G(dhj Marine Lahoratorij, St. Andrews. 'M 



intense being inferior and ^vliieli is toned down to the wliitc 

 collar. Two white belts separate the three brown banrls and 

 varions white touches enliven the beautiful fan. Dal\ ell's 

 specimens were variegated with different shades of brown and 

 yellow, and he mentions one with snow-white plumes located 

 inside an old oyster-shell. 



The bod;/ is moderately elongated, but in contraction almost 

 elliptical, and attains a length of | to .2 inches, and has fifty- 

 eight well-marked segments, of which 5-7 are anterior. It 

 is rounded on the dorsal surface and devoid of any anterior 

 groove, slightly flattened ventrally, and with a median groove 

 from the posterior border of the ninth bristled segment to 

 the tail, Avhere the terminal anus has two slight Literal 

 ])apill<e. The ventral surface from the collur backward has 

 in each segment a glandular scute. These occupy the 

 middle of the anterior region. The long rows of hooks 

 occur at the sides, and they continue of similar breadth to 

 the posterior end. After the ninth they arc split in the 

 mid-ventral line of the groove, and in some a faint line runs 

 from the collar along the middle of the anterior segments. 

 'I'iie body is of a madder-brown or dull red colour in some, 

 with white specks both dorsally and ventrally (orpiment- 

 orange, Dahjell). In others it is dull oiange w'ith oulv a 

 few whitish grains on the collar, or of a light orange hue — 

 rendered dark here and there by the ir.testine, whilst the 

 lobes of the collar are speckled with minute dots of white, 

 and two white papillre occur at the anus, or a white patch in 

 front of it. Young examples between tide-marks in Guernsey 

 and Herm are yellowish green, with the dark specks at each 

 foot. A bold dark brown speck occurs at the ventral cd<'-e 

 of each setigcrous process in the anterior region, the 

 nncinigerous ridge commencing behind it. At the ninth 

 bristled segment a smaller speck is situated rather behind 

 the setigcrous process dorsally, and at the commencement 

 of the nncinigerous row, and so to the posterior end of the 

 annelid. In one from ]Malahide the collar had many minute 

 brown specks. The alimentary canal connnences at the 

 niouth as a wide, though translucent, membranous tube 

 marked by transverse striie. About the middle of the body 

 it becomes narrower and thicker with powerful and rather 

 course transverse fibres and some delicate longitudinal 

 muscles. The dissepiments support the canal in every seg- 

 ment, and thus it assumes a moniliform aspect, or occasionally 

 resembles a coiled spring. 



The first setigcrous processes are nearer each other than 

 the succeeding, since the line of the biistlcs anteriorly 



