Animal Parasites and MessmatesD. Appleton, 1876 - 274 pagini |
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Pagina 15
... become too small . The old tunic generally splits down the back , and falls off all in one piece as it gives the animal egress . The crustacean is extended quite soft and supple by the side of its rigid carapace . Of all the free ...
... become too small . The old tunic generally splits down the back , and falls off all in one piece as it gives the animal egress . The crustacean is extended quite soft and supple by the side of its rigid carapace . Of all the free ...
Pagina 38
... become at last simple sexual tubes . present we must admit that it is the result of a retrogres- sive development like that of the peltogasters , which , like them , lose all the attributes of their class . They ought , perhaps , to be ...
... become at last simple sexual tubes . present we must admit that it is the result of a retrogres- sive development like that of the peltogasters , which , like them , lose all the attributes of their class . They ought , perhaps , to be ...
Pagina 40
... become a microcosm , as the name of one Medi- terranean species indicates , but even in the substance of their testa lodge Crenella and other molluscs and polyps , which choose by preference to place their dwelling there . There are ...
... become a microcosm , as the name of one Medi- terranean species indicates , but even in the substance of their testa lodge Crenella and other molluscs and polyps , which choose by preference to place their dwelling there . There are ...
Pagina 60
... become a Sacculina on the crab ; the host having been transformed , its acolyte has done the same thing under the same influence . Professor Semper has also found among the Philip- pine Islands , isopod crustaceans living as messmates ...
... become a Sacculina on the crab ; the host having been transformed , its acolyte has done the same thing under the same influence . Professor Semper has also found among the Philip- pine Islands , isopod crustaceans living as messmates ...
Pagina 72
... become bloated , the Ancei , and probably other genera . Instead of the ungainly and unusual forms of true parasites , they all preserve , together with their fishing tackle and locomotive apparatus , their neat and elegant appearance ...
... become bloated , the Ancei , and probably other genera . Instead of the ungainly and unusual forms of true parasites , they all preserve , together with their fishing tackle and locomotive apparatus , their neat and elegant appearance ...
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Termeni și expresii frecvente
abdomen abode amphipod animals annelids appearance attached birds blood body Bothriocephalus branchial branchial cavity Caligi carapace cavity cercaria cestode cirrhipedes Claparède coast colony colour crab crustaceans curious cysticerci cysticercus damp earth decapod digestive distome echinoderm eggs embryos enclosed establish female fish flea free messmates gasteropod genus gives lodging harbours hatched hooks host ichneumons infested inhabit insects instal interior intestines isopod kind known larva larvæ leeches Lernæans Leuckart live lobster male manner medusa mention messmates microscopic midst molluscs Mons mother mouth Müller naturalists neighbour nematode nourishment observed organs pagurus parasites pass Peltogaster pinnotheres polyps present prey produce Prof Professor Semper progeny remarkable resemble scolex seek sexes sexual shell shelter singular skin sometimes species spicules sponge stomach Strongylus sucker tænia tæniæ Tania tape-worm trematode trichinæ tube usually whale worms young
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Pagina iv - II. Physics and Politics ; or, Thoughts on the Application of the Principles of "Natural Selection " and " Inheritance