10 
Prof. R. Owen on the Anatomy 
and fore part of the salivary gland (< 7 ), and includes the two 
ducts. The two lateral filaments (i) 1 could not satisfactorily 
trace ; they seemed to issue from or enter the hind part of 
the skull, and were either nerves or vessels. 
Dorsad of the ear-sacs (PI. II. fig. 6 , a, b) goes the gullet 
(k), which, beyond the skull, is crossed ventrad by the lower 
salivary glands (PI. I. fig. 11, g), and then passes, of slender 
dimensions, without trace of ingluvial expansion, into the 
interspace of the hepatic lobes ( l , l ). 
From each side of the gullet the pallial nerves (fig. 11, c) 
diverge to their ganglion ( d ). 
The oesophagus, which lies at the lowest (ventral) part of 
the hepatic interspace (PI. III. fig. 2 , a), after a course of 
5millims., expands into the stomach (&), which is small. The 
duodenum, leaving the stomach, communicates near the pylo¬ 
rus with the second or pancreatic stomach (c), which was 
larger than the first. A large mass of pancreatic follicles (cl) 
communicate with the second stomach. 
The intestine ( e ) bends about 2 millims. obliquely back¬ 
ward, then turns abruptly forward and becomes “rectum” (_/’), 
which is 4 millims. long. The rectum is enveloped in a 
loose mesorectum. There are no anal appendages. In the 
angle of the last intestinal fold lies the ink-bag (h), the duct of 
which goes forward to pierce and terminate within the infun¬ 
dibular anus. This glandular bag is pyriform, scarcely 
2 millims. in length; it lies close to and is connected with the 
urocardial capsule. 
The superior salivary glands (PI. I. fig. 10, o) are oblong- 
flat bodies, applied one on each side of the basal or faucial 
folds of the tongue (s ). 
The posterior salivary gland (PI. I. fig. 11 PL II. fig. 4, </, 
& fig. 10) appears to be single; it is deeply grooved along the 
middle of its dorsal aspect, and deeply notched on each side 
by the lateral pallial nerve-trunks. Viewed from behind, the 
posterior salivary glands are seen to be a pair, subtriangular 
in shape. The white, flat, filamentary ducts of these glands 
run forward on each side of, and close to, the gullet, enveloped 
and supported by the same cellular oesophageal envelope. 
The liver is not single as in Octopus , but consists, as in the 
Decapods, of two symmetrical lobes (PI. I. fig. 11, l, l; PI. II. 
fig. 4 , Z; PI. III. fig. 2 , l, l). These are of an elongated 
subtriangular shape, with the base turned forward, as viewed 
from the ventral aspect. Each is invested by a glistening 
capsule. The fine muscular web connecting or passing be¬ 
tween the “ retractores ” or “ crura infundibuli ” is spread 
over the two oblong lobes or divisions of the liver. When 
this sheet is removed the lobes are seen to be invested by a 
proper musculo-membranous sheath. The fibres of the seem- 
