PLATE LXV. 



r 



NAtrriLns (DreciTEs) Marcellensis. 



Pago 423. : 

 See Plate 109. 



Fig. 1. A lateral view of an internal cast of a large individual of the species, showing the air-chambers, the 

 anterior extension of the septa on the penpheral angles, and some irregularity in the distribu- 

 tion of the nodes. The grand chamber is nearly entire. 



Rg. 2. A cast of the interior preserving the grand chamber nearly entire, with a single volution of the sep- 

 tate portion of the shell. The chambers of the inner volution are slightly deeper than in the 

 pi-eceding specimen, and the chamber of habitati»n is more rapidly ojcpanding. The nodes 

 on the peripheral angles ai-e not so strong as in the specimen fig. 1. Both specimens ai-e from 

 the Goniatite limestone of the Marcellus shale. Near Manlius, N. T. 



