27() 



"^i^^^ij^- 



below the suture, contiiniiiiji- in nearly a direct or slig-htly 

 cnrvino- 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. 



LoxoxEMA (?) coAPTA. Hall. (Fig. 203.) 

 (Pal. N. Y., Vol. Y., Pt. II.. p. 44. Pi. 

 XIII.) 



Distui^ij;uishin^- Chii meters. — About six 

 volutions to a fragment a little over three- 

 fourths inch long; close, very gradually 

 ascending and slightly convex volutions. 

 Fig. 203. Loxonemair'i Fouud " iu the Cnuoidal* limestone of 



coapta. An imperfect 



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



from Eighteen Mile Creek n I ' n ' 



(«fter Haiu. Erie County, N. Y." ( Hall, type. ) 



LoxoxEMA BREVicun'.M. Hall. (Fig. 204.) (Pal. X. Y., 

 Yol. Y., Pt. II., p. 132, PI. XXYIH.) 



Distinguishing Characters. — Abruptly turriculate spii-e, 

 with five or six moderately convex volu- 

 tions; somewhat raj^id 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 

 FiK 204 Lotonema glialcs of thc Hauiilton iiTou]),at Hambur«", 



bremuluiii Longitud- o i o' 



inai section (after Hall), qu the Shorc of Lake Erie."' (Hall, type.) 



Gexus ECCYLIOMPHALUS. Portloch. 



[Ety. : EccyliompJialus, uurolled 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 one 

 plane, and the lower surface of the whorls roimd. 



ECCYLIOMPHALUS LAXus. (Hall.) (Fig. 205.) (Pal. X. Y., 

 Yol. Y., Pt. II., p. 60, PI. XYI.) 



* Encrinal. 



