CONTENTS. 



L. mutatws (Keyes) . . . .{;<;, 



L. nobilis (Meek and Wort linn . . ;;:{.-, 



L. mixgouricHsis (Jackson). Genotype 337 



L. anglicus sp. nov. . . . 34(5 



L. septies sp. nov. . . . ;j4x 



Oligoporus Meek and Worthen . . :j.-,n 



O. blairi Miller and Gurley , ;{<, | 



0. coreyi Meek and Worthen . . . :;;,:; 



O. sulcatus Miller and Gurley . . . 354 



O. halli sp. nov. .... :jf>. r > 



O. danae (Meek and Worthen) . Genotype 3 /if, 



Melonechinus Meek and Won hen . , 359 



M. dispar (Fischer von Waldheim) . . 365 



M. parvus (Hambach) .... 365 



M . springeri sp. nov. .... 366 



M. crassus (Hambach) .... 367 



M. indianensis (Miller and Gurley) . . 369 

 M. stewartii (Safford) . . . .371 



M. septenarius (Jackson) .... 373 



M. obovatus sp. nov. .... 373 



M. liratus sp. nov 374 



M. multiporus (Norwood and Owen). 



Genotype 375 



.Vf . keepingi sp. nov. .... 384 



M. elheridgii (Keeping) .... 385 



M. vanderbilti sp. nov 388 



M. giganteus (Jackson) .... 389 



Family LEPIDESTHIDAE Jackson . . . 393 



Lepidechinus Hall 394 



L. irregularis (Keeping) .... 396 



L. iowerttii gp. nm .... 397 



L. trittrllnlux up. n,,v . . . 397 



/.. imi>rir,,t,,i Hall Genotype . . 399 



Periachodomus MI . . 4<>l 



I'. Inner, Genotype . . mi 



/'. lY/l'/l< .. /' .-M \\.irlhrll all'l MllIlT . . 4O6 



Perischocidaris Nciunayr . . . in? 



/'. harteiana [Uaily). Genotype . . 4UM 



Proterocidarii Konim-k . ... 4m 



i' .'iMinrk Genotype . . 4lo 



Lepideathei M<*-k :iii.lWnrt>H-ii . uj 



L. i .'-k.iKii 410 



L. laei'i* Tratifm-liiild . . . J|s 



L.formosa Miller ||* 



L. devonicans Whi<lbonie .... 420 



L. spectabilif (\Vortln-n and Millm . . 421 



L. coreyi : Meek and \V<,rlh.-n. Genotype 423 



L. carinaln sp. nov. ..... 4JI 



A. mllt-lli White 425 



L. rjrtrrmix sp. nov 431} 



L. nilnlniiirii sp. nov 



Pholidocidaria Merk and Wc.rt hi-n . 

 /'. irregularis (Mi-ck and U,,r 



Genotype 434 



P.sp 440 



/'. tvnuix ToniquiHt 440 



/'. acuaria (Whidborne) . . . .441 

 /'. ijniulnji (Julien) 



Meekechinus um. nov 442 



-)f. elegaiis sp. nov. Genotype 



INCERTAE SEDIS 



Archaeocidaris konincki Desor . 



A. ladina Stache .... 



A. scotica Young .... 



A. selwyni R. Etheridge, Jr. 



A. sixi Barrois .... 



A. traulscholdi Tornquisl 



A. sp. Meek and Hayden 



A. sp. Meek and Hayden 



A. sp. Stache 



A. (?) sp. Worthen and Miller . 

 A. sp. R. Etheridge, Jr. . 



A. sp. Julien 



A. sp. Julien 



A. sp. Julien 



Cidarites tennesseae Troost 

 Echinocrinus anceps T. and T. Austin 

 E. spinosus T. and T, Austin , , 



446 

 446 

 447 

 447 

 447 

 448 

 448 

 448 

 448 

 448 

 448 

 449 

 449 

 449 

 449 

 449 

 449 



44 



A'. .s/rm/M.s Kic-hwald .... 450 



E. sp. Austin 460 



M i Inn i liili >i Tornqui.st .... 450 



Oligoporus (f) minulux Hm!<* . . . 4."><) 



PalatcUlttM (/) konigii M'Cuj . -(."><) 



Paburrhhiiix rcgnyi nom. nov. . . . -I.">1 



Palaechinn.i robineti Julien . . . 452 

 Palechinus tp. Tornquist .... 



Palatocidaris erilis Eichwald . . . 453 



Palaeodiscus gothicuf Wyville Thonixm . 453 



Pataeospaiangvs skiptnm Harlr . . 453 



Periachodomus magnus Tornquint . . 453 



Protoechinus T Austin .... 453 



P. anceps T Austin. Genotype. 454 



Rhoechiniu sp. Duncan .... 454 



Khotchinu* (t) p. Tornquirt ... 454 



