60 NOTES ON THE ANATOMY OF DINOPHILUS. 



specific name, wliicli has already been published in the Proceedings 

 of the Cambridge Philosophical Society (vol. vi). According to 

 Levinsen, D. candatus is the species whicli has been described by 

 other writers as B. vurticoides j its colour is stated to be red, whilst 

 no mention is made of the existence of four-lobed ovaries or of 

 segmental ciliated rings. 



REFERENCES. 



1. TAN Benkden, p. J. — Notice siir un nouveau Nemertien de la cote d' Ostende. Bull. 



de I'Acad. Royale de Belgique, Tome xviii. Ire Partie, 1851, p. 15 {_Dinophilus 

 vorticoides']. 



2. FoETTiNGER, A. — BechercTies sur V organisation de Mistriobdella homari, P. J. van 



£eneden, rapportee aux Archiannelides . Archives de Biologie, Tome v, 1884, p. 435. 



3. Feaipont, J. — Le Oenre PoJygordius. Fauna uud Flora des Golfes von Neape), xiv 



Mouogrrapliie, 1887. 



4. Hallbz, p. — Contributions a I'Sistoire Naturelle des Turhellaries. Lille, 1879, p. 155 



[^Dinoplnlus metameroides^. 



5. Hatschkk, B. — Protodrilus Leuckartii. Hine neue Oattung der Archianneliden. 



Arbeiten a. d. Znol. Inst. d. Universitat Wien, Tom. iii, 1880, p. 79. 



6. KonscHELT, E. — Uber Bau und Entioicklung des Dinophilus apatris. Zeifcs. f. wiss. 



Zool., Bd. xxxvii, 1882, p. 315 (and p. 702). 



7. KoRSCHELT, E. — Die Oattung Dinophilus u. der hei ihr auftretende Geschlechtsdimor- 



phismus. [Spengel's] Zoologische Jalnbiicher, Zeits. f. Syst., Geog., u. Biol, der 

 Thiers, B.l. ii, 1887, p. 955. 



8. Lang, A. — Die Polycladen. Fauna und Flora des Golfes von Neapel, xl Monographie, 



1884, p. 678, &c. \^Dinophilus gyrociliatus^. 



9. M'Intosh, W. C. — The Marine Invertebrates and Fishes of St. Andrews. Edinburgh 



and London, 1875, p. 108, and pi. viii, figs. 7 — 10 [^Dinophilus vorticoides']. 



10. Mereschkowskt, C. — Ueber einige Tiirbellarien des Weissen Meeres. Arch. f. Naturg., 



xlv Jahrg., i Bd., 1879, p. 51 \_Dinophilus vorticoides]. 



11. Meyer, Ed. — Studien iiber den Korperhau der Anneliden. Mitt. a. d. Zool. Stat, zu 



Neapel, Bd. vii, 1886-87, p. 592 [Taf. xxvii, figs. 9, 10, Dinophilus gyrociliatus], 



12. REPiACHOPr, W. — On the Anatomy and Developmental Sistory of Dinophilus gyro- 



ciliatus, O. Scliiiiidt. Odessa, 1886 [in Russian]. 



13. Weldon, W.F.R. — On Dinophilus gigas. Quart. Journ. Mic. Sci.,vol. xxvii,1887,p.l09, 



and Studies-Morph. Lab. Univ. Cambridge, vol. ii, 1886, p. 258. 



DESCRIPTION OF PLATES IV and Y. 



Illustrating Mr. S. F. Harmer's paper, " Notes on the Anatomy of 



Dinophilus." 



2f.B. — All the figures refer to Dinophilus txniatus. 



Fig. 1. — Dorsal view of a young individual ; the mouth, which is ventral, is represented 

 as being visible through tlie semitransparent tissues of the head. 

 ^ Fig. 2. — Ventral view of an adult female, somewhat compressed. 



Fig. 3. — Longitudinal section of an adult male (combined from several sections). Most 

 of the organs are shown as they appear in a median section; i.e. the brain, alimentary 

 canal, testis, penis, and generative pore. The eye, ventral ganglia (the distinctness of 



