1920] Kew: Cretaceous and Cenozoic Echinaidea 25 



Dendraster ashleyi var. ynezensis Kew 116 



Dendraster coalingaensis Twitchell 117 



Dendraster diegoensis diegoensis Kew 120 



Dendraster diegoensis venturaensis Kew 120 



Dendraster cxcentricus Eschscholtz 121 



Dendraster gibbsii (Remond) 122 



Dendraster gibbsii var. humilis Kew 124 



Dendraster hesperis Kew 125 



Dendraster hesperis var. gibbosus Kew 126 



Dendraster jacalitosensis Kew 126 



Dendraster pacifictis Kew 128 



Dendraster perrini (Weaver) 129 



Subgenus Dendraster (Calaster) Kew 130 



Dendraster (Calaster) interlineatus (Stimpson) 131 



Dendraster (Calaster) oregonensis (W. B. Clark) 132 



Dendraster (Calaster) oregonensis var. gibbosus Kew 134 



Dendraster (Calaster) oregonensis var. major Kew 134 



Genus Scutaster Pack 135 



Scutaster andersoni Pack 135 



Genus Encope Agassiz 136 



Encope tenuis Kew 136 



Genus Mellita Agassiz 137 



Mellita longifissa Michelin 137 



Suborder Spatangina Jackson 138 



Tribe Cassiduloidea Duncan 138 



Family Cassidulidae Agassiz 138 



Genus Cassidulus Lamarck 138 



Subgenus Rhynchopygus d'Orbigny 138 



Cassidulus (Rhynchopygus) californicus (F.M.Anderson) 138 



Cassidulus (Rhynchopygus) ellipticus Kew 139 



Cassidulus (Rhynchopygus) mexicanus Kew 140 



Cassidulus (Rhynchopygus) ynezensis Kew 141 



Genus Catopygus Agassiz 142 



Catopygus (?) californicus Kew 142 



Catopygus (?) cajonensis Kew 143 



Tribe Spatangoidea Duncan 143 



Family Spatangidae Wright 143 



Genus Epiaster d'Orbigny 143 



Epiaster depressus Kew 143 



Genus Hemiaster Desor 144 



Hcmiaster alamedensis Kew 144 



Hemia,ster californicus W. B. Clark 145 



Hemiaster cholamensis Kew 145 



Hemiaster oregonensis Kew 147 



Genus Schizaster Agassiz 148 



Schizaster californicus (Weaver) 148 



Schizaster cordiformis Kew 149 



Schizaster diabloensis Kew 150 



Schizaster lecontei Merriam 151 



Schizaster martinezensis Kew 153 



Schizaster stalderi Weaver 154 



Genus Spatangus Lamarck 155 



Spatangus pachccoensis Pack 155 



