154 NEW YORK STATE MUSEUM 



ones between. On the occipital ring the central pustule, which is 

 more conspicuous than the rest as in other species, is punctuated at 

 the top by a circle of depressions. The head had an original length 

 to the point of recurvature of the neck spines of about 40mm, the 

 greatest divergence of the spines is 29mm, the axial length to the 

 angle of the spines, 23mm, of which 9mm belong to the occipital 

 ring; width between the eyes, 25mm. 



From no other evidence have we so satisfactory a basis for the 

 conclusion that the Cap Barre beds follow close below the beds of 

 Perce rock and above those of Mt Joli. We may therefore conclude 

 that either these strata lie buried in the tide-swept interval between 

 the Perce rock and the outermost vertical strata belonging to the 

 Mt Joli massive, or that, originally in place here, they have been 

 pinched out by faulting. 



The space between these two massives not in the line of the con- 

 necting sand spit but rather in the line of vertical thickness of the 

 strata, at right angles to their present position, is barely enough to 

 admit the beds of Cap Barre. Doubtless they have been largely 

 squeezed out in faulting and pitched over on their side where they 

 now lie, though some part of them may remain in the interval, to be 

 exposed by some favoring neap tide to the eye of the trained observer. 



Shales of the North beach. Faintly exposed at spots in the bank 

 along the North beach, in the dugway road to the wharf and at points 

 from there toward Mt Joli are beds of soft shale usually gray, some- 

 times black, blue black and green black, lying under the reddish soil 

 cap. These are slightly inclined away from the vertical and it is 

 not in my present judgment at all certain that they are continuous 

 with the Joli escarpment which we are about to consider. They have 

 furnished no fossils and outside of them, beneath the water not far 

 from the wharf, is a vertical reef in which' cyathophylloid and favosite 

 corals occur and these are doubtless the latest and uppermost beds 

 of the Joli series. Soft drab shales similar to those on the North 

 beach appear also in the roadway between the Cap Canon clifif and 

 the escarpment at Lamb's limekiln, and I have inferred therefrom 

 the presence of an infaulting through which this mass of shales has 

 been displaced from its proper position. 



