210 



HAWAIIAN AND OTHER PACIFIC ECHINI. 



PAGE 



Toxopneustes Agassiz 282 



Toxopneustes chloracanthus, sp. 



nov., Plate 93, figs. 6', 7 . . 283 



Tripneustes Agassiz 285 



*Tripneustes gratilla Loven . . 286 



Gymnechinus Mrtsn 286 



Gymnechinus megaloplax, sp. 



nov., Plate 102, figs. 2,3 . . 287 

 Gymnechinus epistichus, sp. 

 nov., Plates 93, figs. 22, 23; 



102, figs. 4,5 289 



Temnopleuridffi Desor 290 



General Considerations 290 



The Spines, Pedicellarise, Sphseridia, 



and Spicules 291 



The Genera and Species of Recent 



Temnopleuridce 291 



Trigonocidaris A. Ag 295 



*Trigonoeidaris albida A. Ag. . 295 



Hypsiechinus Mrtsn 296 



Genocidaris A. Ag 296 



Genocidaris apoda A. Ag. and 

 Cl., Plates 93, figs. 16, 17; 



100, figs. 1-3 297 



Orechinus Dod 300 



*Orechinus monolini Dod., Plate 



93, figs. 27-31 300 



Lamprechinus Dod 302 



Prionechinus A. Ag 302 



*Prionechinus Chuni Dod. . . 304 

 Prionechinus ruber A. Ag. and 



Cl./ Plate 100, figs. 4-6 . . 304 

 *Prionechinus sculptus A. Ag. 

 and Cl., Plates 93, figs. 24-26; 



101, figs. 4-6 306 



Prionechinus Agassizii Wood- 

 Mas, and Ale 308 



*Prionechinus depressus A. Ag. 



and CL, Plate 101, figs. 1-3 . 309 



Opechinus Desor 310 



Opechinus variabilis Mrtsn. . . 311 



Temnopleurus Agassiz .... 311 



Temnopleurus Hardwickii A. Ag. 312 

 Temnopleurus toreumaticus 



Agassiz 312 



Temnopleurus Reevesii Mrtsn. 313 

 Salmacis Agassiz, Plates 93, figs. 



33-36; 111, figs. 4-6 ... 314 



Temnotrema A. Ag 317 



* Hawaiian 



PAGE 

 *Temnotrema hawaiiensis, comb. 



nov., Plate 99, figs. 1-3 . . 319 

 Temnotrema sculpta A. Ag., 



Plate 112, figs. 1,2 .... 321 

 Mespilia Agass. and Des. . . . 322 

 Microcyphus Agass. and Des. . . 322 



Salmacopsis Dod 324 



Salmacopsis olivacea Dod., 

 Plates 103, figs. 6, 7; 112, 



figs. 3,4 324 



Amblypneustes Agassiz .... 325 

 Amblypneustes pachistus, sp. 

 nov., Plates 104, fig. 6; 112, 

 figs. 10, 11; 121, figs. 1-3 . . 327 

 Amblypneustes grandis, sp. nov., 



Plate 121, figs. 4-6 .... 329 

 Amblypneustes triseriatus, sp. 

 nov., Plates 104, fig. 5; 112, 



fig. 5 331 



Holopneustes Agass. and Des. . . 332 

 Holopneustes pycnotylus, sp. 

 nov., Plates 104, fig. 4; 112, 



figs. 6-9 334 



Goniopneustes Duncan .... 336 

 Goniopneustes pentagonus Dun- 

 can, Plate 93, figs. 18-21 . . . 336 

 Strongylocentrotidae Gregory .... 338 



General Considerations 338 



The Spines, Pedicellarite, Sphaeridia, 



and Spicules 338 



The Genera and Species of Strongy- 



locentrotid;e 339 



Echinostrephus A. Ag., Plate 105, 



figs. 0-11 342 



*Echinostrephus aciculatus A. 

 Ag., Plates 95, figs. 23, 24; 



105, fig. 9 342 



Pseudoboletia Trosch 344 



*Pseudoboletia Indiana A. Ag., 

 Plate 92, figs. 12-18 ... 345 



Paracentrotus Mrtsn 347 



Loxechinus Desor 347 



Ceenocentrotus, gen. nov., Plate 



95, figs. 16,17 348 



Pachycentrotus, gen. nov., Plates 



94, figs. 1-6; 98, figs. 5-8 . . 349 

 Heliocidaris Agass. and Des., Plate 



94, figs. 7, 8 350 



Heliocidaris stenopora, nom. 

 species. 



