^m*£& 



276 



below the suture, continuing in nearly a direct or slightly 

 curving line almost to the base of the volution, and then 

 bending forward to the suture; suture banded. 

 Found in the Strophalosia bed, in Avery's Creek. 



Loxonema (?) coapta. Hall. (Fig. 203.) 

 (Pal. N. Y., Vol. V., Pt. II.. p. 44. PL 

 XIII.) 



Distinguishing ( 'baracters. — About six 

 volutions to a fragment a little over three- 

 fourths inch long; close, very gradually 

 ascending and slightly convex volutions. 

 fig. 203. Loxonema <h Found "in the Crinoidal* limestone of 



cnn/.ta. An imperfect 



specimen in limestone, the Hamilton group, at Eighteen Mile Creek, 



from Eighteen Mile Creek ^ l ' O 



'"'"-'• **>■ Erie County, X. Y." ( Hall, type. ) 



Loxonema breviculum. Hall. ( Fig. 204. ) (Pal. N. Y., 



Vol. V.. Pt. II., p. 132, PI. XXVIII. ) 

 Distinguishing Characters. — Abruptly turriculate spire, 

 with five or six moderately convex volu- 

 tions; somewhat rapid expansion of spire 

 below the apex; more gradual expansion 

 below, the last volution scarcely more ven- 

 tricose than the preceding; broadly sub- 

 elliptical aperture. 



Found "in calcareous concretions in the 

 Fig. 204. Loxonema shales of the Hamilton group, at Hamburg, 



breviculum. Longitud- ° x 



inai section (after Ham on the Shore of Lake Erie." (Hall, type.) 

 Genus ECCYLIOMPHALUS. Portloch. 



[£ty. : Eccyliomphalus, unrolled umbilicus.] 

 (1843 : Geol. Rep. Lond., p. 411.) 



Shell consisting of a few tapering, widely-disconnected 

 whorls, the upper surface of which is usually flattened in our 

 plane, and the lower surface of the whorls round. 



Eccyliomphalus laxus. (Hall.) (Fig. 205.) (Pal.N. Y., 

 Vol. V.. Pt. II.. p. 60. PI. XVI.) 



* Encrinal. 



