PTEROPODS. 219 



Conularia crustula WHITE. 

 Plate xxxv, fig. 2. 



Conularia crustula White, 1883: U. S. Geol. and Geog. Sur. Terr., 12th 

 Ann. Rep., p. 170, pi. xlii, fig. 4. 



Shell rather small, having the usual four- sided pyramidal 

 form the four sides being equal, and flat or nearly so near the 

 apex, but slightly convex toward the aperture ; the four angles 

 distinctly furrowed, and a slender furrow also marks the me- 

 dian line of each side, which furrow is more distinct upon the 

 cast of the interior than upon the exterior surface of the test. 

 Surface marked by the numerous transverse, raised striae, 

 common to this genus, which arch gently forward from each 

 of the four angles; the majority of the striae are continuous 

 across the median line of the sides, and also across the angle- 

 furrows, in crossing which they bend slightly backward. 

 ( White.) 



Horizon and localities Upper Carboniferous, Upper Coal 

 Measures : Kansas City. 



