98 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
Fig. 15. Interior of the right side of the stomach. The 
stomach has been opened by a vertical section, 
a little to the right of the median line so that 
the median ventral tooth has been removed. 
The greater part of the cardiac region of the 
stomach is surrounded by a layer of connective 
tissue. (a./.t.) antero-lateral tooth; (d..) dorsal 
lamella; (hep.) hepatopancreatic tubule; (J.c.l.) 
lateral cardiac lamella; (/.c.t.) lateral cardiac 
tooth; (m.a.t.) median anterior tooth; (oes.) 
oesophagus; (v/.t.) ventro-lateral tooth; 
(v.l.p.l.) ventro-lateral pyloric lamella; (v.c.t.) 
ventral cardiac tooth. 
Fig. 16. Transverse section through the abdominal 
region. ‘The abdominal appendage of the left 
side is omitted. (ad. tiss.) adipose tissue cells ; 
(b.c.) body cavity (haemocoel); (br. neph.) 
branchial nephrocytes; (br. p.¢.) branchio- 
pericardial canal; (d.d.m.) dorsal longitudinal 
muscles; (epzm.) epimeron; (Ad.) heart; (enf. 
lam.) inferior lamella of gill; (dev. m) levator 
muscle of appendage; (mid. g.) mid-gut; (p.c.) 
pericardium; (sep.) septum forming floor of 
pericardium; (suwp.lam.) superior lamella of 
gill; (ty.) typhlosole; (vl. hep.) ventro-lateral 
hepatopancreatic tubule; (v. hep.) ventral 
hepatopancreatic tubule; (v.d.m.) ventral 
longitudinal muscles. 
Fig. 17. Transverse section of two of the rosette-like 
salivary glands. The left section shows the 
common duct (c.d.) of the glandular cells, 
formed by the uniting of the intracellular 
ducts (ic. d.); n.c.d. is the nucleus of the cell 
which probably forms the common duct. 
