CCXXIV 
APPENDIX. 
Nais Ciliata. 
N. proboscide cylindrico aculeis minutis reflexis hispido, margins antico ciliato. 
Nereis ciliata, MiiZZ. Zool. Dan., v, 3.p. 14. tab. 89. f. 1~4. 
Several individuals, corresponding to the description and plate of Muller’s 
Nereis Ciliata, were taken in a drag-net off one of the North Georgian Islands: 
they were observed to have the power of exerting or of retracting the seta? 
of the tail at pleasure, which may explain the circumstance mentioned by 
Muller, of a specimen having been received from the Feroe Islands, in which 
the setae appeared to be deficient. 
Ascidia Globifera. 
A. pedunculo longo, scabro ; corpore subreniformi ; aperturis distantibus quadrifidis. 
Lara. V. 3. p. 127. — Ascidia Clavata, Faun. Green. No. 323. 
Several individuals were taken by the trawl on the west coast of Davis’ Strait, 
in lat. 70°. This species is described in the Faun. Grosn. under the specific 
name of Clavata, which name has been applied, with more propriety, to the 
Ascidia figured by Pallas, Zool.,\0. p.25.t. l.f. 16, which is distinguished 
by the two apertures being approximate, and terminal instead of lateral ; the 
shape of the body of the present species is well characterized by Pabricius as 
ovatum, subreniforme,” (preferable to the corpore subgloboso of Lamarck ;) 
and the apertures as “ lateribus rugosis eminentibus, altera versus apicem 
sursum, altera versus basin deorsum tendente.” The mouth of both aper- 
tures is in the figure of a cross, in which respect it differs from the A. Pedun- 
culata, Brugiere Diet. No. 12, Encycl. Meth. pi. 6. f. l^, quoted by Lamarck 
as a synonym of the present species, but in which only the superior aperture 
is so distinguished, and the inferior is expressly described as simple: the 
peduncle is rough and hairy. 
