596 



NEW YORK STATE MUSEUM 



Oncoceras pristinum sp. nov. 



Page 503 



1 Natural section of specimen showing cameras, siphuncle and liv- 



ing chamber 



2 Natural, slightly oblique section of another specimen 



The originals are from the upper Chazy limestone (C 6 of Brainerd 

 and Seely's section) at Chazv village, and now in the New York 

 State Museum 



Cyrtactinoceras champlainense sp. nov. 



Page 491 

 See pi. 36, fig. 1, 2 



3 Section of a specimen, showing the shallow chambers and septa 



and the small nummuloidal siphuncle. The straight bounding 

 lines of the siphuncle have been drawn in by error 

 The original is from the dove-colored Chazy limestone west of Little 



Monty bay, south of Chazv N. Y., and now in the New York 



State Museum. 



Ooceras (?) perkinsi sp. nov. 



Page 4 9 



4, 5 Two views of the type (see section of same in text figure 53). 

 The original is supposed to have come from the dove-colored upper 



Chazy limestone (see page 401) of Isle La Motte and is now in 



the museum of Burlington University. 



Loxoceras moniliforme Hall (sp.) 



Page 487 



6 Reproduction of the type of the species, illustrated in Palaeontol- 



ogy of AVta' York, volume 1, plate 7, figure 5, where the septa 

 are not shown and the siphuncle is wrongly figured 



7 A specimen showing the exterior of the wall and the submarginal 



position of the siphuncle 



8 A specimen exhibiting the sutures and in its section the depth of 



the cameras and of the septa, and the siphuncle 



9 Natural section of a younger portion of a conch exhibiting a some- 



what closer arrangement of the septa 

 The type of figure 7 is from the upper Chazy (C t! ) near Chazy 

 N. Y., that of figure 8 from the middle Chazy (B 4 ) near Chazy 

 N. Y. and that of figure 9 was found loose in the Saranac river 

 and is from an unknown horizon of the Chazy formation. The 

 originals of the last three mentioned are in the New York State 

 Museum. 



