632 
THE VOYAGE OF H.M.S. CHALLENGER. 
complex manner and consisting of narrow segments with well-formed feet. The latter 
have dorsally a long and gracefully curved cirrus, a conical setigerous region with a few 
simple bristles, and interiorly a broad and stout ventral cirrus. The dorsal cirri are alter- 
nately longer and shorter, as in certain other forms, e.g., those described by Grube from 
the Philippines. The buds appear laterally, terminally, and wherever a broken surface 
occurs, and a diverticulum of the alimentary canal enters each. These buds on attaining 
a certain size give off other buds, so that the whole has a remarkably branched form. 
“ The tail of the bud (i.e., the distal part) is early formed, and soon presents two long 
cirri. N o head appeared in the examples from Zebn, but in a particularly broad bud, on a 
specimen from the Flores Sea, a head occupied the free end. This bud came off at right 
angles, had shorter segments and a more distinctly moniliform alimentary canal. The 
anterior margin of the snout is depressed and carries on each side a slender cirrus, 
while another . appendage of the same kind occurs just in front of the eye. A sulcus 
separates this area from the more elevated one behind, the latter resembling a broad 
wedge with the eye on each angle anteriorly. The ocular pigment is dark red, the edge 
being somewhat irregular. The folds on the posterior margin of the head are symmetrical 
-and the nuchal border is clearly marked. Several female buds were found. The head in 
an attached example is bilobed and somewhat like the sexua] form termed Ioida by Dr. G. 
Johnston, having a large reddish brown eye on each side, and a still larger pair on the 
ventral surface. The head is terminated posteriorly by two short cirri and a setigerous 
process furnished with a spine. The entire fusiform body and the bases of the feet 
are filled with ova, showing germinal vesicle and spot. The anterior segments are 
provided with bristles of the same type as the parent stock, though the terminal 
appendage is more differentiated. An older (free) bud seemed to differ from the fore- 
going chiefly in the size of the ova (some of which appear to contain embryos), and in 
the presence of long translucent bristles with broad flattened tips (the c Pubertatsborsten ’ 
of Professor Langerhans). A fragment of the posterior end of a male also occurred. The 
feet have dorsally a convex margin, and the same outline exists ventrally at the base, but 
the edge slopes upward distally. A short dorsal cirrus of a few segments is present, 
and beneath it a tuft of long straight translucent sword-shaped bristles similar to those 
in the female bud. The body contained a large number of granules and masses, 
apparently of spermatozoa. 
“ In no group of the Annelida is budding more conspicuous than in the Syllidse. 
The linear division of Autolytus and Procercea, the lateral buds of Exogone, and the 
ease with which .heads and tails are reproduced, are examples ; but the foregoing 
( Syllis ramosa ) marks a new era in the invertebrates, for the branches occur as freely as 
in a hydroid zoophyte, and the open ends of the ruptured alimentary canal would seem 
to be sufficient for the nourishment of the various parts. In connection with this subject 
the slightly branched tubes of Eunice magellanica form an interesting feature, since they 
