X CONTENTS. 



Fossil Echini of the Panama Canal Zone and Costa Rica — Continued. 



Description of species — continued. Page. 



Schizaster armiger 113 



cristatus 113 



panamensis 114 



Description of plates 115 



Index i 



Bryozoa of the Canal Zone and related areas. By Ferdinand Canu 



and Ray S. Bassler 117 



Descriptions of species 117 



Ogivalina mutabilis „ 117 



Cupularia umbellata 118 



canariensis 119 



Holoporella albirostris 120 



Stichoporina tuberosa 121 



Explanation of plate 121 



Index i 



Decapod Crustaceans from the Panama Region. By Mary J. Rathbun. 123 



Introduction 123 



Literature on Tertiary Decapods of Panama 124 



List of stations from which material has been examined, arranged from the 



earliest to the latest, with the species found at each 124 



Descriptions of species 131 



Family, genus, and species indeterminable 131 



Macrobrachium, species 131 



Macrobrachium (?), species 132 



Nephrops costatus 132 



Nephrops, species 133 



Pachycheles latus 134 



Petrolisthes avitus 134 



Axius reticulatus 135 



Axius (?), species 136 



Callianassa ovalis 137 



lacunosa 138 



elongata 139 



scotti 140 



crassimana 141 



moinensis 142 



spinulosa 143 



tenuis 144 



quadrata 145 



toulai 146 



abbreviata • 147 



hilli 148 



vaughani 148 



stridens 151 



magna 151 



crassa 152 



Callianassa, species 152 



Callianassa (?), species 153 



Petrochirus bouvieri 153 



Goniochele (?) armata 154 



Hepatus chiliensis 155 



Hepatus, species 155 



