328 Dr. Johnston's Contributions to the British Fauna. 



4. L. MINUTUS. 



4. L. '•^ riihiciindus ; cingulo elcvato pallido fere medio ; venire 



bifariam aculeatoy 



Lamarck, Hist. Nat. v. 299. " Fabr. Faun. Groenl. 

 p. 281. /. 4." 



Hob. Sea shore, under stones and at the roots of Fuci, common. 



Desc. Body filiform, slender, slightly attenuated at both ends 

 which are alike, one inch long, reddish, the colour proceeding 

 from a tortuous vessel shining through a transparent skin. On 

 each side of each segment is a small fascicle of short seta only 

 occasionally extended. When magnified the sides appear minutely 

 crenulate. Towards the middle is a broad ring distinguished 

 merely by its lighter colour. 



I have not the Fauna Groenlandica to refer to, but so far as [ 

 remember, the figure will answer for our species, which appears 

 to us to be decidedly the same as that of Fabricius. 



5. L. LITTORALIS. 



5. L. ruber aut rubro-maculatuSyJiliformis; aculeis uniscrialibus, 



fasciculaiis, retractilibus. 



L. ciliatus I MuUer, Venn. I. ii. 30. 



Ilab. Sea shore, under stones and at the roots of Fuci, not 

 uncommon. 



Desc. This species is very slender in proportion to its length. 

 The Bodi/ is rather more than an inch long when contracted, but 

 capable of being drawn out to nearly six times that length, filiform, 

 somewhat attenuated at the extremities, distinctly annular, with 

 a minute tuft of retractile setee on each side of every segment. 

 The colour is a uniform red, but it is broken when the body is 

 in a state of extension, and becomes pale or spotted. The animal 

 is contractile, and frequently thrown into partial swellings. 



In his description of the L. cilialus, Muller says there are four 

 fascicles of bristles at each ring ; but the difference in our de- 

 scriptions may arise not from a difference in species, but from the 



