Barrett—Coralline Limestone from Montague, New Jersey. 371 
former communication,* and the Tentaculite limestone with its 
two divisions of dark blue and quarry stone occupy the upper 
twenty feet of this cliff, while below the Tentaculite, and pale- 
ontologically connected with it, are nearly horizontal. strata, 
about thirty feet in vertical thickness, apparently referable to 
Water Lime division of the Lower Helderberg group. 
Lying below the Water Lime are fifty feet vertical thickness 
fe which contain species characteristic of the 
Coralline limestone at Schoharie, with a larger proportion of 
Niagara species than are reported from that locality, a few 
Clinton types and some perhaps new or peculiar species, 
hese species as far as identified are as follows: 
Coralline limestone species: Cyathophyllum inequale= Colum- 
naria inequalis, Strophodonta —— = Leptena —— of Plate 74, 
figs. 8a and 384, Pal. N. Y., vol. ii, Ahynchonella lamellata= 
Atrypa lamellata, Meristella nucleolata=(Atrypa) nucleolata, Caly- 
mene camerata; all of which were identified by Mr. Whitfield ; 
Stromatopora constellata, Tellinomya(?) aequilatera and Avicula 
securiformis, identified by myself. oo: 
Niagara species : Halysites agglomeratus, Favosites pyriformis, 
Cladopora seriata, Cyatho Shumardi, Rhynchonella pisa; identi- 
fied by Mr. Whitfield; Halysites catenulatus, Syringopora mul- 
ticaulis, Favosites venustus, F. purasiticus, Stromatopora concen- 
trica, Trematopora tuberculosa, Aulopora precius, Spirorbis wnor- 
it Pholodops ovalis and Ambonychia acutirostra, identified 
y myself. ; 
Cini species: Caninia bilateralis by Mr. Whitfield, Ten- 
taculites minutus and Beyrichia lata by myseli 
A very beautiful Proetus of about the size and general out- 
line, as far as can be conjectured from the fragments in my 
possession, of the P. Si (2), Pal. N. Y., vol. ii, Pl. 67, occurs, 
very rarely, throughout this lower fifty feet. The pygidium is 
subsemicircular, narrowly rounded behind, margined. bes 
subequal, mesial lobe elevated, obtuse posteriorly, number of 
segments thirteen or fourteen, continued backward to the end. 
Surface of the cheeks and margin of the pygidium vermicu- 
i i as known, granulate. Inferior 
marginal portions of the pygidium and cephalic shield incras- 
ith i lize, appearing much as represen 
species doubtfully referred by Professor Hall to the Proetus 
Stokesii of Murchison, but differs very much from the figures 
and description there given. I have named it, provisionally, 
Proetus pachydermatus. 
* This Journal, vol. xiii, pp. 385 and 386. The Stromatopora Limestone is best 
seen at Mr. Sandford Nearpass’s Quarry, ¢ mile northeast of Nearpass s Cliff. 
