GASTROPODA— FULGURIDJE. 



767 



534. P. octolirata (Conrad). Cretacic. 

 Like the preceding but body whorl somewhat more abruptly con- 

 tracted ; without sutural flattening or ribs, though one of the 8 

 or 9 spirals is slightly noded. 



Ripleyan of New Jersey and Mississippi. 



CLIV. Perissolax Gabb. 



Spire conical and smooth; canal long; last whorl inflated; bian- 

 gular, and ornamented by ribs and spirals ; columella without plaits. 

 Differs from Pyropsis chiefly in its long spire. Cretacic. 



535. P. brevirostris Gabb. (Fig. 1119.) Cretacic. 



Fig. 1 1 18. Pyropsis whitfieldi. (After 

 Whitfield. ) 



FlG. 1 119. Perissolax brevirostris, 

 nat. size. ( After Gabb. ) 



Shoulders of whorls flat, spiraled, whorls embracing to shoulder 

 angle, forming conical spire of nearly 90 apical angle. Last whorl 

 with two strong angulations, a third towards the end; traversed 

 by distant, narrow ribs which are nodose on the angles. 



Nanaimo group of Vancouver; Chico of California. 



CLV. Fulgur Montford. 



Whorls (except very young) angulate with flat shoulder and 

 nodose or spinose angulation; rarely round and smooth whorls 

 generally embracing to shoulder angle; aperture not abruptly 

 contracted, but canal long. Protoconch oblique, smooth. Eo- 

 cenic( ?)-Recent. 



