CONTENTS. 



PAGE 



Pedinidse Gregory 213 



General Characteristics 213 



The Spines, Pedicellarire, Sphjeridia, 



and Spicules 215 



Caenopedina A. Ag 216 



*Ca?nopedina hawaiiensis, nom. 



nov., Plates 90, figs. 1-4; 91, 



figs. 1-13; 105, figs. 1-5 . . 217 



Ctenopedina mirabilis Mrtsn., 



Plates 91, figs. 14-17; 105, 



fig. 8 221 



*Ca?nopedina pulchella, comb, 

 nov., Plates 91, figs. 18-22; 

 103, figs. 1-3; 105, figs. 6, 7 . 223 

 Phymosomatidae Meissner .... 225 

 General Characteristics .... 225 

 The Spines, Pedicellarioe, Sphseridia, 



and Spicules 226 



Glyptocidaris A. Ag 228 



Glyptocidaris crenularis A. Ag., 

 Plates 90, figs. 5-10; 92, figs. 

 ;-//; 106, figs. 1,2 .... 228 

 Stomopneustidfe Mortensen, Plate 90, 



figs. 11,12 229 



Echinidfe Agassiz 231 



General Considerations 231 



The Spines, Pedicellaripe, Sphseridia, 



and Spicules 236 



The Genera and Species of Recent 



Echinidse 238 



Psammechinus Agass. and Des. . 242 



Lytechinus A. Ag 244 



Lytechinus euerces, sp. nov., 

 Plates 93, figs. 4, 5; 98, figs. 

 3,4; 107, figs. 4-6 . ... 247 

 Lytechinus dyscritus, sp. nov., 

 Plates 93, fig. 10; 96, figs. 1-3 249 



PAGE 

 Lytechinus callipeplus, sp. nov., 



Plate 96, figs. 4-6 251 



*Lytechinus verruculatus, comb. 



nov 253 



Lytechinus anamesus, sp. nov., 



Plates 99, figs. 4, 5; 107, figs. 



7-11 254 



Lytechinus semituberculatus 



Verr 258 



Lytechinus pictus, comb, nov., 



Plates 99, figs. 6, 7; 107, figs. 



12-14 258 



Echinus Linne 260 



Echinus Wallisii A. Ag., Plates 



93, fig. 32; 108, figs. 1, 2 . . 265 

 Echinus euryporus, sp. nov., 



Plates 93, figs. 2, 3; 109, figs. 



4-6 266 



Echinus lucidus Dod., Plate 107, 



figs. 1-3 267 



Echinus atlanticus Mrtsn., Plate 



110, figs. 1-3 269 



Echinus tylodes, sp. nov., Plates 



93, figs. 11-15; 109, figs. 1-3 269 

 Echinus anchistus, sp. nov., 



Plates 93, figs. 8, 9; 103, figs. 



4,5; 111, figs. 1-3 . . . . 271 



Parechinus Mrtsn 272 



Parechinus magellanicus, comb. 



nov 275 



Nudechinus, gen. nov., Plate 



111, figs. 7, 8 276 



Nudechinus scotiopremnus, sp. 



nov., Plate. 97, figs. 4-6 . . 277 

 Nudechinus stictus, sp. nov., 



Plates 93, fig. 1; 97, figs. 1-3 . 279 

 Evechinus Verr. 281 



* Hawaiian species, 



