat. Hist. 3rd ser. vol. xiii, May 1864), 
Fam. Tus uLARIAD&, Johnston (restricted). 
Sarsia gemmifera, Forbes. ‘Several specimens in the Zetland seas, by Mr. 
M‘Andrew and myself in 1845” (E. F.). “ Sarsia gemmifera, Forbes, 
Nak. Med, pl. vii. fig. 2, and Sarsia prolifera, Forbes, Nak. Med. pl. vii. 
fig. 3, may belong to this genus (1. e. Hybocodon, L. Agass.), or form 
another distinct group” (L. A.). 
Euphysa aurata, Forbes. ‘A very beautiful little Medusa, taken in 1835 
in Bressay Sound” (E. F.). 
Steenstrupia rubra, Forbes. ‘ Hundreds of specimens secured in the bays 
of both sides of Zetland” (E. F.). 
- Genus Ecrorrevra, L. Agass. 
Ectopleura pulchella, Forbes=Sarsia pulchella, Forbes. ‘ Several specimens 
in Bressay Sound, Zetland, in 1845” (EK. F.). 
As already stated under Coryne pusilla, Forbes’s Sarsia tubulosa, 
procured in Shetland, is the gonosome of that species according to L. 
Agassiz; Hincks writes to me on it, “ Sarsia tubulosa, zooid of Syn- 
-coryne, perhaps S. gravata.” (Vide also Allman, Ann. Nat. Hist. 
3rd ser. vol. xiii, 1864, May.) 
Clas PORIFERA. 
Dr. Bowerbank’s ‘Monograph of the British Spongiade’ is used as the 
text-book for this Class; and the whole of my collections having been con- 
tinually placed at that author’s service during the preparation of his work, 
the species in the following list have in every case, where there was the re- 
motest doubt, been sent for examination and determined by him, a large 
number of them being types of his species. In the year 1864, when I was 
prevented accompanying the Dredging Committee, Mr. Peach, who was of the 
party, paid special attention to the preservation of the sponges, and was in- 
strumental in adding a considerable number of species to our fauna. 
Order CALCAREA. 
Grantia compressa (Fabr.). Common between tide-marks. The finest spe- 
cimens I have ever seen taken in one limited spot at the Out Skerries. 
A small and very curious variety between tide-marks in Halse Hellyer, 
Burrafirth. 
ciliata (Fabr.). On Fuci frequent, tide-marks. It is much to be re- 
gretted that Bowerbank in his work has transgressed the law of the 
British Association rules of nomenclature, strictly observed by all natu- 
ralists (except certain French writers), of affixing that author’s name who 
first described the species. Thus he assigns this and the foregoing species 
to Fleming, whereas they were both characteristically described by O. Fa- 
