Actinana g 10] 



referred to Paractidae. Probably its acontia had been lost by strong contraction. 

 In that case it would belong to this subfamily and would come near Hormathia, 

 on account of its smooth capitulum and scapus, but it differs from that genus, 

 as at present understood, in lacking a circular row of coronal verrucse on the 

 parapet. 



In these characters it is like the Actinia abyssicola Moselej', referred to 

 Stephanadis by Hertwig. Both he and Moseley described the parapet as thick- 

 ened but not verrucose. Hertwig found a few cinclids, but no acontia. 



Raphactis abyssicola (Moseley) ^'erriIl. 



Actinia abyssicola Moseley, Trans. Linn. Soc, Ser. 2, Vol. 1, p. 297, PI. 45, 

 fig. 5, 1877. Andres, op. cit., p. 364. 



Stephanadis abyssicola Hertwig, op. cit., 1882. 



Plate XXII; Fig. 7(?) 



According to Moseley, in life its colour on the column was reddish j^ellow, 

 paler on the parapet; capitulum rose-red, with darker radial lines; disk rose- 

 red, tentacles paler red. Height was 5 mm.; greatest breadth, 35 mm. It 

 was taken in lat. 40° 17' N., south of Nova Soctia, in 1,350 fathoms, in 1873. 



It probably should be called Raphactis abyssicola, for it agrees well with 

 the type of that genus, in most respects. Perhaps my fig. 7, of pi. XXII, is 

 the same species, from near the same region. 



Synanthus mirabilis Yerrill. 



Synanthiis mirabilis Vehrill, Amer. Journ. Science, Vol. XVIII, p. 474, 1879; 

 vol. VII, p. 211, fig. 23, 1899 (pars); Bull. Mus. Comp. ZooL, vol. xi, p. 48 

 1883. (Probably not fig. 9, pi. VI). 



Fig. 15. Synanthus mirabilis Vervil!. Two individuals surrounding and girdling a branch of 

 Paragorgia (o, d,), and united by a suture above and below (a, b,); x about 1^. 



This small species has not yet been obtained in a sufficiently good state 

 of preservation, for complete anatomical studies by sections; it has about 48 

 pairs of mesenteries; only six pairs are perfect; sphincter muscle mesoglceal, 

 thick. 



It has the amplexicaul habit, common to many other deep sea species. 

 This particular species seems to prefer to attach itself to the smaller branches 

 of Paragorgia arborea. It then spreads its base around the branch, the two 

 opposite lobes meeting and uniting by a suture, thus girdhng the branch and 

 sometimes causing a deep constriction, at which the branch may easdy break 

 off. Frequentlv two or more unite together, to form the girdle, as in the figure. 



