Maryland Geological Survey 461 



between the body of the volution and the anterior beak, so that the shell 

 is of a wedge-shaped form below the periphery. It somewhat closely 

 resembles P. newberryi Meek and Hayden." — Whitfield, 1892. 



Type Locality. — Freehold, New Jersey. 



Occurrence. — Monmouth Formation. Brightseat, Prince George's 

 County. 



Collections. — Maryland Geological Survey, Philadelphia Academy of 

 Natural Sciences. 



Outside Distribution. — Monmouth Formation. New Jersey. 



Pyrifusus whitfieldi n. sp. 

 Plate XIV, Fig. 5 



Description. — Shell rather thick, of average size for the genus ; broadly 

 elliptical in outline, the maximum diameter falling near the median hori- 

 zontal ; whorls probably five or six in number, very closely sub scalar if orm 

 in outline, the shoulder of the whorl occurring in front of the closely 

 appressed band and not at the extreme posterior margin of the volution ; 

 body Avhorl ovate in outline, obliquely constricted basally ; external sculp- 

 ture ornate, axials narrow, rounded riblets, nineteen to twenty-one in 

 number upon the later turns, separated by concave intercostals, persistent 

 from suture to suture upon the spire, though partially dissected at the 

 fasciole, evanescent on the body whorl at the fasciole before reaching the 

 base; spiral sculpture uniform in general character over the entire sur- 

 face; spirals broad, flattened fillets overriding the costals separated by 

 slightly narrower interspiral areas ± 6 in number on the later whorls of 

 the spire and 16 on the body whorl, including the two less prominent lira; 

 upon the fasciole ; aperture imperfect, lenticular in outline, the outer lip 

 broken in the type; inner margin smoothly concave; the pillar flattened 

 and non-plicate ; anterior canal short, broad, ill-differentiated, its anterior 

 extremity broken in the type. 



Dimensions (imperfect specimen). — Altitude 29 mm., maximum diam- 

 eter 23 mm. 



This species is best characterized by the numerous undulatory axials 

 and the fillets which are wound about it from the apex to the base of the 

 pillar. 

 30 



