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glaucus-or the wonders of the shore(鯉斥互帽)-及49何蛍
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to contract into a more flattened form。 When fully expanded�察 �its
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transparent and lengthened tentacles present a beautiful appearance。
Fig。 3 A�察 �showing a basal disk�察 �is given for the purpose already
described。
BALANOPHYLLAEA REGIA。 PL。 V。 FIG。 1。
Another species of British madrepore�察 �found by Mr。 Gosse at
Ilfracombe�察�and by Mr。 Kingsley at Lundy Island。 It is smaller than O。
Smithii�察�of a very bright colour�察�and always covers the upper part of its
bony skeleton�察�in which the plates are differently arranged from those of
the smaller species。 Fig。 1 shows the tentacles expanded in an unusual
degree�察�1 A�察�animal contracted�察�1 B�察�the coral�察�1 C�察�a tentacle enlarged。
PLATE VI。
CORALS AND SEA ANEMONES。
ACTINIA MESEMBRYANTHEMUM。 PL。 VI。 FIG。 1 A。
This common species is more frequently met with than many others�察�
because it prefers shallow water�察 �and often lives high up among rocks
which are only covered by the sea at very high tide�察�so that the creature
can�察�if it will�察�spend but a short portion of its time immersed。 When
uncovered by the tide�察�it gathers up its leathery tunic�察�and presents the
appearance of fig。 1 A。 When under water it may often be seen
expanding its flower´like disk and moving its feelers in search of food。
These feelers have a certain power of adhesion�察�and any not too vigorous
animals which they touch are easily drawn towards the centre and
swallowed。 Around the margin of the tunic are seen peeping out
between the tentacles certain bright blue globules looking very like eyes�察�
but whose purpose is not exactly ascertained。 Fig。 1 represents the disk
only partially expanded。
BUNODES CRASSICORNIS。 PL。 VI。 FIG。 2。
This genus of Actinioid zoophytes is distinguished from Actinia
proper by the tubercles or warts which stud the outer covering of the
animal。 In B。 gemmacea these warts are arranged symmetrically�察 �so as
to give a peculiarly jewelled appearance to the body。 Being of a large
size�察 �the tentacles of B。 crassicornis exhibit in great perfection the
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adhesive powers produced by the nettling threads which proceed from
them。
CARYOPHYLLAEA SMITHII。 PL。 VI。 FIG。 3。
This figure is to show a whiter variety�察�with the flesh and tentacles
fully expanded
PLATE VIII。
MOLLUSCA。
NASSA RETICULATA。 PL。 VIII。 fig。 2�察�A�察�B�察�C�察�D�察�E�察�F
A VERY active Mollusc�察 �given here chiefly on account of the
opportunity afforded by the birth of young fry in Mr。 Lloyd's tanks。
The NASSA feeds on small animalcules�察�for which�察�in aquaria�察�it may be
seen routing among the sand and stones�察 �sometimes burying itself among
them so as only to show its caudal tube moving along between them。 A
pair of Nassae in Mr。 Lloyd's collection�察�deposited�察�on the 5th of April�察�
about fifty capsules or bags of eggs upon the stems of weeds ��fig。 2 B���察�
each capsule contained about a hundred eggs。 The capsules opened on
the 16th of May�察�permitting the escape of rotiferous fry ��fig。 2�察�C�察�D�察�E���察�
not in the slightest degree resembling the parent�察�but presenting minute
nautilus´shaped transparent shells。 These shells rather hang on than
cover the bodies�察 �which have a pair of lobes�察 �around which vibrate
minute cilia in such a manner as to give them an appearance of rotatory
motion。 Under a lens they may be seen moving about very actively in
various positions�察 �but always with the look of being moved by rapidly
turning wheels。 We should have been glad to witness the next step
towards assuming their ultimate form�察 �but were disappointed�察 �as the
embryos died。 Fig。 2 F is the tongue of a Nassa�察�from a photograph by
Dr。 Kingsley。
Footnotes�此�
��1�� SERTULARIA OPERCULATA and GEMELLARIA
LOCICULATA�察 �or any of the small SERTULARIAE�察 �compared with
CRISIAE and CELLULARIAE�察�are very good examples。 For a fuller
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description of these�察�see Appendix explaining Plate I。
��2�� If any inland reader wishes to see the action of this foot�察�in the
bivalve Molluscs�察 �let him look at the Common Pond´Mussel ��Anodon
Cygneus���察�which he will find in most stagnant waters�察�and see how he
burrows with it in the mud�察 �and how�察 �when the water is drawn off�察 �he
walks solemnly into deeper water�察�leaving a furrow behind him。
��3�� These shells are so common that I have not cared to figure them。
��4�� Plate IX。 Fig。 3�察�represents both parasites on the dead Turritella。
��5�� A few words on him�察 �and on sea´anemones in general�察 �may be
found in Appendix II。 But full details�察 �accompanied with beautiful
plates�察�may be found in Mr。 Gosse's work on British sea´anemones and
madrepores�察�which ought to be in every seaside library。
��6�� Handbook to the Marine Aquarium of the Crystal Palace。
��7�� An admirable paper on this extraordinary family may be found in
the Zoological Society's Proceedings for July 1858�察 �by Messrs。 S。 P。
Woodward and the late lamented Lucas Barrett。 See also Quatrefages�察�
I。 82�察�or Synapta Duvernaei。
��8�� Thalassema Neptuni ��Forbes' British Star´Fishes�察�p。 259���察�
��9�� The Londoner may see specimens of them at the Zoological
Gardens and at the Crystal Palace�察 �as also of the rare and beautiful
Sabella�察�figured in the same plate�察�and of the Balanophyllia�察�or a closely´
allied species�察�from the Mediterranean�察 �mentioned in p。 109。
��10�� A Natu
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