Facts and Arguments for Darwin by Fritz Muller (best books to read for self improvement .txt) 📖

almost disappeared; the cirri are thick, inarticulate, and destitute of bristles; and the muscles both of the mouth and cirri are without transverse striation. Darwin found the stomach perfectly empty in the animal examined by him.

 

…

 

Having reached the Nauplius, the extreme outpost of the class, retiring furthest into the gray mist of primitive time, we naturally look round us to see whether ways may not be descried thence towards other bordering regions. By the structure of the abdomen in Nauplius we might be reminded, like Oscar Schmidt, of the moveable caudal fork of the Rotatoria, which many regard as near allies of the Crustacea, or at any rate of the Arthropoda; in the six feet surrounding the mouth we might imagine an originally radiate structure, and so forth. But I can see nothing certain. Even towards the nearer provinces of the Myriopoda and Arachnida I can find no bridge. For the Insecta alone, the development of the Malacostraca may perhaps present a point of union. Like many Zoeae, the Insecta possess three pairs of limbs serving for the reception of nourishment, and three pairs serving for locomotion; like the Zoeae they have an abdomen without appendages; as in all Zoeae the mandibles in Insects are destitute of palpi. Certainly but little in common, compared with the much which distinguishes these two animal-forms. Nevertheless the supposition that the Insecta had for their common ancestor a Zoea which raised itself into a life on land, may be recommended for further examination.

Much in what has been adduced above may be erroneous, many an interpretation may have failed, and many a fact may not have been placed in its proper light. But in one thing, I hope, I have succeeded,—in convincing UNPREJUDICED readers, that Darwin’s theory furnishes the key of intelligibility for the developmental history of the Crustacea, as for so many other facts inexplicable without it. The deficiencies of this attempt, therefore, must not be laid to the charge of the plan drawn out by the sure hand of the master, but solely to the clumsiness of the workman, who did not know how to find the proper place for every portion of his material.

 

INDEX.

Acanthonotus Owenii.

Acanthosoma.

Achaeus.

Achtheres. — percarum.

Allorchestes.

Alpheus.

Amphilochus.

Amphipoda.

Amphithoe.

Anceus.

Anelasma squalicola.

Anilocra.

Aratus. — Pisonii.

Artemia.

Asellus.

Atylus. — carinatus.

Batea.

Bodotria.

Bopyridae.

Bopyrus.

Brachyscelus. — crusculum.

Brachyura.

Branchiopoda.

Calanidae.

Caligus.

Caprella. — attenuata. — linearis.

Carcinus maenas.

Caridina.

Cassidina.

Cerapus.

Chalimus.

Chondracanthus.

Chthamalus.

Cirripedia.

Cladocera.

Copepoda.

Corophium. — dentatum.

Corycaeidae.

Crangon.

Crayfish.

Cryptoniscus planarioides.

Cryptophialus. — minutus.

Cuma.

Cumacea.

Cyclograpsus.

Cyclopidae.

Cyclops.

Cyclopsine.

Cymothoa.

Cymothoadiens.

Cypridina.

Cypris.

Cyrtophium.

Cythere.

Daphnia pulex.

Dercothoe.

Diastylidae.

Dichelaspis Warwickii.

Dulichia.

Edriophthalma.

Entomostraca.

Entoniscus. — cancrorum. — porcellanae.

Erichthus.

Eriphia gonagra.

Euphausia.

Eurynome.

Evadne.

Filograna.

Gammarus. — ambulans. — Dugesii. — puteanus.

Gecarcinus.

Gelasimus. — vocans.

Glaucothoe Peronii.

Grapsus.

Hermit Crabs.

Hippa emerita.

Hippolyte.

Hyperia galba. — Latreillei. — Martinezii.

“Hyperines anormales et ordinaires”.

Idothea.

Insecta.

Isopoda.

Kepone.

Laemodipoda.

Lepas. — anatifera. — australis.

Lernaeodiscus porcellanae.

Lernanthropus.

Lestrigonus.

Leucifer.

Leucothoe.

Ligia.

Lobster.

Lupea diacantha.

Macrura.

Maia.

Megalops.

Melita. — anisochir. — exilii. — Fresnelii. — insatiabilis. — Messalina. — palmata. — setipes. — valida.

Microdeutopus.

Montagua.

Mysis.

“Nauplius-larvae”.

Nebalia.

Niphargus.

Ocypoda. — rhombea.

Orchestia. — Darwinii. — gryphus. — sylvicola. — tahitensis. — telluris. — Tucurauna. — Tucuratinga.

Orchestoidea.

Pagurus.

Palaemon.

Palinurus.

Peltogaster. — socialis.

Peneus. — setiferus.

Persephone.

Philoscia.

Phronima. — sedentaria.

Phryxus.

Phyllopoda.

Phyllosoma.

Pinnotheres.

Podophthalma.

Polyphemus.

Pontellidae.

Porcellana. — stellicola.

Porcellionides.

Praniza.

Prawns.

Protella.

Protula.

Pycnogonidae.

Ranina.

Rhizocephala.

Sacculina purpurea.

Scalpellum Peronii.

Sergestes.

Serpulae.

Sesarma.

Shrimps.

Sphaeroma.

Squilla.

Talitrus.

Tanais. — dubius. — Dulongii.

Tatuira.

Tetraclita porosa.

Trilobites.

Xantho.

Xiphosura.

Zoeae.

 

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