CONTENTS. 



Fossil Echini of the West Indies, By Robert Tracy Jackson. 



page 



Introduction 1 



Geographical and Geological Distribution . . 4 



Cuba 4 



Jamaica S 



Dominican Republic 6 



Porto Rico 6 



Anguilla 7 



St. Bartholomew 8 



Antigua 8 



Guadeloupe 9 



Barbados 10 



Trinidad 10 



Geological Distribution 10 



Systematic Descriptions 14 



Order Cidaroida 14 



Family Cidaridae 14 



Cidaris 14 



C. anguillae Cotteau 15 



C. peloria, sp. nov 16 



C. foveata, sp. nov 17 



C. sp. a. , ! . . . . 18 



C. sp. b 19 



C. loveni Cotteau 19 



C. clevei Cotteau 20 



C. melitensis Wright 21 



C. tribuloides (Lamarck) 23 



Order Centrechinoida 23 



Suborder Aulodonta 23 



Family Pedinidae 23 



Echinopedina 23 



E. cubensis Cotteau 23 



Family Hemicidaridae 24 



Codiopsis 24 



C. arnaudi Cotteau 24 



Suborder Stirodonta 24 



Family Saleniidae . 24 



Salenia 24 



S. scutigera (Miinster) 24 



Family Phymosomatidae 25 



Phymosoma 25 



P. cubense (Egozcue) 25 



Suborder Camerodonta 25 



Family Echinometridae 25 



Echinometra 25 



E. prisca Cotteau 25 



Order Exocycloida 27 



Suborder Holectypina 27 



Conulus 27 



C. antillensis (Cotteau) 27 



Lanieria 28 



L. lanieri (Cotteau) 28 



Discoidea 29 



D. decorata Desor 29 



Suborder Clypeastrina 29 



Family Fibulariidae 29 



Sismondia 29 



S. antillarum Cotteau 30 



S. anguilla; Cotteau 30 



PAGE 



Systematic Descriptions — Continued 

 Suborder Clypeastrina — Continued 



Family Clypeastridae 31 



Anomalanthus 31 



A. gregoryi Lambert 31 



Clypeaster 32 



C. rosaceus (Linne) 33 



C. concavus Cotteau 34 



C. caudatus, sp. nov 36 



C. dalli (Twitchell) 37 



C. cubensis Cotteau 37 



C. parrae Desmoulins 38 



C. lanceolatus Cotteau 38 



C. antillarum Cotteau 39 



C. planipetalus Cotteau 40 



C. cryptopetalus, sp. nov 40 



C. cotteaui Egozcue 41 



C. batheri Lambert 42 



C. parvus Michelin 42 



C. duchassaingi Michelin 43 



C. ambigenus (Lamarck) 43 



C. placentoides. sp. nov 43 



C. meridanensis Michelin 44 



C. oxybaphon, sp. nov 44 



C. platygaster, sp. nov 45 



Family Laganidae 46 



Laganum 46 



L. elongatum Egozcue 47 



Peronella 47 



P. mirabilis, sp. nov 47 



Family Scutellidae 48 



Echinarachnius 48 



E. sebastiani, sp. nov 48 



Encope 50 



E. ciae de Cortazar 50 



E. latus, sp. nov 51 



Mellita 52 



M. sp 52 



Suborder Spatangina 52 



Family Echinoneidae 54 



Echinoneus 54 



E. orbicularis Desor 54 



E. cyclostomus Leske 54 



Amblypygus 55 



A. americanus Desor 55 



Family Nucleolitidae 56 



Parapygus 56 



P. antillarum (Cotteau) 56 



P. parallelus (Cotteau) 57 



Echinolampas 57 



E. semiorbis Guppy 58 



E. antillarum Cotteau 59 



E. ovumserpentis Guppy 60 



E. clevei Cotteau 63 



E. lycopersicus Guppy 64 



E. castroi Cotteau 66 



