76 
AUSTRALASIAN ANTARCTIC EXPEDITION. 
At the hinder end, too, I was unsuccessful in detecting anal cirri—it is merely 
covered with the papillae (fig. 84). 
On the body generally, so far as it is possible to make out in the flattened 
condition, the papillae have the following arrangement :—On the ventral surface there 
are about five longitudinal rows of papillae, somewhat smaller than those that cover 
the dorsal surface. Many of them are tinged with black, as if a secretion had been 
affected by the osmic acid. 
Between the successive parapods are two papillae in a longitudinal row. Above 
them the papillae seem to be arranged roughly in 12-15 rows, judging from the number 
on the exposed portion of the body—I admit there is room for error here. I have figured 
a short portion of the body wall at about the middle of the animal (fig. 85). Along the 
dorsodateral edge the papillae are seen lying close together in a row ; there are no definite 
“ small ” and “ large ” papillae, though they are not all quite of the same size (fig. 86). 
At any rate the definite alternation, such as occurs in S. parvum (Ehlers (1913), p. 504) 
and S. minutum (Webster and Benedict) does not exist here. 
From the edge I can trace transverse rows to the parapods, some three or four 
papillae in each row ; these rows are alternately in line with and between the parapods, 
and are at about equal distance apart; those in the parapodial or mid-segmental row 
are perhaps a little larger than the others, but the difference is not at all well marked 
Also, those in any row that lie nearer to the parapods are slightly smaller than those 
more dorsally placed. The successive rows tend to alternate with one another in 
position, though this does not seem absolutely constant, while here and there amongst 
the others, are a few distinctly smaller papillae. 
The parapods are rather narrow, truncated cones, carrying one, or occasionally 
two, of the smaller papillae on the dorsal surface near the base (fig. 86). One of the 
lips, the anterior I think, is produced into a rounded process, not unlike a papilla, 
but its contents are not cut off by cuticle from the underlying material. 
I cannot see any cirri. Each parapod is supported by a single colourless aciculum, 
the apex of which just reaches the surface, and carries about six long colourless jointed 
chsetae, the appendix of which is very thin, scarcely hooked terminally, with a thin blade 
in which I can detect no striations (in Canada balsam). The appendix is not unlike 
that figured for S. parvum, but is rather shorter (fig. 89). 
In the unstained specimen the pharynx is visible, its chitinous lining being 
outlined by black. It is wrapped round by a coat of muscle, increasing from each end 
to a considerable thickness in the middle. It occupies the second and third chsetigerous 
segments, i.e., its entrance is behind the first bundle, its hinder end a little in front of 
the fourth bundle of chsetao (fig. 83). 
Around its entrance are some glands, deeply tinted black. The apparatus 
resembles a “ pharynx,” such as occurs in various families, rather than a “ proventriculus” 
or “ stomach ” of the Syllidse. 
