48 FLORIDA GEOLOGICAL SURVEY-15TH ANNUAL REPORT
 Type (Cat. No. 352275 U. S. N. M.) ; This measures: length of left valve 12.4 mm.; height 8.5 mm.; diameter (double) 6 mm.
 Geologic horizon: Probably Miocene.
 Locality: Well at Kissimmee, Osceola Co., Fla., (depth 65-100 ft.). G. C. Matson, collector, 1908.
 Discussion: The thinness of the shell approaches C. catlzaria DalI, but in the new species the posterior angled edge is less drawn out, the disk is more rounded and the shell more nearly equilateral. The shape of the shell resembles C. vaughani Dall, hut the latter is much heavier and more robust in every way. I am unable to find a very close relative to the described species.



 EXPLANATION OF PLATE I

 Fig. 1. Cmcurm putnamensis n. sp. Cotype, (x 10). U. S. N. M. Cat. No. 352277.
 Fig. 2. Cwcum putnamensis n. sp. Cotype, (x 10). U. S. N. M. Cat. No. 352276.
 Fig. 3. Columbella (Alia) matsoni n. sp. Ventral view, Type (x 3). Fig. 4. Columbella (Alia) matsoni n. sp. Dorsal view, Type (x 3). Nucleus
 restored.
Fig. 5. Corbula inaqualis Say, var. A. Exterior of right valve (x 2). Station
 5869, DeLand, Fla., (stratum No. 3). U. S. N. M. Cat. No. 352286.
Fig. 6. Corbula inxqualis Say, var. A. Exterior of left valve of another specimen (x2). Station 5869, DeLand, Fla., (stratum No. 3). U. S. N. M. Cat.
 No. 352286.
Fig. 7. Corbula inoequalis Say, var. B. Exterior of left valve (x 2). Station
 5869, DeLand, Fla., (stratum No. 3). U. S. N. M. Cat. No. 352287.
Fig. 8. Corbula inxqualis Say, var. B. Exterior of right valve (x 2). Station
 5869, (stratum No. 3). U. S. N. M. Cat. No. 352287.
Fig. 9. Terebra (Acus) kissimme~nsis n. sp. Larger cotype (x 3). Fig. 10. Terebra (Acus)kissimme~nsis n. sp. Smaller cotype (x 5). Fig. 11. Cardita (Carditamera) osceola~nsis n. sp. Exterior of left valve. Type
 (x 3).
Fig. 12. Cardita (Carditamera) osceola~nsis n. sp. Interior of left valve. Type
 (x 3).
Fig. 13. Area transversa Say. Light form. Exterior of left valve (x 1 .Station 5869, DeLand, Fla., (stratum No. 3). U. S. N. M. Cat. No. 352281.
Fig. 14. Arca traosversa Say. Light form. Right valve of another specimen
 (x 11/2). Station 5869, DeLand, Fla., (stratum No. 3). U., S. N. M. Cat. No.
 352281.