Animal Parasites and MessmatesD. Appleton, 1876 - 274 pagini |
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Pagina xxi
... sexes appear only under this later envelope ; up to this period they have had no thoughts of the cares of a family . It has always been somewhat difficult to establish the identity of those persons who frequent the public saloons one ...
... sexes appear only under this later envelope ; up to this period they have had no thoughts of the cares of a family . It has always been somewhat difficult to establish the identity of those persons who frequent the public saloons one ...
Pagina xxiii
... sex ; that is to say , they have seen nematodes , the parasites of the lungs of the frog , always female or hermaphrodite , produce individuals of the two sexes which do not resemble their mother , and whose habitual abode is not in the ...
... sex ; that is to say , they have seen nematodes , the parasites of the lungs of the frog , always female or hermaphrodite , produce individuals of the two sexes which do not resemble their mother , and whose habitual abode is not in the ...
Pagina xxv
... sexes which seeks a victim . All animals usually live for the passing day ; and yet there are some which practise economy , which are not ignorant of the advantages of the savings bank , and , like the raven and the magpie , think of ...
... sexes which seeks a victim . All animals usually live for the passing day ; and yet there are some which practise economy , which are not ignorant of the advantages of the savings bank , and , like the raven and the magpie , think of ...
Pagina 26
... sexes differ little from each other except in size , in the abdomen , and in the antennæ . Maury has de- scribed certain amphipod crustaceans which also inhabit the Salpæ . Another phronima described by Professor Claus , the Phronima ...
... sexes differ little from each other except in size , in the abdomen , and in the antennæ . Maury has de- scribed certain amphipod crustaceans which also inhabit the Salpæ . Another phronima described by Professor Claus , the Phronima ...
Pagina 28
... sex , and descends to the lowest degree of servitude . Faujas de Saint - Fond has mentioned a fossil hermit- crab as found in the mountain , St. Pierre de Maestricht ; but he called by this name a crustacean of the genus Callianassa and ...
... sex , and descends to the lowest degree of servitude . Faujas de Saint - Fond has mentioned a fossil hermit- crab as found in the mountain , St. Pierre de Maestricht ; but he called by this name a crustacean of the genus Callianassa and ...
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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
Pasaje populare
Pagina iv - II. Physics and Politics ; or, Thoughts on the Application of the Principles of "Natural Selection " and " Inheritance