126 MR. W. E. HOYLE ON TIE [Mar. 5, 
Enoploteuthis. The medio-lateral teeth are shorter and less acute 
than in either of these forms. 
The Anterior Salivary Glands are present and lie in the form of 
two ramified glands packed away in the floor of the mouth, Their 
openings are situated one on either side of the median elevation 
which forms the floor of the mouth anterior to the radula. 
The Posterior Salivary Glands are in contact with the inferior 
surface of the cesophagus, and slightly overlap the cephalic cartilage ; 
they form a pyriform mass, the pointed extremity being directed 
backwards. The entrance of the duct into the cesophagus was not 
made out. 
The Gsophagus (Plate XIII. fig. 4, @) is very slightly fusiform just 
behind the central nervous system; but it cannot be said that a 
crop is formed unless the expansion were very much greater than in 
the examples examined. Another fusiform portion is seen just before 
it opens into the stomach. 
The Stomach (s) is simple and saccular, more elongated in the larger 
specimen than in the smaller. In one of the examples from the 
Narwhal’s stomach there was a chitinous lining, which had become 
completely detached. It appeared to have formed a coating over 
the whole inner surface of the organ, and is much thinner at the 
posterior extremity than it is a little way behind the cesophageal 
opening. There were, however, no dentiform prominences such as 
I hope to describe elsewhere in an account of the genus Taonius. 
In the same instance it contained a quantity of fragments of Crus- 
taceans, but not one of them was large enough to give any chance of 
specific determination. 
The Rectum (7) as usual leaves the stomach close to where the 
cesophagus enters it, and about the same point is the opening of the 
cecum. It presents no noteworthy features. 
The Caecum (c) lies upon the anterior part of the ventral aspect 
of the stomach, somewhat towards the right. It is coiled into a 
complete spiral and presents a striated appearance which seems to 
be due to a series of folds in its ling mucous membrane. 
The Digestive Gland (d.g., “liver”’ of various authors) is large 
and ovoid and has the usual relations. The structure usually known 
as “pancreas”’ (pan.) is situated in the angle between it and the 
ceecum and cesophagus. 
VIII. Circulatory Organs. 
The Heart (Plate XIII. fig. 3,v) is broadly pyriform in shape, the 
anterior end being somewhat narrower than the posterior ; it is directed 
as usual almost antero-posteriorly, the anterior end being turned a 
little towards the right. At two opposite points in its largest dia- 
meter the heart receives the branchial veins (7.v), which as usual pass 
along the anterior or free side of those organs. There are only two 
aortic apertures to the heart, which are situated at its anterior and 
posterior extremities (a.ao, p.ao); the former gives off the cephalic 
aorta, quite in the ordinary manner. As regards the vessel from 
