408 NEW YORK STATE MUSEUM 



PLATE 10 



Genus buchiola Barrande 



Page 2q4 



Buchiola retrostriata v. Buch (sp.) 



Page 295 



i A left valve. X3 



2 Cast of the exterior of a left valve. X3 

 3, 4 Other left valves, xt, 



Naples subprovince Naples 



5 Cardinal view from a replacement showing upturned edge of 

 cardinal area. X5 

 6, 7 Umbonal views of right valves showing the thin upturned 

 edge of the hinge line. X5 



8 Interior view of the cardinal region. X5 



Naples subprovince Honeoye lake 



9 Conjoined valves. X3 



10 Conjoined valves of a much smaller shell. x6 

 1 1 A right valve with structure and ornamentation sharply 

 defined. X3 



12 Small valves expanded in conjunction. x6 



Naples subprovince Naples and vicinity 



13 Anterior view of a replacement with the valves in normal 



apposition, xio 



Naples subprovince Honeoye lake 



14 Enlargement of a marginal part of the ribs on which the 



recurved lines are very fine. X3 



Genesee shale Canandaigua lake 



Buchiola hal i sp. nov. 



Page 301 



15 The specimen termed Glyptocardia speciosa [Pal. 



N.Y. v. 5, pt 1, pi. 70, fig. 9] redrawn. X3. This is the type 



of B. h a 1 1 i . 



Marcellus shale Skaneateles 





