THE MERCHANTVILLE. 



59 



§ 



rt 



> 



Pi 



3 

 O 

 u 



O 



& 

 "a 



S 



Margarita abyssima Gabb 



Sta/a sillmani Mort 



Lunatia halli Gabb 



Amauropsis meekana Whitf 



Turritella lenolensis n. sp 



Pyropsis richardsoni (Tuom.) 



Pyropsis lenolensis n. sp 



Turbinella intermedia n. sp 



Volutomorpha conradi Gabb.? 



Volutoderma biplicata (Gabb) 



Volutoderma woolmani Whitf 



Rostellites texturatus Whitf 



Rostellites nasutus Gabb 



Modulus lapidosus Whitf 



Cancellaria subalta Con 



Cancellaria smocki n. sp 



Morea naticella Gabb _. 



Mortonoceras delawarensis (Mort.) . 



Baculites ovatus Say 



Hoploparia gabbi Pilsb. 



Hoploparia gladiator Pilsb 



Callianassa mortoni Pilsb 



Cancer ? whitfieldi Pilsb 



X 



ANALYTICAI, DISCUSSION OP THE MERCHANTVILLE EAUNA. 



The data recorded in the preceding table may be summarized 

 as follows, to show the number of species common to the Mer- 

 chantviUe and to each of the other formations in the series. 

 Thirty-three of the species or 32 per cent, which have been recog- 

 nized in the MerchantviUe have not been seen in any other hori- 

 zon, which leaves 69 species having a greater range. 



