178 



THELEPUS TRISERIALIS. 



segments, the first in a line with the first bristle-bundle. Eye-specks asjin the former 

 species. Ventral scutes 15. Lateral papillge as in T. cincinnatus. Setigerous and 

 uncinigerous processes similar to T. cincinnatus, but the former bears somewhat stouter 

 bristles with slightly broader wings, and in the hooks the stud-like process on the prow 

 (anterior end of the base) has a different angle, and a different process beneath it, whilst 

 the posterior indentation is perhaps better defined. The upper teeth and the crown are 

 much larger than in T. cincinnatus, though such may be a variation. 

 Brownish-violet or orange in colour. 



Synonyms. 



1855. Terebella triserialis, Grube. Arch. f. Naturges., 21 Jahrg., p. 118, Taf. iv, fig. 16. 



1864. „ ;, idem. Insel Lussin, pp. 85 and 128. 



1865. Phenacia setosa, De Quatrefages. Annel., t. ii, p. 376 (only 2 branchiae on second and third 



segments) . 

 „ Terebella triserialis, idem. Ibid., t. ii, p. 364. 

 „ Neottis „ Malmgren. Nord. Hafs. -Annul., p. 388. 



1869. Phenacia setosa, Grube. Schles. Gesell., 1868 — 69, p. 110. 



1870. „ „ idem. Arch. Naturges., 1870, p. 332. 



1871. Terebella triserialis, Grube. Jahresb. Schles. Ges. f. Vaterl. Cult., p. 49. 

 1875. Phenacia „ Panceri. Atti Soc. Ital., vol. xviii, p. 531. 



1884. Thelepus „ Marenzeller. Sitzb. der K. Acad. Wiss., Wien, Bd. lxxxix, p. 58, Taf. ii, 



fig. 3. 

 „ Carus. Fauna Medit., i, p. 266. 



setosus, De St. Joseph. Ann. Sc. nat., 7 e ser., t. xvii, p. 230, pi. x, figs. 259—262. 

 cincinnatus, var. profundus, Roule. Camp. " Caudan," p. 459. 

 triserialis, Ehlers. Schwed. Magell. Annel., p. 16. 



and Neottis spectabilis, Pratt. Proc. Lit. and Pliilos. Soc. Manchester, p. 14. 

 triserialis, Ehlers. Polych. Magell. u. Chil., p. 212. 

 setosus. Journ. M. B. A., vol. vii, p. 229. 



thoracicus, Gravier. Nouv. Arch. Mus., ser. 4, t. viii, p. 218, pi. iv, figs. 228, 229. 

 triserialis, Fauvel. Bull. Instit. Ocean., cxlii, p. 37. 

 setosus, idem. Ann. Sc. nat., 9 e ser., t. x, p. 209. 



„ Southern. Proc. Roy. Irish Acad v vol. xxviii, p. 238. 

 „ idem. Ibid., vol. xxxi, JSTo. 47, p. 125. 

 „ idem. Irish Sc. Invest., No. 3, p. 47. 



Fauvel. Arch. Zool. Exper., t. Iv (Fasc. 10), p. 466, figs. 3—6. 

 „ Rioja. Anel. Poliq. Cantab, p. 57. 

 triserialis, Hessle. Zool. Bidr. Uppsala, Bd. v, p. 217. 

 setosus, Fauvel. Arch. Zool. Exper., t. lviii, p. 455. 



Habitat. — Between tide-marks, under stones in Guernsey and Herm, and also 

 dredged off St. Peter Port. Dredged in 10 fathoms in Lough Foyle, Ireland, in the 

 " Porcupine " Expedition of 1869. Dublin Bay (as T. setosus) ; in laminarian roots 

 and amongst Zostera in Blacksod and Clew Bays (Southern). 



In the Mediterranean near Sicily, Villafranca and Lussin Piccolo, etc. (Grube and 

 Marenzeller). Atlantic coast, K America (Verrill). Shores of France, Madagascar, 

 Australia (Fauvel). Shores of Cantabria (Rioja). Magellan (Ehlers). Falkland Islands 

 (Fauvel). Red Sea (Gravier). 



1885. 

 1894. 

 1896. 

 1900. 

 1901. 



a 

 1904. 

 1906. 

 1909. 



a 

 1910. 

 1914. 

 1915. 

 1916. 

 1917. 



a 



1919. 



