246 CRETACEOUS PALEONTOLOGY. 



1884. Cristellaria wetherelKi Brady , Chal. Rept., vol. ix, p. 537, 



pi. cxiv, fig. 14. 

 1898. Cristellaria wether ellii Bagg-, Bull. U. S. G. S., No. 88, 



P- 59- 

 1898. Cristellaria wetherellii Bagg, Bull. Am. Pal., vol 2, No. 



10, p. 27 (321). 



1904. Cristellaria wetherellii Bagg, Md. Geol. Surv., Miocene, 



P- 475, Pl- 132, fig. 16. 



D.escription: — "Test elongate, pod-like, compressed; primordial 

 segments spiral, ultimate segments straight, evolute; surface 

 marked by large tubercles more or less regular and crossing the 

 shell surface like septal ridges; aperture round, at the end of a 

 somewhat prolonged neck. 



"Length, 1.56 mm. ; breadth, 0.5 mm." (Bagg.) 



Remarks. — "The above species is rare at Vincentown. Dr. 

 Woodward, states that it is rare at MuUica Hill, but common 

 at Timber Creek." (Bagg.) 



Formation and locality. — ^Vincentown limesand, Vincentown, 

 Mullica Hill, Timber Creek (Bagg). 



Geographic distribution. — New Jersey ; Miocene of Maryland. 



Genus Fi,abellina d'Orbigny. 

 Flabellina cordata Reuss. 



1845. Flabellina cordata Reuss; Verstein. bohm. Kreide, pt. i. 



p. 32, pl. viii, figs. 37-46, 78. 

 1854. Flabellina cordata Reuss, Denks. Akad. Wiss. Wien, vol. 



vii, p. 67, pl. XXV, figs. 6-8. 

 1898. Flabellina cordata Bagg, Bull. U. S. G. S., No. 88, p. 59. 



Description. — "Test broadly ovate or heart-shaped, compla- 

 nate, with numerous narrow, elongated chambers; primordial 

 chamber somewhat elevated and more or less globular, succeed- 

 ing chambers at first flabelline, later Frondicularia-like ; anterior 

 extremity wedge-like with gently curving sides, posterior border 

 much wider than in Flabellina sagittaria and differing froin that 

 species in the irregularity of the basal margin caused by the 



