88 MELINNA PALMATA. 



The tubes of the Norwegian examples are of tough secretion coated with fine mud and 

 here and there an arenaceous Foraminifer. It is curious that this species has never been 

 tossed on shore at St. Andrews. It probably inhabits the deeper water. It is the 

 common form in Norway. 



3. Melinna palmata, Grube, 1869 (= M. adriatica, Marenzeller). Plate CXIII, fig. 1 — 

 body; Plate CXIX, fig. 2— edge of dorsal collar; Plate CXXV, figs. 3-3 c— 

 bristles, hooks and setigerous process. 



Specific Characters. — Cephalic region generally as in Melinna cristata, but differing in 

 the minute size of the post-branchial hooks and in the conspicuously barred condition of 

 the branchiae, which are arranged as in M. elisabetlidc — that is, are not placed one in front 

 of the other. The membranous crest of the fourth segment has four to eight rounded 

 teeth. Tentacles four. Anterior region of the body typical (with eighteen bristled 

 segments). Bristles rather stronger than in M. cristata and the shorter series more 

 distinctly curved. Anterior hooks with five teeth and a process between the last and 

 the prow ; thirty-six to forty-seven in single rows, except the first and the last. 

 Of a dull or slightly purplish pink hue, the branchiae varying from pink to pale pink. 

 Tube rather friable, composed of secretion coated with mud. 



Synonyms. 



1869. Melinna palmata, Grube. Jahresber. nat. Schles. Gesell., p. 40. 



1874. „ adriatica, Marenzeller. Sitzb. Akad. Wien, vol. lxix, p. 472, pi. vii, fig. 6. 



1875. „ „ Panceri. Atti Soc. Ital., vol. xviii, p. 532. 

 „ „ „ Marion. Rev. Sc. nat., t. iv, p. 307. 



1885. „ „ Cams. Fauna Medit., vol. i, p. 269. 



1893. „ „ Marenzeller. Denkschriffc K. Akad. wiss. Wien, Bd. lx, p. 34, Taf. ii, fig. 6. 



„ „ palmata, Lo Bianco. Atti E,. Accad. Sc. Nap., vol. v, No. 11, p. 65. 



1895. „ „ Fauvel. Mem. Soc. National des Sc. Nat. Cherbourg, t. xxix, p. 345, pi. xxiv, 



fig. 148. 



1904. „ adriatica, Allen. Journ. M. B. A., vol. vi, p. 230. 



1909. „ palmata, Fauvel. Bull. Inst. Ocean., No. 142, p. 22. 



1910. „ adriatica, Elwes. Journ. M. B. A., vol. xi, p. 6. 

 1917. ,, adriatica, Rioja. Anel. Poliq. Cantab., p. 45. 



„ „ „ Hessle. Zool. Bidrag. Uppsala, v, p. 94. 



Habitat. — Common in soft mud in Plymouth Sound, on the shore and in deeper water 

 (Allen) ; Torquay, amongst Zoster a roots (Elwes). 



Abroad it occurs in the Adriatic (Marenzeller) ; Monaco (Fauvel) ; St. Malo and 

 Chausey (Grube and Fauvel) ; shores of Cantabria (Rioja). 



In general aspect this form approaches Melinna cristata, though it differs in the 

 appearance of the branchiae and the obscurity of the hooks. The snout bears a series of 

 smooth tentacles, about twelve in number, the shorter forms being inferior. They occur 

 on the dorsal base of a funnel-shaped process — apparently the homologue of the cephalic 



