The Apodida: A Morphological Study |
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Page xv
... , the very differences between Apus and these ancient Crustaceans yielded almost more striking proofs of their having had the same origin and of their close relationship , than did the many resemblances which have been INTRODUCTION XV.
... , the very differences between Apus and these ancient Crustaceans yielded almost more striking proofs of their having had the same origin and of their close relationship , than did the many resemblances which have been INTRODUCTION XV.
Page 2
... Close investiga- tion shows the Apodidae to be both morphologically and biologically an almost ideal transition form . now More or less satisfactory transition forms be- tween most of the great animal classes are known , but none has ...
... Close investiga- tion shows the Apodidae to be both morphologically and biologically an almost ideal transition form . now More or less satisfactory transition forms be- tween most of the great animal classes are known , but none has ...
Page 8
... close guess at the truth . We commence with Limulus , and show that if Apus is to be derived from an Annelid with the first five segments bent round ventrally , Limulus must have had a similar origin . In the second section we venture ...
... close guess at the truth . We commence with Limulus , and show that if Apus is to be derived from an Annelid with the first five segments bent round ventrally , Limulus must have had a similar origin . In the second section we venture ...
Page 30
... close agreement between the courses of these two lines is , morpho- logically , a fact of great significance . The more ventral trend of the line in the posterior end of Apus was to be expected as a necessary adaptation to the ...
... close agreement between the courses of these two lines is , morpho- logically , a fact of great significance . The more ventral trend of the line in the posterior end of Apus was to be expected as a necessary adaptation to the ...
Page 61
... close under the lateral integument favours this derivation ( Fig . 14 , cm . ; cf. also Fig . 11 ) . On the other hand , we find on each side of the limb a number of muscle bands with more definite points of insertion ; these are ...
... close under the lateral integument favours this derivation ( Fig . 14 , cm . ; cf. also Fig . 11 ) . On the other hand , we find on each side of the limb a number of muscle bands with more definite points of insertion ; these are ...
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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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