ANNELIDANS. 347 



most Annelidans are locomotive organs, in Ly- 

 coris y Phyllodoce, and some other Nereideans 1 

 become a kind of tentacle. The marine Scolo- 

 pendra of Aristotle most probably belonged to 

 this Order, and many species make a near ap- 

 proach to the terrestrial ones. 2 Like them they 

 are long and often flat, consisting of a great num- 

 ber of segments, some having between two and 

 three hundred, furnished according to the spe- 

 cies, with one, two, or three pairs of legs in each ; 

 like them also they twist about in all directions 

 when handled, they conceal themselves in close 

 places where they lie in wait for their prey. In 

 one respect some of them add the instinct of 

 the spider to that of the centipede, for they line 

 and sometimes cover the cavities of the rocks 

 which they inhabit with a slight silken web, and 

 thus concealed they watch the approach of some 

 animal, and, suddenly thrusting out the anterior 

 part of their body, seize and devour it. 



My late indefatigable and talented friend, 

 the Rev. L. Guilding once found a land species, 

 in an ancient wood in the Island of St. Vincent's, 

 which from its soft body he regarded as a Mol- 

 luscan, but from its figure, and annulose struc- 

 ture, its jointed antennae, and seemingly jointed 

 legs crowned with bristles, it 3 certainly belongs, 

 as Mr. Gray has remarked, to the present class. 



1 Savigny, Syst. des Annel. 9, 12, 13. 



2 PLATE VIII. FIG. 4. 



3 PLATE VIII. FIG. 1. Mr. G. calls it Peripatusjulifvi mis. 



