68o CRETACEOUS PALEONTOLOGY. 



The specimens from the Vincentown Hmesand which Whitfield 

 has referred to L. halli are too imperfectly preserved to allow of 

 certain identification, but they are probably distinct from, the 

 Navesink examples. 



Formation and locality. — Merchantville clay-marl, Lenola 

 (163); Wenonah sand, near Crawfords Corner (126^), near 

 Marlboro (130^); Navesink marl, Atlantic Highlands (108), 

 Middletown (113^), near Red Bank (120), near Crawfords Cor- 

 ner (126^), near Holmdel (128^), near Freehold (133), near 

 Walnford (148^), Crosswicks Creek (149, 147^, 147*, 195), near 

 Jacobstown (150), near Mount Laurel (166), Mullica Hill 

 (169"). 



Geographic distribution. — New Jersey, Alabama, Mississippi. 



Lunatia 7 pauperata (WMtfield). 



Plate LXXVI., Figs. 20-23. 



1892. Scalaria ? pauperata Whitf., Pal. N. J., vol. 2 (Monog. 

 U. S. G. S., vol. 18), p. 141, pi. 18, figs. 3-7. 



Description. — Shell of medium size, the dimensions of the 

 larger of the two' type specimens being : height, 24 mm. ; maxi- 

 mum diameter, 19 mm.; height of aperture, 14.2 mm.; width 

 of aperture, 10 mm. Volutions rounded, about four in number, 

 separated in the casts by distinct and deeply marked sutures; 

 spire elevated, the apical angle 70°- 80°, the last volution form- 

 ing one-half or more than one-half the entire height of the shell. 

 Aperture subovate, rounded below, slightly more pointed above, 

 the inner margin straighter than the outer. External surface 

 characters of the shell not known. 



Remarks. — Whitfield has included two distinct forms among 

 the types of this species, the specimen imperfectly showing the 

 surface characters being quite distinct from the one which is en- 

 tirely a cast. Neither of the shells can be referred to' the genus 

 Scala. The cast, represented by Whitfield's figures 5 and 6, 

 is taken as the type of the species pau-perata^ as the original de- 

 scription was largely made from that specimen, but it is here 



