Branchionialdane vincenti 147 



Black Seas, from \s\\\(t\\ A. ccaiulata lias uot been recorded aud in 

 wliich it probably does not occnr. 



Polpeno, Cornwall ... 62. 5. r>. 48-52. 



Cornwall 68. 1. 17. 9. 



(" ^1. nofZosa "j ' South Devon . Mus. Leach. Old Coll. 



Plymouth .... Nonuau Coll. 1912. 4. H. 4. 



Port Erin, I. of Man . . . Ashworth Coll. 1912. 4. 9. 43-5. 



Blacksod Bay, Mayo (end of 



post-larval phase) . . ., „ 1912. 4. 9. 40. 



Naples Nomian Coll. 98. 5. 6. 17-19. 



Mediterranean .... 85. 8. 10. 49. 



Cette, Herault .... Ashworth Coll. 1912. 4. 9. 39. 



Eudounic, Marseilles. . . „ ,, 1912.4.9.41/2. 



Sevastopol .... „ „ 1912. 4. 9. 38. 



Santander .... „ „ 1912. 4. 9. 35-37. 



BliANCHIUMALDANE Laugerhans (1881). 



Branohiomaldane vincenti Laugerhans. 



Plate XI, Figs. 31, 32, 33. 



Bi'anchiomaldane vincenti — 



Lajigerhans, Nova Acta K. Leop.-Car. Akad., xlii (1881), p. 116, tab. v, 

 fig. 21 (Teneriffe). 



Branchionialdane vincenti — 



.hhworth, Proc. R. Soc. Edin., xxxii (1912), p. 62. 

 Gamble and Ashworth, Q. J. Micr. Sci., xliii (1900), pp. 536, 553. 

 Mcmil, Bull. Sci. France Belg., xxx (1897), p. 156 (St. Martin) ; xxxii (1899), 

 p. 323 ; Zool. Anz., xxi (1898), p. 635. 



Arenicola vincenti— 



Fauvcl, C. E. Acad. Sci. Paris, cxxvii (1898), p. 735 ; Bull. Sci. France 

 Belg., xxxii (1899), p. 313 ; Mem. Soc. Nation. Sci. Nat. Math. Cher- 

 bourg, xxxi (1899), p. 165. 



Clymenides incertus — 



Mesnil, Bull. Sci. France Belg., xxx (1897), p. 154. 



Adult. — Small, ecaudate, feebly-pigmeuted Arenicolidae, found 

 living in mucous tubes among algae or on stones. (jJills, consisting 

 of one, two or three, rarely four, finger-shaped filaments, borne 

 dorsally on the middle and posterior segments. The branchial 

 segments are, for the most part, bi-annulate, being composed of a 

 larger anterior chaetiferous and a smaller posterior branchiferous 

 annulus. Prostomium large, nuchal groove shallow. Two pau's of 

 nephridia, opening on the fifth and sixth segments, the second 

 nephridium elongate and extending backwanls into the seventh and 

 eighth segments (or even further). Hermaplu-odite, reproductive 

 organs situated on the septa and oblique muscles. Statocysts absent. 



' See pp. 134, 135, for remarks on this specimen. 



L 2 



