The Apodida: A Morphological Study |
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Page xv
... seem , 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.
... seem , 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 3
... seems small , but we cannot bridge it over until we decide whether the segmentation of the Annelids is a kind of axial strobilation , or the natural mechanical selection of internal symmetry . Between the Annelids and the Molluscs we ...
... seems small , but we cannot bridge it over until we decide whether the segmentation of the Annelids is a kind of axial strobilation , or the natural mechanical selection of internal symmetry . Between the Annelids and the Molluscs we ...
Page 20
... seem to function as tactile papillæ . The posterior dorsal surface of the anal segment is sometimes prolonged into a variously shaped caudal plate or lamella , 1 which we shall find to be the homologue of the caudal spine of the ...
... seem to function as tactile papillæ . The posterior dorsal surface of the anal segment is sometimes prolonged into a variously shaped caudal plate or lamella , 1 which we shall find to be the homologue of the caudal spine of the ...
Page 29
... seem to have been noticed . It is true that in many small thin - skinned typical Crustaceans the articulations seem to be slightly developed , but in these the whole exoskeleton has been reduced ; this does not affect the significance ...
... seem to have been noticed . It is true that in many small thin - skinned typical Crustaceans the articulations seem to be slightly developed , but in these the whole exoskeleton has been reduced ; this does not affect the significance ...
Page 38
... seems to have ceased to function as a jaw , and the powerful swimming limb , the sixth or ( morphologi- cally ) the first trunk limb , has developed strong masti- catory processes , which seem to function as the chief mandibles.1 It is ...
... seems to have ceased to function as a jaw , and the powerful swimming limb , the sixth or ( morphologi- cally ) the first trunk limb , has developed strong masti- catory processes , which seem to function as the chief mandibles.1 It is ...
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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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