OPHIODROMUS FLEXUOSUS. 117 



1. Ophiodeomus flexuosus, Delle Chiaje, 1825. Plate LVII1, figs. 12 and 13 — head; 

 Plate LXIX, fig. 13— feet; Plate LXXVIII, figs. 1 and 1 b— bristles. 



Specific characters. — Head small, distinct; eyes four, the anterior pair being the 

 larger and wider apart. Tentacles three — two lateral and a median — besides a pair of 

 palpi, which have a large basal joint, and are external and lateral in position. Body 

 2 J inches long, dilating behind the head, attaining its maximum about the anterior third, 

 and then tapering to the tail, which has two long cirri. The first four segments bear 

 long tentacular cirri. Colour, various shades of lustrous brown ; a whitish streak, often 

 with a bluish lustre, runs backward from the median tentacle, and divides the head into 

 halves. The dorsum is transversely banded at intervals with belts of fine iridescent blue. 

 Ventral surface a deep madder brown. Proboscis large, cylindrical, devoid of papillse or 

 jaws. Foot elongated, biramous ; dorsal division has a long cirrus, a slender, tapering 

 setigerous process, with a spine and a tuft of elongated, slender bristles, the shafts of 

 which are longitudinally striated and have faint transverse touches, after the manner of 

 the ventral series, but less distinct. Ventral division has a long setigerous region 

 enclosing the spine, with, posteriorly, a stiff fan of jointed bristles, the terminal sabres of 

 which have a claw at the tip blocked by a process beneath, and a serrated edge. 



Synonyms. 



1825. Nereis flexuosa, Delle Chiaje. Mem., II, pp. 368, 401, and 425, tav. xix, fig. 8. 



1841. „ flexuosa, Delle Chiaje. Descriz., Ill, p. 97, V, p. 103, tav. 129, fig. 8. 



1855. Oxydromus fasciatus, Grube. Arch. f. Naturges., p. 98, Taf. iv, f. 1 and 2. 



1861. Ophiodromus vittatus, M. Sars. Forh. Vid.-Selsk. Christ, and Nyt. Mag., XI B, p. 87. 



1864. Oxydromus fasciatus, Grube. Insel Lussin, p. 82. 



„ Podarlce albocincta, Ehlers. Borstenw., p. 190, taf. 8, f. 2 — 5 ?. 



1865. Nereis punctata, Johnston. Cat. Brit. Mus., p. 280. 



„ Ophiodromus vittatus, De Quatrefages. Annel., II, p. 657. 

 1867. „ ., Malmgren. Annul. Polych., p. 31. 



1869. „ „ Mcintosh. Rep. Brit. Assoc. (1868), p. 339. 



,, „ ,, Mcintosh. Trans. R. S. Eclin., vol. xxv, p. 410, pi. xv, figs. 7, 8. 



1870. 8 tephania flexuosa, Claparede. Annel. Nap., Suppl., p. 118, pi. xii. fig. 1. 



1873. Ophiodromus vittatus, G. O. Sars. Bidrag. Christ. Fauna, p. 29. 



1874. „ „ Malm. Op. cit. Goteb., p. 81. 



„ „ flexuosus, Marenzeller. Beitr. z. Kennt. Adriat. Annel. in Sitz. Wien Akad., p. 23. 



1875. „ vittatus, Ehlers. Zeitsch. f. w. Zool., Bd. xxv, p. 44. 

 1879. „ „ Tauber. Annul. Danic, p. 92. 



1883. „ „ Levinsen. Vidensk. Meddel. Foren. Kjobenh., p. 238. 



1885. ,, flexuosus, Cams. Fauna Medit., p. 238. 



1893. „ vittatus, Levinsen. Vidensk. Ud. " Hauchs," p. 328. 



1898. „ flexuosus, De St. Joseph. Ann. Sc. Nat., 8 e ser., t. v, p. 339. 



1905. ,, „ Graeffe. Arbeit. Zool. Stat. Triest, xv, p. 324. 



1906. „ „ Bohn. Ann. Sc. Nat., 9 e ser., t. iii, p. 72. 



