GENEEA AJifD QEOUPS OF THE ECHINOIDEA. 



289 



Order I. CIDAEOWA, p. 26. 

 Family OIDARIDiE, p. 26. 

 Section I. 

 Genus 

 Cidaris, p. 27. 



Divisions. Ehabdocidaris, Leiocida- 

 ris, Dorocidaris, Stephanocidaris, 

 Phyllaeanthus, Porocidaris, pp.31 , 

 32. 

 Subgenus Goniocidaris, p. 32. 



Genus 

 Orthocidaris, p. 33. 

 Temnoeidaris, p. 34. 

 Polycidaris, p. 34. 



Section II. 



Genus 

 Diplocidaris, p. 35. 

 Tetracidaris, p. 35. 



Order II. DIADEMATOIBA, 

 pp. 24, 36. 



Suborder Steeptosomata, 

 pp. 25, 40. 



Family 

 ECHINOTHUEID^, p. 40. 



Subfamily Pelanechinincs, p. 41. 

 Genus 

 Pelanechinus, p. 41. 



Subfamily EchinothmincB, p. 41. 

 Genus 

 Ecbinothuria, p. 42. 

 Phormosoma, pp. 42, 310. 

 Asthenosoma, p. 43. 



Suborder Stereosomata, pp. 25,45. 

 Family SALENIID^, p. 45. 

 Division I. 

 Genus 

 Peltastes, p. 45. 



Subgenus Goniophorus, p. 46. 

 Salenia, p. 47. 



Subgenus Heterosalenia, p. 47. 



DiTision II. 

 Acrosalenia, p. 48. 

 Family HEMICIDAEID^, p. 48. 

 Genus 

 Hemicidaris, p. 49. 



Subgenus Hemidiadema, p. oU. 



Hypodiadema, p. 50. 



Pseudocidaris, p. 51. 



Asterocidaris, p. 51. 



Acrocidarif, p. 51. 



Subgenus Acropeltis, p. 52. 



LINN. JOTJBN. ZOOLOGY, YOL 



Genus 

 Goniopygus, p. 52. 

 Oiroopeltis, p. 53. 

 Cidaropsis, p. 53. 

 Glypticus, p. 54. 



Genus incertas sedis : 

 Leptocidaris, p. 55. 



Family 

 ASPIDODIADEMATID^, p. 56. 



Genus 

 Aspidodiadema, pp. 65, 56. 



Family DIADEMATID^, pp. 57, 58. 



Subfamily Biadematina, p. 59. 



Genus 



Diadema, syn. Pseudodiadema, p. 60. 



Subgenera Centrostephanus, Micro- 



diadema, Diademopsis, Hemipe- 



dina, Echinodiadema, pp. 61-64. 



Placodiadema, gen. nov., syn. Plesio- 



diadema, p. 64. 

 Heterodiadema, p. 65. 

 Codiopsis, p. 65. 

 Pleurodiadema, p. 66. 

 Magnesia, p. 66. 

 Cottaldia, p. 67. 



Subfamily DiplopodiincB, pp. 59, 67. 



Genus 

 Diplopodia, p. 67. 

 Pedinopsis, p. 68. 

 Acanthechinus, p. 68. 



Subgenus Eadiocyphus, p. 305. 

 Phymecbinus, p. 69. 

 Aster opsis, p. 69. 

 Diplotagma, p. 70. 

 Micropyga, p. 70. 

 Plistophyma, p. 71. 



Subfamily FedinincB, p. 72. 



Genus 

 Pedina, p. 72. 



Subgenus Pseudopedina, p. 72. 

 Ecbinopedina, p. 73. 

 Stomechinus, p. 74. 

 Micropedina, p. 75. 

 Heterocidaris, p. 77. 

 Echinothrix, p. 78. 

 Astropyga, p. 78. 

 Polycyphus, p. 79. 

 Codechinus, p. 80. 



Subfamily Orthopsinm, p. 80. 



Genus 

 Orthopsis, p. 80. 

 Eodiadema, gen. dot., p. 81. 



XXIII. 19 



