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, B. caudatus is the species which has been described by 

 other writers as D. vorticoides 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. VAN Benkdeit, p. J. — Notice sur m» nouveau Nemertien de la cote d' Ostende. Bull. 



de TAoad. Royale de Belgique, Tome xviii. Ire Partie, 1851, p. 15 [^DinopUlus 

 vorticoides']. 



2. FoETTiNaEB, A. — RechercTies sur I' organisation de Bistriohdella homari, P. J. van 



Beneden^ rapportee aux Archiannelides, Archives de Biologic, Tome v, 1884, p. 435. 



3. Fbaipont, J. — Le Genre Polygordias. Fauna uud Flora des Golfes von Neapel, xiv 



Monograpliie, 1887. 



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



\_Dinophilus metameroides], 



5. Hatsohek, B. — Protodrilus Lenchartii. Sine neue Gatiung der Archianneliden, 



Arbeiten a. d. Zool. Inst. d. Universitat Wicn, Tom. iii, 1880, p. 79. 



6. KoESCHELT, E. — ifber Bau und JSntwicMung des Dinophilus apatris. Zeits. f. wiss. 



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



7. KoESCHELT, E. — Die Qattung Dinophilus u. der hei ihr awftretende Oeschlechisdimor- 



phismus. [Spengel's] Zoologischc Jahrbucher, Zeits. f. Sjst., Geog., u. Biol, der 

 Thiere, Bfl. ii, 1887, p. 955. 



8. Lakg, a. — Die Polyeladen. Fauna und Flora des Golfes von Neapel, xi Monographic, 



1884, p. 678, &c. l^Dinophilus gyrociliatus']. 



9. M'Intosii, 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. Meeesohkowskt, C. — Uebereinige TurbellaHen des Weissen Meeres. Arch. f. Naturg., 



xlv Jahrg., i Bd., 1879, p. 51 [Dinophilus vorticoides]. 



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



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



12. Repiachoff, W. — On the Anatomy and Developmental History of Dinophilus gyro- 



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



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



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



DESCRIPTION OF PLATES IV and V. 



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



Dinophilus." 



N.B. — All the figures refer to Dinophilus tieniatus. 



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

 as being visible through the semitransparent tissues of the head. 

 6 Pia. 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 oV 



