ABT. 19 FOEAMINIFEEA FROM TENNESSEE BEERY AND KELLEY 9 



fourth chambers and becoming fainter on the younger parts of the 

 test, the most pronounced being three each on the periferal and 

 proximal edges which continue unabated in relief throughout the 

 test ; sutures slightly depressed, nearly straight ; wall hyaline, highly 

 transparent condition of the test shows the intercameral walls to be 

 broad, thick; aperture radiate, round, terminal on a slight projection 

 at the junction of the apertural face and periferal edge. 



Length, 1.38 mm. 



This species is somewhat like one found by Sandige, (MS.), in the 

 Ripley of Alabama, but has a greater number of chambers and is 

 more transparent. It is very rare in the Coon Creek material, but 

 when present is very noticeable and easily identified. 



Holotype.—Q^i. No. 73676, U.S.N.M. 



Genus FRONDICULARIA Defrance, 1824 



FRONDICULARIA ANGUSTISSIMA Reuss 



Plate 1, Figure 10 



Frondicularia angustissima Ruess, Marsson, Die Foraminifera der Sclireib- 

 keide de Insel Riigen 1877.— Eggek, Abh. d. II, CI. d. k. Akad. d. Wiss., XXI, 

 vol. 1, Abth. 1902. 



Test elongate, evenly compressed, slightly wider near the apertural 

 end, rectangular in traverse section; chambers few &-7 in number, 

 bearing a blunt apical spine and 4 or 5 distinct longitudinal costae, 

 later chambers chevron-shaped, last one drawn out to a neck bearing 

 a ball-shaped aperture; sutures distinct, raised, forming inverted 

 V's; wall smooth, transparent, glossj^; aperture terminal at the end 

 of the neck on the small sphere, produced, round, radiate. 



Length, 1.05 mm. 



This species, which is extremely rare in the Coon Creek material, 

 is only reported from the Cretaceous. It should prove a good horizon 

 marker if it is present in large enough numbers to be readily found. 

 It is the only occurrence of the species in the Cretaceous of the 

 United States, so far as I know. 



Plesioty 2)6. —C^t. No. 73677, U.S.N.M. 



Genus POLYMORPHINA d'Orbigny, 1826 



POLYMORPHINA LACTEA (Walker and Jacob) 



Plate 1, Figure 12 



Serpula lactea Waxker and Jacob (according to Kaumacher), 1794, Adam's 



Essays, ed. 2, p. 634, pi. 14, fig. 4. 

 Polymorphlna lactea Macgillivray 1843, Moll. Aberdeen, p. 320. — H. B. 



Brady, Rept. Voy. Challenger, Zoology, vol. 9, p. 559, pi. 71, figs'. 11, 14. 



Test small, rounded to ovate, front view circular; chambers 

 elongate, few, usually 3-4; sutures distinct even, slightly limbate; 

 wall smooth ; aperture terminal, radial, slightly elevated. 



Length, 0.56 mm. 

 64437—29 2 



