GENERAL INDEX. 



Helodus gibberulus Ag ...11,79 



( )gibbosus N. & VT : . 11,79*: VI, 305 



laevissimus Ag 11.91 



Umax N. & W II, go*, 83 



(Cochliodus) nobilis N. & W H, 88* 



( ) placenta N. & W 11,80*; VII, 69* 



planus Ag 11,80,93; TI.419; TII.64 



politus X. & W 11,79* 



pusillus (McCoy) 11,34 



rugosus N. & W IV. 359* 



sulcatus N. & W 11,83* 



undulatus N. & W 11,82* 



Helopora Hall Till, 363, 401, 642 



circe Billings VIII,46* 



( ) concava Billings Vm,645 



( ) formosa Billings YIII.645 



fragilis Hall VILE, 401, 643t 



imbricata Ulrich Till, 644* 



lindstromi Ulrich Till. 643t 



( " ) lineata Billings Tin, 645 



( " ) lineipora Billings Till, 645 



spiniformis Ulrich Till, 644 



( " ) striatapora Billings Till, 645 



( " ) strigosa Billings Tm,645 



( " ) variopora Billings Till, 468 



Hemeristia Dana 111,566 



occidentalis Dana 111,566 



Hemipronites Pander 111,349; T.570 



crassus M. & Hayd T.570 



crenistria Phill Ill, 411 



(?) propinauus M. & W 111,351 



suplanus (Conr.) Ill, 349*. 351 



Hemipristis Agassiz I V, 351 



Hemitrypa Phillips Till, 353, 396,559 



aspera Ulrich Till, 563 * 



nodosa Ulrich Till, 562* 



oculata Phillips Till, 396 



pateriformis Ulrich Till, 564* 



perstriata Ulrich Till, 564* 



plumosa (Prout) Till, 561, 562.564 



proutana Ulrich Till, 560* 



var. nodulosa Ulrich Till, 562* 



var. vermifera Ulrich Till, 561* 



tenera Ulrich Till, 559 



Hernodia Hall Tin, 368 



Heterocrinus Hall HI, 324, 328 ; TI, 4H3 



crassus M. & W 111,324*; TI.493 



( " )incurvus M. & W IH,327i* 



subcrassus M. & W Ill, 325* 



(Heterodictya Nicholson) Till, 390 



Heteropora Blainville Tin,340 



Heteroschisma Wachsmuth Til, 352 



alternatum (Lyon) Til, 357 



var. elongatum Wachsmuth Til, 353 



gracile Wachsm Til, 354t 



