128 
KICHARD ASSHETON. 
and two buds; one of these is well advanced. The fi;^ure 
shows the way in which tlie lophophore expands and the 
small tentacles spread out, though always slightly curved 
inwards. The four oral tentacles are usually moved together 
and often thrown back as in the act of jumping. None of 
my specimens, nine in number, had more than two buds. 
The stalk is shorter than in L. loxalina, and the foot is 
slightly larger, but resembles the foot of L. loxalina with 
its toe-like organs very closely. I think there are twelve 
to sixteen of these organs. 
Alimentary Canal. — The general character of the ali- 
mentary canal is indicated by the figs. 11 and 12. It diffei-s 
from that of L. loxalina only in the greater size of the 
distal, more ventral diverticula, which are the most pigmented 
parts, the long cells being filled with yellow granules. Fig. 1 1 
is a slightly oblique section which passes through the 
oesophagus and the edge of one of these thick-walled diver- 
ticula, which are composed of elongated cells with the 
nucleus at the outer end and loaded with spherical yellow 
inclusions (figs. 11 and 22). I think the gut lining is 
throughout a single cell in thickness which cell« vary greatly 
in length. The oesophagus opens into the stomach low down 
-on the anterior face. As in L. loxalina, the anterior and 
posterior walls contain granules of dark colour, but they are 
of a deeper brown and less refractive than in the former 
species. The intestine leads from the stomach by a gradual 
narrowing of that organ, but along the whole dorsal wall of 
the stomach there is a groove (which is continuous with the 
lumen of the intestine) of low ciliated epithelium. This in its 
turn is continuous with the conical lower apex of the stomach 
and with the entrance of the oesophagus, all of which is 
ciliated. The only parts not ciliated are the four glandular 
tracts. The longest cilia are in the oesophagus and at the 
entrance of the oesophagus to the stomach. Figs. 11 and 12 
illustrate the character of the epithelium of the apex of the 
stomach, where it is low, columnar (and 1 think really ciliated) 
with a few mucous glands {mu.). The section also shows the 
