616 Proceedings of the Royal Iruh Academy. 



Three additions have been made to the British Fauna, viz : — Hal- 

 campa arenacea, sp. n., from the mouth of Kenmare River (log No. 11), 

 about seven and a-half miles N. E. of Dursey Head ; depth 44 to 38 

 fathoms ; bottom muddy sand. Column divided into physa, scapus, 

 and capitulum ; physa small, apparently without suckers, completely 

 retractile ; scapus cylindrical, even when extended, very contractile, 

 sprinkled with imbedded grains of sand ; capitulum elongated when 

 fully extended ; completely retractile. Tentacles, 12, marginal, mono- 

 cyclic, cylindrical, obtuse, about as long as diameter of disc. Disc 

 flat. Mouth linear. Colour — physa transparent, almost colourless ; 

 scapus pale, dull, madder brown ; capitulum translucent, dirty flesh- 

 colour. Tentacles of same colour as capitulum, with 4 imperfect ]Dale 

 brown bands and a basal M-mark. Disc pale, flesh-colour, with 12 

 pale mesenterial lines ; at the base of each tentacle is a pair of narrow 

 wedge-shaped pale-brown marks, the apices of which point towards 

 the mouth, and between each of these and the latter is a lenticular pale- 

 brown spot, which with its fellows form a ring round the mouth, and 

 separated from it by a short interval. Mouth brownish. Length 

 about 35 mm. in the ordinary condition : can contract to about 18 mm. 

 Diameter variable ; average about 7 mm. This species differs in a most 

 marked manner from the only other known British, or, indeed, !N"orth 

 European species of Halcampa {cf. Note on Halcampa chrysanthellum, 

 Peach, Proc. Roy. Bui. Soc, 1886 (N. S.), v. p. 1, figs. 1 to 4). It 

 is also distinct from the North-east A.merican forms. The number 

 and arrangement of the mesenteries of this species agree perfectly with 

 that which I have recently demonstrated for H. chrysanthellum 

 (Ufig4). 



Grephyra dorhnii. Von Koch. This pretty pink anemone was first 

 described and figured in the Morphologische Jahrbuch, IV., SuppL, 1878 

 (p. 74, pi. v.), from the Bay of Naples. The " Travailleur " expedition 

 dredged it from the Bay of Biscay in 1881. Marion says it is more 

 brilliant in colour than the Mediterranean individuals, and also a little 

 larger in size {Comptes rendus, 1882, p. 458, and Ann. Mag. N.S. 

 (5) IX., 1882, p. 334). We obtained several specimens on Tubularia 

 indivisa from Stations I. and XII., at a depth of 80 fathoms ; sand 

 and broken shells. The colour was brighter than the Mediterranean 

 species, but they were rather smaller in size. In the Gulf of Naples 

 it grows upon Gorgonia, Isis, &c, and Andres states that a spotted 

 variety is found in deeper water (150 mtr.) attached to Antipathes. 

 {Fauna und Flora, Golfes von Neapel., 1883, p. 166). In the Bay of 

 Biscay it was also found on Isis ; in the south of Ireland it has to 

 content itself with the stems of Tubularia indivisa. The Rev. W. S. 

 Green states that he has several times met with this form between 

 Cork and Youghal. 



Chitonactis (?) expansa, sp. n., from the mouth of Bantry Bay 

 (Log No. 22, about four miles S. of Dursey Island), 40 fathoms; 

 coarse sand. Column ; scapus usually very depressed and turban- 

 shaped, but when weakly or dead, obtusely conical, corrugated ; base 



