ART. 30 



EOCENE FOEAMINIFERA — CUSHMAN 



chamber, hollow centered, wall very finely punctate, periphery some- 

 what lobulate. 



Diameter without spines 0.5 mm., with spines nearly 1 mm. 



Tyfe spedmen.—C^t No. 353080, U.S.N.M., from Mexico. Dark 

 gray clay, Eio Tuxpan, crossing of road from Palo Blanco to La 

 Noria and along Eio Pantepec about 200 meters above it's mouth, 

 T. W. Vaughan, Collector. 



This species has much longer spines than any of the otliers. This 

 occurs with OrtJwphragTriina. 



HANTKENINA MEXICANA, new species 



Plate 2, fig. 2 



Description. — Test planospiral, umbilicate, five or six 

 chambers in the adult coil, rapidly elongating as added 

 and peripherally extended to the base of the very large 

 stout hollow spine at the periphery of the cliamber, wall 

 ■coarsely punctate, periphery of test much lobulated. 



Diameter without spines 0.5 mm., with spines 0.75 

 mm. or more. 



Type speci7nen.—C?it. No. 353081, U.S.N.M., from 

 Mexico. Yellowish brown clay. La Laja, Zardo Creek, 

 1 kilometer southwest of Tierra Colorado, T. W. 

 Vaughan, Collector. 



This occurs with Orthophragmina. 



HANTKENINA ALABAMENSIS, new species 



Plate 1, figs. 1-6 ; plate 2, fig. 5 



Haintkenina 

 alabamensi s, 

 new species. 

 Apbrtobal 

 view show- 

 ing the me- 

 DIAN A P El E - 

 TURB AND THE 

 ALAR PROJEC- 

 TIONS FROM IT 

 TOWARD THE 

 BASE. 



Description. — Test planospiral, compressed, adult 

 coil with five or six chambers, periphery very slightly 

 if at all lobulated, wall very finely punctate, smooth, 

 granular near the aperture, each chamber with a hollow, slender, 

 acicular spine at the periphery, pointing somewhat anteriorly ; aper- 

 ture tripartite, with an elongate projection along each side at the 

 base of the apertural face, and the third, median, extending periph- 

 erally from the base of the apertural face. 



Diameter without spines 0.45 mm., with spines 0.75 mm. 



Type specimen.— C&t No. 353082, U.S.N.M., from the Eocene of 

 the Zeuglodon bed at Cocoa post office, Alabama, where it is very 

 abundant. It occurs in other parts of the Coastal Plain in the 

 Upper Eocene. 



There are specimens from Mexico in the United States National 

 Museum collections which seem identical with this species. They are 



