SMITHSONIAN MISCELLANEOUS COLLECTIONS
VOL. 57
| PAGE | |||
| Anostraca, foreshadowed by Burgess shale fauna | 165 | ||
| in Cambrian time | 165 | ||
| no true shell among | 157 | ||
| recent species of, compared with Opabinia | 169 | ||
| telson | 157 | ||
| Antennæ, Branchiopoda and Malacostraca | 159 | ||
| Antennules, Branchiopoda and Malacostraca | 159 | ||
| Apodidæ, Apus and other genera of | 162 | ||
| compared with Burgessia bella | 179, 180 | ||
| preservation of | 166 | ||
| remarkable adaptation of | 165 | ||
| theoretical ancestral stock correlated with | 163 | ||
| Appendages, described and discussed | 158-160 | ||
| of Neolenus and Ptychoparia | 190 | ||
| Apus, Bernard's study of | 162 | ||
| compared with Marrella splendens | 192 | ||
| parapodia of | 162 | ||
| posterior segments of | 159 | ||
| separated from Burgessia | 162-163 | ||
| mentioned | 191 | ||
| Asaphidæ, mentioned | 196 | ||
| Asaphus platycephalus, mentioned | 190 | ||
| Asheaia pedunculata, stratigraphic position and association | 153 | ||
| Asterocheridæ, hepatic cæca of | 160 | ||
| Banffia grandis, stratigraphic position and association | 153 | ||
| Bather, F. A., correction referring to | 148 | ||
| Bathyuriscus rotundatus (Rominger), associated with Mollisonia symmetrica | 197 | ||
| becki, see Triarthrus. | |||
| Beecher, Order Hypoparia | 195 | ||
| bella, see Burgessia. | |||
| Beltina, link between Merostomata and Ziphosuridæ | 165 | ||
| occurrence in pre-Cambrian | 162 | ||
| representing Merostomata | 155 | ||
| Bernard, "The Apodidæ" | 166 | ||
| "The Systematic Position of the Trilobites" quoted | 190-191 | ||
| study of Apus | 162 | ||
| Bident, mountain peak, Alberta, Canada | 174 | ||
| Bidentia, new genus, discussed | 173 | ||
| classification of | 154 | ||
| no living representatives | 165 | ||
| Bidentia difficilis, new species | 174, pl. 30, fig. 1 | ||
| appendages | 174 | ||
| compared with Emeraldella brocki | 174 | ||
| compared with Waptia fieldensis | 174 | ||
| stratigraphic position and association | 153 | ||
| Bohemilla stupenda Barrande, thorax of Mollisonia, recalls | 196 | ||
