1865. 



33 3) 



1866. 



33 3. 



1868. 



33 3. 



)} 



33 3 



1869. 



33 3. 



AMPHIPORTTS PTTLCHER. 159 



1788. Planaria rosea, Linnaeus. Syst. Nat. (GmehVs), torn, i, pars vi, p. 3088. 

 1827. „ „ Bosc. Hist. Nat. des Vers., i, p. 256. 



1837. Nemertes pulchra, Johnston. Mag. Zool. and Bot., vol. i., p. 536, pi. 17, f. 6. 

 „ Polystemma roseum, CErsted. Kroyer's Nat. Tids., iv, p. 579. 

 „ „ pulchrum, Ibid. Ibid., p. 580. 



1844. „ „ CErsted. Entw. Plattw., p. 93. 



1846. Prostoma pulchra, Johnston. Ann. Nat. Hist., vol. 16, p. 436. 

 1850. Omatoplea rosea (partim), Diesing. Syst. Helm., vol. i, p. 251 et postea. 



„ „ pulchra. Ibid. Ibid., p. 252. 



1853. Vermiculus rubens, Dalyell. Pow. Creat., vol. ii, p. 89, pi. 10, f. 13 — 18. 

 1862. Ommatoplea pulchra, Diesing. Revis. der Turbell., p. 257. 



Johnston. Catalogue Brit. Mus., p. 24, pi. ii a, f. 6 and 6*. 

 Lankester. Ann. Nat. Hist., 3rd ser., vol. 17, p. 388. 

 Mcintosh. Ann. Nat. Hist., 4th ser., vol. ii, p. 293. 

 Ibid. Kept. Brit. Assoc., 1868, p. 340. 

 Ibid. Trans. Roy. Soc. Edinb., vol. 25, pt. ii, p. 337 et seq. 



Habitat. — Generally diffused round the British coasts in water eight to thirty fathoms deep, 

 and specimens were dredged by Mr. Jeffreys off Unst, Shetland, even at a depth of 120 fathoms. 

 It frequently occurs amongst shells and other debris brought from the coralline region by the 

 fishermen. 



Body one to three inches and a half long, and three to five lines broad ; flattened, thinned 

 at the edges, slightly narrowed behind the snout ; of nearly equal diameter throughout the middle 

 region when stretched, but the anterior part is often narrowed, while the posterior forms a broad 

 flattened oar. In extreme contraction, the body resembles an fflysia or Limapontia, or even 

 becomes baccate. 



Colour. — During the period of reproductive quiescence the animal has a general dull pinkish 

 hue, pale at the snout, along the margins, and at the tail. The pinkish tint proceeds forward 

 in the centre of the snout in front of the ganglia. The under surface is pale pinkish. In the ripe 

 females the lateral regions are enlivened by the rich reddish hue of the ova, which shine through 

 the transparent integuments, so that, from their somewhat symmetrical disposition, the animal 

 has a segmented appearance, from the termination of the oesophageal region nearly to the tip of 

 the tail. In specimens which have lived a considerable time in captivity the dorsum becomes 

 freckled with brownish-red grains, especially towards the snout. 



Head broadly spathulate, pointed at the tip, flattened ; the snout clearly defined from the 

 rest of the body by a well-marked furrow, which notches each side, and passes inwards almost 

 to the middle line. The tip is furnished with a distinct central papilla, from which an opaque 

 line generally proceeds backwards to the central glandular mass. Some distance behind the 

 transverse furrow another oblique groove coming from the ventral surface slants backwards and 

 inwards — meeting its fellow of the opposite side in the middle line of the dorsum, so as to form an 

 acute angle. There are numerous large, well-defined eyes, which form somewhat irregular groups 

 on each side, to the number of about twenty-three in all, three or four lying behind the transverse 

 furrow. These are much more distinct in some specimens than in others. On the under surface 

 the furrows are continued straight inwards towards a dimple (Plate XIV, fig. 11), then curve 

 forward and inwards to the middle line. Numerous longitudinal grooves slant from the front 



