8 Prof. M'Intosli's Notes from the 



Chlorccmidne, was ohscrvod in cither dorsal or ventral tufts, 

 and their thiu-wallcd condition is noteworthy. 



Trophonia saj'si, sp. u. 



Dredf^cd by the 'Challenger* at Station 156, near the 

 Antarctic Sea, 26th February, 1874, lat. 62° 26', lonpr. 

 95° 44'', at a depth of 1975 fathoms in Diatom ooze. This 

 form is one (of not a few examples of the Polychiicts) in 

 this great Expedition which has apparently not come under 

 tlie specific instructions for the preservation of marine 

 Invertebrates, since only fragments of skin, a piece contain- 

 ing several pulpy segments, pieces of the intestinal canal, and 

 the proboscis indicated the specimen. Thus it was put aside 

 for greater leisure tliau could be alToi'ded for the i)reparatiou 

 of the ' Challenger,' vol. xii. It seems to have been an 

 annelid of some size, probably 2 inches or more in length, 

 and with a breadth at least of 3 to 4 mm., the skin at the 

 feet bearing numerous long clavate papillae with slender 

 stems ending in bulbous tips, and the body appears to have 

 been more or less flattened posteriorly. So far as can be 

 ascertained from the pulpy fragments, it seems to be a 

 Chlorcemid, but diverges in several particulars from any 

 known form. 



A.S only fragments of skin and loose bristles or separated 

 groups of bristles were available, it was not easy to apportion 

 these to their respective sites — indeed, a certain ambiguity 

 still remains in this connection. It is not possible to say 

 whether the longer anterior bristles formed a cage as in 

 Trophonia plumusa and allied forms, as nothing in the 

 preparation indicated such. What appeared to be dorsal 

 tufts consisted of somewhat slender, smooth, translucent 

 bristles (PI. III. fig. 3), tapering from the base almost imme- 

 diately to a long, fine, hair-like point. The inferior division 

 of the foot contains no less than three kinds of bristles. 

 The most conspicuous is a group of much elongated, slightly 

 golden bristles (PI. III. fi;;-. 4 o) with thin walls like those 

 of Brada (jravieri which stretch far outward from the foot, 

 and which are easily bent and broken like those of the 

 species just mentioned. The base is broad and apparently 

 flattened, and they taper almost from this distally and end 

 in a delicately tapered point. Some isolated bristles of this 

 kind were much larger and longer than the example sketched, 

 but the region to which they belonged could not be ascer- 

 tained. The largest, like those of Brada gravkri, were apt 

 to collapse in Farraut's solution and present a keel. Some 



