THELEPTTS CINCINNATUS. 171 



in lateral view, a long base and a prow with a strong stud-shaped process. Segmental 

 organs from fourth to seventh segment. Tube of secretion with fragments of shells and 

 other structures attached to it. 



This differs from the northern T. cincinnatus, since the bristles always cease a 

 considerable distance in front of the anus, whilst the hooks have a wider and more convex 

 base, and an additional tooth in lateral view on the crown. 



Synonyms. 



1780. Amphitrite cincinnata, 0. Fabricius. Faun. Cronland., p. 286. 



1820. Terebella „ Savigny. Syst. Annel., p. 87. 



1826. „ lutea, Risso. Hist. nat. fEurope, t. iv, p. 409. 



1847. „ madida, Frey and Leuckart. Beitrage Wirb. Thiere, p. 154. 



1849. Thelepus Bergmanni, Leuckart. Archiv f. Naturges., xv, p. 169, Taf. hi, figs. 4 a — c. 



1851. Terebella cincinnata, Grube. Fam. Annel., pp. 80 and 138. 



1853. Lumara flava, Stimpson. Marine Invert. Grand Manan, p. 30. 



1858. Terebella conchilega, Dalyell. Pow. Creat., vol. ii, p. 199, pi. xxviii, figs. 3 — 8. 



1860. „ pustulosa, Grube. Arch. f. Naturges/, Bd. xxvi, p. 100, Taf. iv, fig. 7. 



1865. Venusia punctata, Johnston. Oat. Worms Brit. Mus., pp. 241 and 345. 



„ Thelepus circinnata, Malmgren. Nord. Hafs. -Annul., p. 387, Tab. xxii, fig. 58. 



„ Heterophyselia cincinnata, De Quatrefages. Annel., t. ii, p. 387. 



„ Phenacia terebelloides, idem. Ibid., p. 375. 



„ Lumara flava, idem. Annel., t. ii, p. 397. 



1867. Thelepus circinnatus, Malmgren. Annul. Polych., p. 110. 

 „ Venusia punctata, Parfitt. Cat. Devon Annel., p. 32. 



„ Phenacia pulchella, idem. Ann. Nat. Hist., 3 ser., vol. xliii, pp. 1, 2, pi. i. 



1868. Heterophenacia nucleolata, Claparede. Annel. Nap., p. 401, pi. xviii, fig. 1. 

 „ Phenacia ambigrada, idem. Ibid., p. 142, pi. xviii, fig. 6 (young). 



„ „ retrograda, idem. Ibid., p. 143, pi. xviii, fig. 7 (young). 



1870. „ terebelloides, Grube. Arch. f. Naturges., 36 Jahrg., p. 332. 



1872. Thelepodopsis flava, Sars. Forh. Vidensk. Selsk. Christ., p. 415. 



1874. Thelepus circinnatus Mcintosh. Ann. Nat. Hist., 4 ser., vol. xiv, p. 205. 

 „ „ „ Malm. Annul. Goteb., p. 98. 



„ „ cincinnatus, Verrill. Americ. Journ. Sc, ser. 3, vol. vii. 



1875. „ circinnatus, Mcintosh. Invert, and Fishes St. Andrews, p. 129. 



„ Phenacia pustulosa, ambigrada and retrograda, Panceri. Atti Soc. Ital. Sc. Nat., voL xviii, 



p. 531. 

 „ Terebella lutea and Heterophenacia madida, idem. Ibid., p. 530. 



1877. Thelepus cincinnatus, Marenzeller. Denkschr. Kaiserl. Akad. Wissensch. Wien, Bd. xxxv, 



p. 36, sep. abdr. 



1878. „ circinnatus, Mcintosh. Trans. Linn. Soc, ser. 2, Zool., p. 508. 



1879. Terebella circinnata, Tauber. Annul. Danica, p. 133. 



„ Thelepus circinnatus, Theel. Kgl. Sv. Vet.-Akad. Handl., Bd. xvi, p. 64. 



1880. Phenacia terebelloides, Langerhans. Zeitschr. f. w. Zool., Bd. xxxiv, p. 107, fig. 21. 

 „ Thelepus circinnatus, Mcintosh. Ann. Nat. Hist., ser. 5, vol. vi, p. 271. 



1881. „ „ Leslie and Herdman. Proc. Roy. Phys. Soc, vol. vi, p. 67. 



1882. „ circinnatus, Ar. Hansen. Norske Nord. Exped., p. 11. 



1883. „ „ Levinsen. Vidensk. Meddel., p. 174. 



„ „ cincinnatus, Wiven. Chaetop. " Yega " Exped., p. 420. 



