href="@public@vhost@g@gutenberg@html@files@41695@[email protected]#PART_IV" class="pginternal" tag="{http://www.w3.org/1999/xhtml}a">Part IV)

39 Triarthrus becki Green 39 Historical 40 Restoration of Triarthrus 42 Relation of cephalic appendages to marking on dorsal surface of glabella 43 Anal plate 44 The appendages of Ptychoparia 45 Ptychoparia striata (Emmrich) 45 Ptychoparia cordilleræ (Rominger) 45 Ptychoparia permulta Walcott 45 The appendages of Kootenia 46 Kootenia dawsoni Walcott 46 The appendages of Calymene and Ceraurus 46 Historical 46 Comparison of the appendages of Calymene and Ceraurus with those of Triarthrus 47 Spiral branchiæ 48 Ventral membrane 50 Appendifers 51 Calymene senaria Conrad 52 Cephalic appendages 52 Thoracic appendages 53 Pygidial appendages 54 Relation of hypostoma to cephalon in Calymene 55[12] Restoration of Calymene 56 Calymene sp. ind. 56 Ceraurus pleurexanthemus Green 57 Cephalic appendages 58 Thoracic appendages 59 Pygidial appendages 59 Relation of hypostoma to cephalon 59 Restoration of Ceraurus pleurexanthemus 60 public@vhost@g@gutenberg@html@files@41695@[email protected]#Appendages_Acidaspis"