*4. F. YerriTl — Catalogue of Marine Jfollusca. 
551 
Dendronotus elegans Terrill. # 
Dendronotus elegans Terrill, Amer. Joiirn. Sei.; Proe. TJ. S. Xat. Mus., iii. p. 3S5. 
1880. 
Off Cape Cod, station 330, in 26 fathoms, September 6, 1879. 
DotO formosa Terrill. 
Doto formosa Terrill. Amer. Joum. Sci., x, p. 41. pi. 3. fig. 4. July. 1875. 
I took this species at Eastport, Me., and on the coast of Xova 
Scotia, in 1861. Long Island Sound to Breton Island, X. S. ! From 
low-watermark at Eastport, Me., to 50 fathoms, usually on hydroids. 
Fiona nobilis Alder and Hancock. 
Fiona nobilis Alder and Hancock. British Xud. Moll., JSolidae. Fam. 3, pL 38A. 
Terrill. Amer. Joum. Sei.. xxii, p. 300, 1881. 
Fiona Allantica Bergh. Tidensk. Meddelelser naturh. Forening, Kjdbeuhavn. 1857. 
pp. 273-335. plates 2 and 3, figs. 1-53 (anatomy.) 
A large and handsome Fiona , apparently this species, was found in 
two instances, in large numbers, among Anatifers, on pieces of float- 
ing timber, at stations 935 and 995. 
Head very changeable in form, usually broadly rounded in front 
and laterally. Tentacles large, stout, both pairs about equal, tapering, 
acute, smooth ; the posterior ones are placed rather far back. The 
foot is broad, posteriorly thin, lanceolate, and extends far back (12 to 
15 mm ) beyond the end of the mautle, obtuse at the end; anterior 
angles broadly rounded. Branchiae very numerous, crowded, in a 
broad band on each side, leaving the middle of the back naked ; they 
are elongated, compressed, fusiform, arid have a free-edged, frilled 
membrane, along each edge of the dorsal side. 
General color grayish brown, orange-brown, or dull orange, cor- 
responding closely with the dark colored stems of the barnacles 
among which they were found. Body translucent white, often with 
a tint of orange on the back, and on the posterior part of the head ; 
foot milk-white; numerous irregularly branched, internal, dark 
brown ducts run between and among the branchiae, showing plainly 
'through the skin; branchi® with the nucleus yellowish brown, the 
outer sheath and free membrane pale orange; posterior tentacles 
tinged with orange. No eyes were detected. 
Some of our specimens were kept in confinement several days and 
laid numerous clusters of etrtrs. These are in the form of a broad 
ribbon, spirally coiled in about one and a half turns, so as to form a 
