supporting lamella
supporting lamella
supporting lamella
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506 W. B. HARDY.<br />
Myriothela is that of Professor Allmann, which was published<br />
in the 'Phil. Transactions ' in 1875. This was followed by a<br />
long monograph illustrated with abundant figures, and published<br />
at Moscow (3) in 1880, unfortunately in Russian, by<br />
Korotneff, who was the first to study Myriothela with the aid<br />
of properly prepared sections.<br />
In 1881 Korotneff published a further paper dealing with<br />
the same subject (4). A copy of this I have unfortunately<br />
not been able to obtain. The further literature of the subject<br />
will be referred to as occasion demands in the following pages.<br />
The work was carried out partly in the Marine Biological<br />
Laboratory at Plymouth, and T am grateful for the many kindnesses<br />
experienced there. But the bulk of the work was done<br />
in the Morphological Laboratory of Cambridge University,<br />
and I would here thank Mr. Sedgwick for placing the resources<br />
of his department at my service.<br />
The general structure of Myriothela will be best learned<br />
by reference to Allmann's monograph, and to that I must refer<br />
my readers, merely stating here that it is a solitary attached<br />
hydranth. The proximal part of the body is usually bent at<br />
right angles to the rest, is covered with a thick perisarc, and<br />
gives origin to short processes by which it is attached to the<br />
under side of large stones. The perisarc of the foot is represented<br />
over the rest of the body by a delicate cuticle. Following<br />
on the foot is the middle region of the body, whence spring<br />
numerous blastostyles. Each of these bears gonophores, male<br />
and female, on its proximal portion, while short capitate tentacles<br />
spring from the distal extremity. The blastostyles are<br />
without a mouth.<br />
The distal or oral region of the body of the hydranth is the<br />
longest, and is studded with very numerous, small, capitate<br />
tentacles to within a short distance from the mouth.