94 MESOZOIC ECHINODERMATA OF THE UNITED STATES. [bull. 97. 

 GEOLOGICAL DISTRIBUTION. 



CRINOIDEA : 



UlNTACRINID^— 



Uintacrinus socialis Grinnell , 



Apioceinid^— 

 Bourgueticrinus alabamennis de Loriol 



PeNTACRI N 111,55— 



Peutacrinus asterisciLS Meek and Hayden 



Pentacrinus Wliitei Clark 



Pentacrinus Bryani Gabb 



ASTEROIDEA: 

 Ophiurid^— 



Ophiogl ypha bridgeiensis (Morton) 



Opbioglypha texaua Clark 



STELLERIDvE— 



Asterias ( ? ) diibinm "Whitfield 



Goniaster mammiUata Gabb 



ECHINOIDEA: 



Edechinoidea— 

 Eegulares— 



CiDARIDAE— 



Cidaiis taylorensis Clark 



Cidaris californkus Clark 



Cidaris splendens Morton 



Cidaris Walcotti Clark 



Cidaris texauus Clark 



Leioiidaris hemigranosns (Shiiniard) 



Salenidae— 



Salenia texana Credner , 



Salenia tumidula Clark 



Salenia bellula Clark 



DlADEMATin^— 



Hemicidaris intnraescens Clark 



Psendodiadema Eniersoni Clark , 



Pseudod iadema diatretum ( Morton ) 



Psendodiadema texanum ( Uoemer) 



Diplopodia texanum (Roemer) 



Diplopodia Hilli Clark 



Coptosoma speciosiini Cl.ark 



Coptosoma Mortoni (de Loriol) , 



Goniopygiis Zitteli Clark 



ECHINID^— 



Psamniechinus cingnlatns Clark 



Stomechinus Hyat.ti Clark 



Pedinopsis Pondi Clark 



Ieregulaees— 

 echinoconid^— 



Holectypns planatus Roemer 



Cassidulid^— 



Pyrina Parryi Hall 



Botriopygus alabainensis Clark , 



Echinobrissus expansus Clark 



Echinobrissus texanus Clark 



Trematopygus cnicifer (Morton) 



Catopygus ovifoiniis Conrad 



Catopygus pusilliis Clark 



Cassidulus tlorealis (Morton) , 



Cassidulus pequorons Morton 



Cassidulus micrococcus Gabb 



Cassidulus subqnadratus Conrad 



Cassidiilus subconicus Clark 



Cassidulus porrectus Clark 



(Cassidulus Stantoni Clark 



Holasteridae— 



Ananchy tea ovalis Clark 



Cardiaster cinctus (Morton) 



Holaster simplex Shumard 



Spatangidae— 



EnaUaster texanns (Roemer) 



Enallaster obliquatus CJark - . . . 



Epiaster olegans (Shumard) 



Epiaster Whitci (Jlark 



Hemiaster etella (Morton) 



Hemiaster parastatus (Morton) 



Hemiaster ungula (Morton) 



Hemiaster texauus Roemer 



Hemiaster Hnmpbreysauus Meek and Haydeu . 



Hemiaster Halli Cl.irk ' 



Hemiastei' rnlitornious Clark 



Hemiaster Calvini Clark 



Linthia tumidula Clark 



Trias. 



(.') 



Jura. 



Lower 

 Creta- 

 ceous. 



