Pris. 



744 





WhafdA 



Primitia seelyi, Whitfield. Bulletin of Amer. Mus., N. 



Y., Vol. 2, No. 2, page 60, pjate 

 13, fi^. 6, enlarged four times ^ 

 right valves with profiles; fig. 7, 

 magni/ied crust, showing the pits 

 with granules in them. A dark 

 blue layer of crystalline lime- 

 stone, atShoreham, Vt., and water 

 worn fragments of granular limestone from Providence Island, 

 Lake Ohamplain, are largely composed of them. Perhaps the 

 same as the Fort Oassin rocks (Seeley.) — Calcif. SSJ II a f 



Other species are i^. acadioa; xqualis ; oincinnitiensis ; 

 concinna; logani; leperditloides ; mundula; muta; reni- 

 formis; rugidifera; scaphoides; and sigillata. See S. A. 

 Miller's Geo, and Pal. of N. A. 1890. 



Prismopora dilatata, Hall, Trans. Alb. Inst., 1881; State 



Hall. PaL o^c^ 



'if Qi > 







Kt. for 1883; Pal. N. Y., Vol. 6,1887, page 265, plate 02, 

 naU 8ize^ a fragment ; 14, enlarged six times. Madison 

 Y. Hamilton. VIII e. 



fig 13, 

 Co., N. 



Pristacanthus vetustus, a most remarkable and most 



7 ancient -fish 

 spine., fig- 

 ured of nat- 

 ural size by 

 Clarke in 



Clk. BJ6. — ="»^ -^-- ^rr---fr » «.n B i ^-W TOF--» .>^>^B^ 1 . BU 11 . NO. IG, 



D. S. Geol. Sur. 1885, page 42, plate 1, fig. 7, a fragment, with 

 14 notches, points backward; exceedingly thin, smooth, almost 

 flat, granulated ; a unique example; the earliest known fossil 

 specimen of this genus; from the Naples{ Upper Genesee) Hack 

 shales in the Sparta RK. cut, which have yielded many other 

 undetermined fish scales and plates. — VIII 6. 



