GASTROPODA— FULGURIDJE. 



765 



529. T. marylandica Clark and Martin. (Fig. 11 14.) Eocenic. 



Young whorls round, sunken; shoulder of body whorl convex 

 near suture, concave near the strongly spinose angulation. 



Aquia formation of Maryland. 



CLIII. Pyropsis Conrad. 



Differs from Tudicla in its non-papillose apex, and the absence 

 of lirae and columellar plication. Cretacic-Eocenic. 

 530. P. coloradoensis Stanton. (Fig. 11 15.) Cretacic. 



Rather robust ; canal gently curved, umbilicated ; body whorl not 

 abruptly contracted below, biangulate, the angles with small, 

 rounded nodes, both covered in early whorls ; spirals numerous ; 



Fig. 1 1 15. 



(After Stanton.) 



lip with posterior canal producing a slight channeling of the suture. 

 Colorado group (Pugnellus sandstone) of Colorado and Utah? 



531. P. richardsoni (Tuomey). (Fig. 11 16.) Cretacic. 

 Spire depressed, low, often almost flat (angle about 135 ) ; 



shoulder angle strong with irregular flat nodes ; lower angulation 

 fainter, also noded (angulations appear smooth in internal molds) ; 

 spirals numerous, strong, alternating in size, those between the 

 angulations more or less crenate. 



Ripleyan of New Jersey, Alabama, Georgia and Mississippi. 



532. P. trochiformis (Tuomey). (Fig. 1117.) Cretacic. 

 Spire depressed, early volutions almost flat ; body whorl gibbous, 



without angulations, rather abruptly contracted into the anterior 



