305 Crown Point Section 39 



ECCULIOMPHAL US Portlock 



Ecculiomphalus fredericus sp. nov., Pl. iS, fig. 4 



Ver\' loosely coiled, making but one volution; tapering rather 

 abruptly at the apex; test thin, marked by distant lamellose lines 

 of growth; cast rounded, smooth; secftion nearly circular. 



Diameter of largest specimen, 3.5 cm. Greatest diameter of 

 outer coil, i cm. 



Locality. — Found rarely in zones B 7 and C 3, 6, 7. Chazy 

 limestone, Crown Point, N. Y. 



BUCANIA Hall 



Bucania champlainensis Whitfield, PI. iS, figs. 7, 8 



Whitfield's description: "Shell of medium size for the 

 genus, with the outer volution broadly expanded and much thick- 

 ened, being somewhat heart-shaped on the margin of the lip. 

 Inner volutions rounded and involved within the lip of the outer 

 one to the extent of nearly or quite one-third of its diameter, but 

 showing deep umbilical cavities on the sides. Number of volu- 

 tions three or four." 



Our specimens show a broad, fairly deep notch in the lip. 

 The surface is marked b}' numerous lamellose lines of growth 

 which bend backward at the notch, following the contour of 

 the lip. 



Locality. — Common in B 4 and C 9. Chazy limestone, Crown 

 Point, N. Y. 



MA CL UREA Le Sueur 



Maclurea magna Le Sueur, PI. 18, fig. 10 



This chara<fleri3tic fossil of the Chazy is found at Crown 

 Point at the top of section A, all through sedliion B, and in sec- 

 tion C up to zone 14, about 50 feet below the base of the Black 

 River limestone. The specimens occur principally as casts, but 

 many can be obtained which show the surface markings. 



