34 Annelida CJioetopoda 
115 males ; they were simply dipped up with a scoop-net, 
indiscriminately, no attempt being made to collect one 
form rather than the other. 
Immature Female. Some specimens dug at low water, 
July 21, had their bodies well filled with eggs, but were 
otherwise unchanged, save that the bases of the feet were 
swollen and elongated. 
Color : above pearl-gray, beneath, darker, in some cases 
light purple. Feet white. 
Adult Male. Taken with female. Specimens very 
numerous, as noted above. The 5th, 6th and 7th dorsal 
cirri are longer and larger than the others. This is par- 
ticularly the case with the 7th (f 68). The 8th cirrus is 
normal (f. 69). 
Change in structure of feet begins on the 34th segment. 
The development of the membranous plates is better 
marked in the male than in the female. Those at the 
bases of the cirri are much larger, and the circular plate 
on the lower ramus is very large (f. 67). 
Color : anterior segments pearl-gray. After the 33d 
segment, body and base of feet above and below, red ; tips 
of feet white. On each side of the body, both above and 
below, a narrow white line. Extreme posterior segments 
sometimes green, sometimes brassy, gleaming ; anal seg- 
ment with a crown of close set papillfe. 
Nereis Dumerillii Aud. and M. Ed. 
Atjd. and M. Ed. Ann. des Sci. Nat., vol. xxix, 1833, p. 218, pi. xiii, figs. 
9-12. 
(For full description, synonomy, and figures see Elilers, Borstenwilrmer, 
p. 535 ; also Claparede, Appendix Ann. Cbet. du G. de N., p. 44.) 
Three specimens were found, all more or less injured, 
but certainly belonging to this species. Dredged. 
