Fossil Fish and Marine Worm. 8*7 



deeper water as far south as New England, according to 

 Jordan, who creates for it a new genus (Artediellus). J 



The total length of the specimen, without the caudal fin 

 which is absent, is 4 inches, of which the head measures 

 one inch. It belongs to the collection of Mr. Stewart. The 

 other and less perfect specimens, which I refer to the same 

 species, are in the Peter Eedpath Museum. 



Nereis, Sp. 



Among the specimens submitted to me by Mr. Stewart are 

 two that represent remains of marine worms, but not suffi- 

 ciently perfect for determination. Their study has, however, 

 induced me to re-examine some specimens of this kind collect- 

 ed some years ago and now in the Peter Redpath Museum, 

 and one of these affords some characters which it may be 

 useful to describe. 



It resembles at first sight a whitish stripe of calcareous 

 matter about four inches in length and scarcely two lines 

 in breadth. This strip of calcite is a longitudinal section 

 through the body of the worm, and shows nothing of its 

 external characters, and the somites of the body are indi- 

 cated only by the tufts of brown bristles or setae at intervals 

 along the sides. In the specimen in question, these are in 

 the middle portion of the body from a tenth to a twelfth of 

 an inch apart. On the anterior segments they are closer 

 together, the body having apparently been contracted in 

 that part. Each foot, as indicated by the Betse — the soft 

 parts having entirely perished — seems to have had one 

 strong spine and several others very fine and hair-like in a 

 separate bundle. When disengaged from the matrix (which 

 can easily be done by treating a small portion with diluted 

 acid) and examined microscopically, they seem to be simple, 

 nearly straight and pointed. Near what seems to be the 

 anterior extremity, are obscure indications of one of the 

 horny mandibles. These characters, as far as they go, would 

 indicate a chtutopod worm or " sea centipede," and, of the 



1 Catalogue of Fishes, Fish Commission Reports. 



