Branchiomaldane vincenti 147 



Black Seas, from which A. ecaudata has not been recorded and in 

 which it probably does not occur. 



Polperro, Cornwall ... 62. 5. 5. 48-52. 



Cornwall 68. 1. 17. 9. 



(" A. nodosa ") * South Devon . Mus. Leach. Old Coll. 



Plymouth .... Norman Coll. 1912. 4. 8. 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 . . . . . Nornian Coll. 98. 5. 6. 17-19. 



Mediterranean 85. 8. 10. 49. 



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



Eudoume, Marseilles. . . ,, ,, 1912. 4. 9. 41/2. 



Sevastopol .... . 1912.4.9.38. 



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



BBANCHIOMALDANE Langerhans (1881). 

 BRANCHIOMALDANE VINCENTI Langerhans. 



Plate XI, Figs. 31, 32, 33. 



Branchiomaldane vincenti 



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

 fig. 21 (Teneriffe). 



Branchiomaldane vincenti 



Ashworth, Proc. B. Soc. Edin., xxxii (1912), p. 62. 

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

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

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



Arenicola vincenti 



Fauvel, C. R. 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. Gills, 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 pairs of 

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

 nephridium elongate and extending backwards into the seventh and 

 eighth segments (or even further). Hermaphrodite, reproductive 

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



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



L 2 



