A guide to the shell and starfish galleries

One of the large north galleries approached from the Bird Gallery is devoted to the exhibition of the extensive Class of Mollusca. Specimens of the types of all the principal di...

The _Acmæidæ_ are called False Limpets, because, although the shells are identical with the true Limpets, the animals differ in having only a small gill on the left side of the...

The Sea-Hares, so called on account of a slight resemblance to a crouching hare and not for their nimbleness of foot, are found in most parts of the world, in pools at low water...

In this order the gills have interfilamentar and interlamellar _vascular_ junctions, and there are generally two adductor muscles. The order is very extensive, comprising nearly...

From a casual glance at the contents of these cases, it might be supposed that many of the specimens exhibited therein were seaweeds; but a closer inspection, especially with a...

_Lophopus crystallinus_(*) occurs in the form of translucent gelatinous blobs, often attached to the slender stems of duck-weed. The statoblasts (Fig. 21, C) are elliptical and...

The tadpole of an Ascidian resembles that of a frog (Figs. 8, 9), not merely superficially, but also in its general structure and mode of development. The Tunicata are now gener...

In the STARFISH GALLERY is exhibited a series of the animals belonging to the class _Echinoderma_; of these the Starfishes are the best known, while others are the Sea-Lilies, S...

Of all Nematodes the most dangerous to man is the small worm which is known as _Trichina spiralis_ (Fig. 18); a series of models are shown which give a good idea of the structur...