The Apodida: A Morphological Study |
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Page xiv
... whole class . I intended to content myself with an endeavour to show that in the Apodide the process and method of the trans- formation of carnivorous Annelids into Crustacea was still visible in almost every organ and system of organs ...
... whole class . I intended to content myself with an endeavour to show that in the Apodide the process and method of the trans- formation of carnivorous Annelids into Crustacea was still visible in almost every organ and system of organs ...
Page 8
... whole , but a morphological tour de force , or a fairly 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 ...
... whole , but a morphological tour de force , or a fairly 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 ...
Page 12
... clearly modified . In most Trilobites traces of it are still visible in the glabella ( Fig . 47 , p . 213 ) . In Apus , the disguise is very complete , the whole head being broad and flat . This form is due to 12 PART I THE APODIDE.
... clearly modified . In most Trilobites traces of it are still visible in the glabella ( Fig . 47 , p . 213 ) . In Apus , the disguise is very complete , the whole head being broad and flat . This form is due to 12 PART I THE APODIDE.
Page 14
... whole class of the Crustacea , which has not received the attention it deserves . Projecting ventrally and posteriorly over the mouth is a large upper lip , corresponding with the prostomium of the Annelid ancestor . This upper lip is ...
... whole class of the Crustacea , which has not received the attention it deserves . Projecting ventrally and posteriorly over the mouth is a large upper lip , corresponding with the prostomium of the Annelid ancestor . This upper lip is ...
Page 15
... whole dorsal surface and ( laterally ) of the gills . The lateral edges of the shield are prolonged into the ridge which , run- 1 Cf. pp . 39 , 40 , and 194 , also Fig . 43 , p . 188 . ning round the front of the head , makes the SECT ...
... whole dorsal surface and ( laterally ) of the gills . The lateral edges of the shield are prolonged into the ridge which , run- 1 Cf. pp . 39 , 40 , and 194 , also Fig . 43 , p . 188 . ning round the front of the head , makes the SECT ...
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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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