Elements of Zoology |
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Page 43
... clinging to the floating twigs and leaves , resem- bling slugs . Some are brown , with from two to thirty black eye - spots . The marine forms at- tain a large size . Many are cov- ered with delicate cilia and pro- tective bristles ...
... clinging to the floating twigs and leaves , resem- bling slugs . Some are brown , with from two to thirty black eye - spots . The marine forms at- tain a large size . Many are cov- ered with delicate cilia and pro- tective bristles ...
Page 47
... cling to the mother ; others are laid in small oval sacs ( Fig . 49 ) , and deposited upon the stems and leaves of water - plants . FIG . 49.- Egg - cap- sules of leech . NOTE . - Land - leeches are greatly dreaded in the forests of ...
... cling to the mother ; others are laid in small oval sacs ( Fig . 49 ) , and deposited upon the stems and leaves of water - plants . FIG . 49.- Egg - cap- sules of leech . NOTE . - Land - leeches are greatly dreaded in the forests of ...
Page 80
... clinging to the mother . A similar case is seen in the fresh - water cray - fish ( Fig . 85 ) , Astacus fluviatilis ; the young of some crustaceans ( Balanus ) appear at first in the Nauplius form , with three pairs of legs . e.c. e.c. ...
... clinging to the mother . A similar case is seen in the fresh - water cray - fish ( Fig . 85 ) , Astacus fluviatilis ; the young of some crustaceans ( Balanus ) appear at first in the Nauplius form , with three pairs of legs . e.c. e.c. ...
Page 94
... cling . They are all swift runners , and in Ceylon , a large land - crab is chased on horseback . NOTE . - At St. Paul's rocks Professor Moseley observed the richly colored Grapsus , a land and water crab , carrying off young birds ...
... cling . They are all swift runners , and in Ceylon , a large land - crab is chased on horseback . NOTE . - At St. Paul's rocks Professor Moseley observed the richly colored Grapsus , a land and water crab , carrying off young birds ...
Page 99
... clings . food passes by the œsopha- gus , b , into a membranous stomach called the crop , c , and thence , in the biting in- 2 . -1 -X -2 - XI 3 -3 - XII FIG . 112. - Longitudinal and verti- cal section of a female cockroach ( Blatta ) ...
... clings . food passes by the œsopha- gus , b , into a membranous stomach called the crop , c , and thence , in the biting in- 2 . -1 -X -2 - XI 3 -3 - XII FIG . 112. - Longitudinal and verti- cal section of a female cockroach ( Blatta ) ...
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Common terms and phrases
abdomen adapted Africa allied form animals antennæ armed ascidian attached attain a length beak bill birds bivalve body bones branch breathe burrows Carnivora cells cilia cilium claws clinging color common coral covered crabs crustaceans curious dorsal dorsal fin eggs extinct extremely eyes feathers feet female fins fishes Florida foot four gills habits hair hatched head hibernate holes hollow Holothurians horns horny hundred Hydroids Hydrozoa inches incisors Indian insects Island jaws lancelet larva larvæ legs limbs living luminous male mammals mandible marsupials membrane mollusks mouth nest North America NOTE.-The organs ovipositor pair pass plates Popular Science pouch prey protected quadrate bone remarkable reptiles resemble sharks shell showing skeleton skin snakes South species are known spines stomach suckers surface swimming tail teeth tentacles toes trees tube upper VALUE.-The Vertebrates viviparous wings worms young