AND PELAGIC SURFACE-SWIMMING SPECIES. 299 



It is possible that I may have been deceived as to tbe folding over of the body, for it 

 may be noted that the animal was injured by the dredge ; but it appeared to me that the 

 hinge-like folding place was natural, and not artificially produced. 



This animal was dredged between the Banda group and Amboyna, in lat. 4° 21' S., 

 long. 129° 07' E., on Oct. 3, 1874. 



Edwakdsia comacea, sp. n. (Plate XLV. figs. 11-14.) 



The body is cylindrical, and when fully extended of nearly equal diameter throughout, 

 and worm-like in appearance and movement. When the animal is at rest with the 

 tentacles fully expanded, as shown in fig. 11, the posterior portion of the body is dis- 

 tended and somewhat ovoidal. The entire median region of the body is covered with a 

 dense coriaceous test, thickly beset with grains of sand, shells of Foraminifera, &c, the 

 whole forming a tough brown tube, into which the anterior region of the body is 

 completely retractile. In the contracted condition the animal is pointed at the anterior 

 extremity, whilst the posterior thin-skinned region is distended and pushed out into 

 the form of a rounded disk (fig. 12). The animal thus in the act of retraction of its 

 anterior extremity must obtain firmer hold in the sand by distension of the posterior 

 part. The base is imperforate and of a pinkish violet colour. The general colouring 

 of the anterior retractile region of the body and disk is a pale pinkish white. The ten- 

 tacles are 16 in number, disposed in two series, of which the external are most brightly 

 coloured. They are marked by equidistant transverse bands of reddish brown, the outer- 

 most placed on the tips. On the disk are yellow streaks between the bases of the ten- 

 tacles, and on the light external tentacles reddish-brown streaks placed internally to 

 these on either side. The oral protuberance is uncoloured. The remainder of the 

 anterior retractile region of the body, for a short interval beneath the tentacles, is un- 

 coloured. Lower down it has short longitudinal streaks of reddish brown, corresponding 

 to the tentacles in position, the streaks corresponding to the external row of tentacles 

 being broader than those opposite the intermediate ones. The streaks are absent 

 opposite four of the tentacles of the external row. Thus, passing round the body, are 

 seen a colourless space, then three coloured streaks, then another colourless space, and 

 so on (fig. 14). The length of the specimen as obtained, when at rest and contracted 

 (fig. 12), was about 2'"5 centims. ; when fully extended, with the tentacles expanded, 

 about 4 centims. E. coriacea is allied to JE. beautempsis (M.-Ed. & Haime, Hist. Nat. 

 des Coralliaires, torn. i. p. 285) in having only 16 tentacles, but differs from it in the 

 fact that the tentacles are disposed in two series, in the details of colouring, and in the 

 structure of the test. 



This Actiniad was procured with the dredge from 600 fathoms off Cape St. Vincent, on 

 January 16th, 1873. It was closely contracted when found in the dredge, but expanded 

 on being placed in fresh sea-water, and lived several days. 



Coballimorphtjs, gen. nov. 

 Characters. — Body rigid, smooth, gelatinous, not contractile, without pores, but with 

 an adherent base; disk circular and large; tentacles non-retractile, elongate, conical, 



