HOYLE: REPORTS ON THE CEPHALOPODA, 19 
biserial (Fig. 5). The question might arise whether these examples belong to 
the genus Moschites (Eledone), the uniserial being normal and the biserial due 
to contraction, or whether they are a species of Polypus (Octopus) in which the 
uniserial arrangement is gradually becoming biserial. I have no hesitation in 
adopting the latter view, because the animals are undoubtedly young, as shown 
by the presence of the yolk sac, and because, as I have elsewhere remarked, 
(86, p. 76) the suckers in the genus Polypus are not, strictly speaking, in two 
rows, but in one zigzag row. Iam not aware whether this point has been 
established by an examination of embryos, but the present series of young 
examples seems to indicate that the suckers are first formed in a single series 
which press each other sideways so as to form two rows as they become more 
crowded, 
It is quite impossible to decide as to the species to which these specimens 
belong. From the size to which they have attained before losing the yolk sac 
it is likely that they are the young of some large species, perhaps one hitherto 
undescribed. I give below a description, to facilitate the clearing up of this 
point at some future date. 
The Body (Figs. 3, 4) is ovoid, distinetly longer than broad, and the ventral 
groove is well marked. The mantle-opening is narrow, extending only about 
one-fifth round the body, and ending directly below the centre of the eye. 
The siphon is tapering and extends from one-third to halfway to the umbrella 
margin, according to its state of contraction. 
The Head is short and narrow, distinctly narrower than the body, and the 
eyes are round, black, and prominent. 
The Arms ave sub-equal and conical, tapering to blunt extremities. They 
are about equal in length to the head and body together; round in section ex- 
cept for the projection of the suckers. The umbrella extends about one-third 
up the arms. The suckers are small and closely set, and the arrangement va- 
ries between a biserial and a uniserial disposition as above described. 
The Surface of the dorsal half of the body, head and arms, is finely granular, 
the inferior half smooth. 
The Mantle is attached to the middle line ventrally by a broad ligament, 
4 mm. wide, close to its free border, The edge of the mantle is turned over 
and thickened internally just within the free border so as to form a kind of 
ridge, which fits into a corresponding hollow in the base of the siphon (Fig. 8); 
this arrangement no doubt serves to insure the complete elosure of the mouth 
of the mantle when water is being ejected throuzh the funnel. 
The Radula was extracted from one of the specimens and is figured on Plate 
5, Fig. 9. In the bending of the outermost teeth and the recurving of the 
parts of the inner laterals it seems to present signs of incomplete development. 
The centrals have a broad median cusp, tapering to an acute point, and on 
either side are rudiments of a small lateral cusp. The first and second laterals 
are triangular and pointed: the third laterals very long and slender and bluntly 
pointed. The irregular bending shown in the drawing is not, I think, a 
natural condition, 
