CONTENTS >X 



Supcrfamily Orthacca — Cont. 



Page 



Family Plcctorthidx — Cont. 



• 70 



Subfamily Orthostrophiinae _„ 



Orthostrophia -. 



O. dart(F, nov 



71 



Family Skenidiidas yi 



Skentdio'tdes ^2 



S. hillingsi -o 



Sken'ui'tum 



73 



Family Orthida: _- 



Subfamily Orthinse ^5 



Orthis n-j 



Cyrtonotella n-j 



Nicolella yg 



Glossorthis ^9 



Paurorthis gQ 



Archtrorthis g. 



Subfamily Productorthinae gj 



Panderina g2 



Productorthis r.. 



Subfamily Angusticardiniinae g^ 



Angusticardinia „, 



Subfamily Taffiinae g5 



Taffia Z'ZZZZ'Z'. 85 



Eostrofbomena „- 



Subfamily Hesperorthinae g5 



Hesperorthis g^ 



Schizoramma gg 



S. gotlandica, nov gg 



Dolerorthis og 



Subfamily Glyptorthinae gg 



Glyptorthis ni 



Eridorthis g2 



Ptychofleurella o, 



P. matapedia, nov 



93 



Family Dinorthidae o, 



Dinorthis nc 



Dinorthis s. s qc 



Plasiomys ge 



Retrorsirostra g, 



Pionorthis g, 



Marionella ' g_ 



Valcourea gg 



V. magna, nov _„ 



Multicostella gg 



Auitinella jqq 



Palceoitrophomena .qq 



Planidorsa iqi 



P. hella jQj 



P. crassicostella, nov 



Family Porambonitidae jq2 



Porambonites Iqc 



Noetlingia 



, ^, .._, 105 



Family Lycophonidae jq5 



Lycophoria 



