142 
lilCHAHD ASSHETON. 
the other one (g. d.) is a duct which leads from the group of cells of 
figs. 3 and 4 to the space between the epistome and the lophophore. 
Fig. 6. — L . 1 oxalina. A section taken horizontally through a gonad 
ig.) and a curiotis row of cells (fc.), which are probably not connected 
with the gonad, hut are of the nature of an excretory organ. These 
large vacuolated cells bear some resemblance to those of the excretory 
nephridium of L. crassicauda (v. Harmer). 
Fig. 7. — L. saltans. Horizontal section cutting through the epi- 
stome and lophophoral kidney. The two fine kidney ducts are seen cut 
obliquely as they pass towards the epistome. 
Fig. 8. — L. saltans. A section through the lophophoral kidney, 
which is seen to consist of several large, much vacuolated cells closely 
pressed together and bounded by a capsule. 
Fig. 9. — L. saltans. Transverse section through the ati'ium 
passing through oesophagus, intestine and papilla upon which the 
oviduct opens. 
Fig. 10. — L. saltans. A figure drawn from a living specimen to 
show the way in which the lophophore and tentacles are carried. 
The four long tentacles usually work together. The fine stiff hairs, 
used either as touch sense-cells or grasping organs, are seen on these 
four tentacles. The specimen bore one well- developed bud, one rudi- 
mentary one, and two of the peculiar “ flask ’’-like ectodermic organs of 
unknown function. One of these is shown in the figure. 
Fig. n.-L. saltans. — A slightly oblique section which passes 
vertically through the oesophagus, one nerve ganglion, one “ liver ” 
diverticulum, hut misses the rectum. The character of the liver-cells 
containing many granules is seen. 
Fig. 12. — L. saltans. A horizontal section through the pancreatic 
diverticulum and stomach. The cells of the wall of the stomach are 
really ciliated, except the mucus-producing cells (mu.), but not the cells 
of the glandular diverticulum. 
Fig. 13. — L. loxalina. Part of the foot shows the large rod-like 
cells which project beyond the general margin as either adhesive or 
supporting elements. 
Fig. 14. — L 0 X 0 soma saltans. Transverse section through the 
brain, oesophagus, and intestine, the brain consisting of two ganglia 
connected by a thick band of nerve-fibre. Between the brain and 
oesophagus lies the ovary, consisting of a single follicle containing a 
single oocyte. On each side the body-kidney is seen in section. 
Fig. 15. — L. saltans. A section taken through the base of one of 
the pedunculate ectodermal organs, which consists of four modified 
ectodermal cells contained within a capsule of ordinary cells. 
