TWO NEW SPECIES OF THE PHORONIDEA. 
259 
laature of tliis pigment will be considered later in relation to 
the vaso-peritoneal tissue. 
The lopliopliore is somewhat horseshoe-shaped, and is 
provided with about ninety tentacles; these varied in speci- 
mens counted from about 72 to over 100, but the average for 
ten fairly typical forms was 90'9. 
'I’he lophophore organ is absent — at least I have found no 
trace of it in the series of specimens (twenty-five to thirty) 
that I have examined ; this is probably due to the fact that 
the specimens were collected during the beginning of 
September, when practically all the generative products had 
been shed, and a brood chamber, as Gilchrist (7) supposes this 
organ to be, would no longer be required. 
Body-wall. — The epithelium is composed of tall columnar 
cells, except over the greater part of the ampulla, where 
they are almost cubical (Figs. 2, 3, 4). 
The glandular cells are numerous, and have three different 
contents : (i) very fine granules, (ii) much coarser spherical 
granules or globules, 2 to 3 in diaincter, and (iii) a 
homogeneous mucus, which may sometimes be seen pro- 
truding on to the surface, leaving the goblet cell below 
empty (Fig. 12, m. p.). All these contents are j-ellowish and 
refriugeut when unstained; they do not stain easily except 
witli iron-haemato.xylin. They are all found in the upper 
regions of the body as well as on the ampulla, in this 
resembling, according to Selys Longchamps ([14],p. 38), Ph. 
psainmophila and Ph. sabatieri rather than Ph. hippo- 
c r e p i a . 
The pro.xinial region of the ampulla is covered with very 
long columnar cells, interspersed with numerous glandular 
ones, whereas Ph. australis has no glandular cells, or very 
few in this position (Benham [2],p. 11). These long epidermal 
cells extend for a short distance up the sides, and gradually 
merge into the typical cubical epithelium covering the 
ampulla. The proximal body-wall is often invaginated to form 
a pit, but this is by no means always the case, and in one 
that had a convex, proximal end I found in longitudinal 
