38 



NEW YORK STATE MUSEUM 



mention is made of these horizons in Billings's final tale of species. In 



these preliminary lists the following were given : 



Pterygotus Leptocoelia flabellites 



Phacops L. concava 



Orthoceras Strophomena rhomboidalis 



Conularia Chonetes 



Lucina Discina 



Spirifer crispatus Lingula 



So far as our observations extend, the fauna is as follows : 



Cordania gasepiou nov. Orbiculoidea bella {Billings) 



Poleumita princessa {Billings) Lingula artemis Billings 



Platyceras cf. unguiforme Hall L. lucretia Billings 



Kionoceras cf. rhysum nov. Duncanella cf. rudis Girty 



Modiomorpha varia {Billings) Hindia fibrosa {Roemer) 



Leptaena rhomboidalis {Wilcketis) 



These species have largely been derived from the Quay, an extension 



of the cliff which borders Cape Rosier cove and they are for the most part 



diminutive forms. The little and feeble assemblage is in marked contrast 



to the outburst of species in the formation above. 



Hindia fibrosa is in 

 the fauna at Dalhousie, N. 

 B., subsequently considered. 

 Duncanella rudis, Lep- 

 taena rhomboidalis, 



Platyceras unguiforme 

 Cape Bon Ami; elevation 700 feet arespecies of the Hclderberg- 



ian, and Cordania gasepiou is in the Grande Gr^ve fauna. 





/ 



.-u-^^ 



.r^- 



.^- 





The same view with the cliffs much reduced in scale, showing the change which would be produced by an elevation of the land 

 to the so fathom line. Distance from Cape Bon Ami to the old shore line, 8 miles 



