the bristles and the hooks laterally are two rows ; whilst, 

 ventrally, there are four nearly equi-distant rows anteriorly ; at 

 the end of the anterior third are six rows, and these continue to 

 the posterior region. These papillae are readily recognized by 

 their darker colour, the general surface of the body being pale 

 brown. When the investment is removed, the body becomes 

 flaccid — demonstrating that its comparative rigidity is due to 

 this coat. The uniform arrangement of the small grains on the 

 ventral surface and sides and their general effect, together with 

 the addition of the larger translucent grains to the dorsal 

 surface (to which, indeed, they were confined), showed dis- 

 crimination and care on the part of the Annelid. 



The snout bears two grooved tentacles, and a dense tuft of 

 branchiae superiorly on each side. The latter are more 

 numerous and more slender than in the common European 

 species {Trophonia plitiuosn), and they arise from the ventral 

 aspect of a tongue-shaped triangular process, which projects 

 upward and forward on each side from the upper lip. Each is 

 marked, in extrusion, on the dorsal surface by a line of dark 

 pigment just within a pale margin. The processes appear to 

 fuse along the middle line, though a deep groove exists on the 

 ventral surface. Ventrally, the branchiae are closely arranged, 

 and in somewhat regular rows. Each has an afferent and art 

 efferent vessel. In the central line in front of the mouth is a' 

 longer papillae, which may be bifid, each division being slender. 



One example had the body-cavity tilled with dark green ova, 

 as in the case of the " Challenger " example, which was obtained 

 in December. Another appeared to have masses of sperms in 

 the same cavity. 



The genus is probably identical with Stylnividcs, Delia Chiaje. 



Flabelligera luctatok, Stimpson, 1856. 



1856. Tecturella litctator, Stimpson. Proc. Nat. Sc. Philad. 



vii., p. 391. 

 1861. Plicnisa tcinLgoua, Schmarda. Xeue wirb. Thiere, i., 



li., p. 20, Taf. XX., lig. 168. 

 1889. Flabelligera litctator, Marenzeller. Zool. Jahrb. iii., p. 



15 (sep. abdr.). 



Found between tide marks at St. |ames's, in False Bay. 



A form somewhat fusiform in outline and ranging from 30 

 to over 50 mm. in length, and with a breadth at its widest part 

 of 5-6 mm. It is of a firmer consistence than the ordinary 

 Flabclligerit alj'iiiis, and thus its habitat probably differs. 



The tentacles are of considerable len<fth and frilled m a 

 characteristic manner. As a transparent object a series of club- 



