- P40 - 



SPONDYIUS (SOHTrv^^'^S var?) II-OIKIiirJS n. sp.? 



Description .- Shell small, equilateral, well inflate"!, high- 

 er than wide; lunho inconspicuous; right valve sculptured vi'ith ele- 

 ven or twelve radials, bearing closely-spaced spines, the spines 

 very long for the size of the shell and slightly ciirved, occasion- 

 ally giving place to broad, irregularly curled, transverse scales, 

 extending across one or more of the primary radials; between the 

 prinsry radials poorly defined radial rov/s of small irregularly 

 spaced scales present, the rows interrupted by the transgression 

 of the broad scales; auricles not nrominent, their surface rough- 

 ened or bearing a few snines; crura prominent for the size of the 

 shell; inner surface of the valve with irregular crenulations of 

 two orders, the lorimary ones, corresponding to the external inter- 

 costal spaces^ extendinf? up toward the iirabo as inconspicuous im- 

 clulations; left valve not known. 



Dir>ie ns1ons .- Lat., 10 mm.; alt., 11.8 mm.; diara., S mm.; 

 length of hinp-e, 5.5 ram. 



?emarkvq .- One of the surprising features of the fauna is 

 the presence of this small, beatifully sculptiired valve among the 

 many ponderous shells. Although very small, it is remarkably 

 close to the recent Antillean 3_» eol^inatus (Liartyn) /I), which 



