BUCCINID^, 141 



intended to be ranged in the Fusinse, but I think its general 

 appearance decidedly that of Busycon or Tudicla. Cretaceous 

 to Eocene. P. brevirostris, G&hh (\i,bd). Cretaceous; California. 

 LEViFUSUS, Conrad, is generally considered synon3anous with 

 Perissolax. It is an uncharacterized Eocene form. P.traheatus^ 

 Conr, Eocene ; Alabama. 



Ftjsispira, Hall. 



Distr. — F. ventricosa^ Hall (li, 50). Trenton Limestone, near 

 Green Bay. So far as known, this palaeozoic genus is confined to 

 the Quebec, Ti'enton and Hudson River groups. 



Shell fusiform, imperforate, spire more or less elevated, with 

 rounded volutions ; aperture elongate, oval or elliptical, produced 

 below, forming a subrimate canal ; columella slightl}^ twisted, 

 without folds, peristome sharp. Surface smooth. 



Closteriscus, Meek. 



Distr. — G. tenuilineatus, Meek (li, 51). Cretaceous ; Cheyenne 

 Riv., Dakotah. 



Shell thin, fusiform ; spire slender, longer than aperture and 

 canal ; surface smooth or minutely striate ; aperture rhombic, 

 outer lip broadly retreating above the middle, thin, excepting at 

 irregular intervals, where it became thickened and denticulate 

 within, so as to leave internal varices behind as the shell advanced 

 in growth ; inner lip very thin, or wanting ; columella smooth (?). 



PATi^ATRACTUS, Gabb. 



Distr. — P. crassuSj Gabb (li, 52). Cretaceous; California. 



Pyriform, thick ; spire low ; columella slightly twisted ; outer 

 lip simple, inner lip incrusted. Surface heavily ribbed or can- 

 cellate. 



Pyrifusus, Conrad. 



Distr. — P. subdensatus^ Com: (l\^ 53). Cretaceous; Mississippi! 



Pyrifoi'm ; columella broad, thick, flattened ; body-volution 

 transversely oval, compressed dorso-ventrally. 



NEPTUNELLA, Meek. Body-volution rounded ; columella not 

 flattened ; spire more elevated ; outer lip broadly sinuous above 

 the middle. P. Newberryi, Meek and Haj^den (li, 54). Creta- 

 ceous ; Dakotah. 



Hercorhyncus, Conrad. 



Distr. — H. Tippana^ Conr. (li, 55). Cretaceous ; Mississippi. 



Shell fusiform; spire prominent, scalariform, longitudinally 

 ribbed and tuberculated, or with tubercles only ; top depressed 

 above the angle or shoulder of the last whorl, which depression 

 becomes angular at the aperture, emarginating the upper part of 

 the labrum ; last whorl broad and rather abruptly rounded at 

 base ; beak abruptly recurved and produced. 



