The Apodida: A Morphological Study |
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Page 7
... stage in the development of the other Crustacea . This will conclude Part I. , which we hope will have shown that , so far as such claims can be based purely upon morphological , anatomical , and biological reason- ing , SECT . I OBJECT ...
... stage in the development of the other Crustacea . This will conclude Part I. , which we hope will have shown that , so far as such claims can be based purely upon morphological , anatomical , and biological reason- ing , SECT . I OBJECT ...
Page 15
... stages ; Fig . 48 , page 215 , in con- nection with which the origin of the shield will be discussed more in detail , illustrates what we imagine to have been the first step in the formation of the dorsal shield . This function has ...
... stages ; Fig . 48 , page 215 , in con- nection with which the origin of the shield will be discussed more in detail , illustrates what we imagine to have been the first step in the formation of the dorsal shield . This function has ...
Page 16
... stage . The rule in the develop- ment of Annelid larvæ is that the successive segments form in front of the anal segment , and differentiate from before backward , those furthest from the anal segment being the most developed . In Apus ...
... stage . The rule in the develop- ment of Annelid larvæ is that the successive segments form in front of the anal segment , and differentiate from before backward , those furthest from the anal segment being the most developed . In Apus ...
Page 18
... stage in other Crustaceans . This steady develop- ment of Apus from its larva , as an Annelid develops from the Trochophora , falls in with our explanation of its morphology . Apus , however , differs from its Annelid ancestors in that ...
... stage in other Crustaceans . This steady develop- ment of Apus from its larva , as an Annelid develops from the Trochophora , falls in with our explanation of its morphology . Apus , however , differs from its Annelid ancestors in that ...
Page 24
... stages , it is naturally very early developed , the youngest larva having a cuticle too thick to allow of gradual regular growth . This leads to the habit of moulting , which was doubtless very gradually acquired . The earliest ...
... stages , it is naturally very early developed , the youngest larva having a cuticle too thick to allow of gradual regular growth . This leads to the habit of moulting , which was doubtless very gradually acquired . The earliest ...
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Common terms and phrases
2nd Edit 3rd Edit acicular glands animal Annelidan antennæ Apodidæ appendages Apus bending body brain canal carnivorous Annelid chitinous Cirripedia Cladocera cœlom Crustacea cuticle deduce developed diverticula dorsal parapodium dorsal shield eggs ENGLISH epithelium ESSAYS Eurypterus excretory exoskeleton eye of Apus fold function ganglia genital Globe 8vo gradually groups head-shield higher Crustacea HISTORY homology hypodermis Illustrated intestinal jaws labrum larva larvæ lateral limbs of Apus Limulus longitudinal Malacostraca mandibles masticatory ridges maxillæ membrane ment mid-gut modern Crustacea morphological mouth muscle bands musculature Nauplius nephridia nerves number of segments ocelli œsophageal commissures original Annelid Ostracoda pair of limbs paired eyes Phyllopodan POEMS position posterior primitive Crustacean probably Prof prostomium Pterygotus pygidium round rudimentary second antennæ sensory cirrus sensory organs SERMONS shell gland sinus specialised surface theory tion Tracheata Trilobites trunk limbs trunk segments tube unpaired eye ventral parapodia vols
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