70 



BULLETIN OF THE LABORATORIES 



San^itinolites inichi^anetisis , ^^''" 

 (Plate VIII, Fig. lo. ) 



This species has been a puzzle to me, but Prof. Winchell suggests 

 thai it is his S. michignnensis. The place and date of publication of 

 this species are unknown to me. The resemblance is rather with 

 Pleurophorus or Goniophora a|)parently. Found in the shale below 

 conglomerate II, at Newark. 



Saii^uiiiolites acohts, Meek. 

 (Plate VIII, Figs, t, it.) 



This species is evidently causing some confusion. ^Valcott fig- 

 tires specimens under this name from the Eureka district, which are 

 at le.^st very doubtful. Our own specimens do not present entire 

 agreement, but are not well preserved ; they are derived from the 

 shales below coiigl. II, with Allonsma winchelli. Meek asserts that 

 the stratum referred to is upon the same horizon with that of the Cuy- 

 ahoga shale. In as much as there is some reason to doubt this or to 

 suspect lliat the Cuyahoga contains several horizons higher than this 

 one, all identifications should be made conservatively. We suspect 

 the identity of the specimens figured with the Cuyahoga species and 

 reserve judgement. 



Sangiiinolites ohUqiius, Meek. 

 (Pal. ()., Vol. II, Page 306.) 



This shell is abundant one mile south of Newark, in the shale 

 below congl. II, with Allorisma winchelli. 



The following measurements indicate the typical proportions : 



No. 



Proportions. 



I --34- -^9 



1-.36-.28 

 t-34--^8 



I -•38-- 30 



