NEREIS. 155 
dark belts crossing the back, on a greenish-yellow broader predominant 
line. 
This is a beautiful animal, somewhat akin to the preceding. Rare. 
PLaTE XX. 
Fic. 7. Nereis ellipsis. 
8. Anterior extremity, enlarged. 
9. Section of the body, enlarged. 
10. Posterior extremity, shewing the terminating organs, enlarged. 

§ 9. Nereis rungens—Jridescent Nereis ——Neruis des Beaucondray, 
Andouin, et Edwards ?—Plate XXII. Figs. 6, 7, 8. 
Length above seven inches ; breadth, at the head, above four lines. 
Figure of the body roundish, consisting of above 100 segments. Anterior 
and posterior extremity, terminate each in a fork, the latter beg two 
slender bristles. The portion comprehending the head, is a smooth 
cylinder beyond the first segment of the body, with eight antennular 
organs, some of them apparently of two and three faint articulations, 
and two at the extremity ; besides which, are two stout conical organs, 
widely apart, tipped by a smaller soft spongy-looking substance. Eyes 
four, blue, set in a quadrangle. Colour of the body universally orpiment 
orange-reddish ; a darker longitudinal line, composed of so many short 
lines, one on each segment down the back. Belly lighter. The whole 
surface is finely iridescent, reflecting the prismatic colours, whence it may 
be conjectured that this is the Neves versicolor of nomenclators. I have 
never seen any specimens, of many taken in Scotland, with a tinge of 
green. 
Two black incurving jaws are seen within the orifice of the proboscis, 
the extremity projecting just beyond it. 
The whole body is bordered by a row of papillee, with a white sum- 
mit, generally three on each segment, from whence pencils or bristles 
issue. 
U 
