9634 Annelides. 



and three inches in length ; in this state it is not more than the eighth 

 of an inch in diameter ; when at rest it is about five or six hnes. 

 South coast of Devon ; rare. 



C. ascarides, Mont. MSS. p. 231. Body long, linear, white, with a 

 square black spot close to the anterior end. Length one inch. Coast 

 of Devon. I have placed this here provisionally, as Colonel Montagu 

 had not made a sketch of it, and his description is too brief to recognize 

 the genus to which it belongs ; it is placed by him in section " eyes 

 none." This notice may perhaps draw the [attention of] naturaUsts 

 to it again. 



Sub-Order II. Teretclaria, Blainville. 

 Genus Astemma, Oersted. 



J.Jiliformis, Johnst. (P. Gordius, Mont. MSS. p. 231). Long, fili- 

 form, yellowish with two white spots at the anterior end, and a white 

 dorsal line. Length an inch, size of a bristle. He then goes on to say 

 that " From the proportional length of this species it is somewhat allied 

 to P. Gordius, but it is rather compressed, and its motion is smooth 

 without contortion ; from this we seem to think it belongs to Planaria. 

 It is observed sometimes to inflate its body in the middle, which it 

 gradually pushes forward towards the anterior end." A variety some- 

 times occurs, of a pale rufous-colour, having a broad white dorsal line. 

 A very long white filiform tongue or proboscis is occasionally darted 

 out with great velocity and retracted very slowly." South coast of 

 Devon. 



In uniting A. filiformis with Montagu's P. Gordius I am not quite 

 sure that I am right; these creatures undergo so many changes of 

 form that different observers might be led to arrive at different con- 

 clusions. 



Genus Cephalotrix, Oersted. 



C. tmipunctata, Mont. MSS. t. 55, f. 5, p. 236 (Planaria unipunctata). 

 Pale yellowish white, with a lunate black spot before the eyes, the 

 concave part of the hina in front. Body filiform, gradually growing 

 thicker towards the head ; eyes black and rather distant. Length 

 nearly an inch. Marine, Torcross ; rare. This appears to be a very 

 distinct species. 



Genus Omatoplea, Diesing. 

 O. oculalxis, Mont. MSS. p. 274 (Linens oculatus). Body sub- 

 depressed, brown with pale margins, and furnished with twelve eyes. 

 The colour is usually pale yellowish brown, with light margin ; round 



