UNIVALVES. BUCCINUM. 99 



DIVISION IV. SHELL WITH AN EXSERTED REFLECTED BEAK, 



PILLAR-LIP SPREAD, AND THE OUTER LIP 

 UNARMED OUTWARDLY. 



FAMILY 1. With the spire truncated, aperture rather linear, 

 pillar-lip much spread, the pillar slightly wrinkled, and outer 

 lip thickened. 



Cornutum Wrinkled Helmet. Flammeum Triangular. 



Plicatum Plaited. Rufum Red. 



Tuber osum-Zic-zag. Testiculus Purse. 



FAMILY 2. With the spire rather elevated, pillar-lip thinly 



spread, pillar slightly wrinkled, and outer lip thickened. 

 Decussatum Decussated. Strigatum Yellow-striped. 



Areola Draft-board. Saburon Grey. 



Abbreviatum Shortened. 



FAMILY 3. Resembling the second, except having the pillar-Up 



granulated. 

 Granulatum Granulated. Undulatum Undulated. 



FAMILY 4. Resembling the third, but having the pillar-Up granu- 

 lated and wrinkled. 



Inflation Inflated. * Bilineatum Smooth-net. 



Tessellatum Tessellated. Cicatricosum Cicatrix. 



FAMILY 5. With the pillar-lip smooth. 

 Recurvirostrurn Recurved beak. Cassis Helmet. 



DIVISION V. SHELL RESEMBLING THE LAST DIVISION, BUT 



THE OUTER LIP, ON THE OUTSIDE, IS MURICATED 

 AT THE BASE. 



FAMILY l.With the spire short. 

 Erinaceus Hedgehog. Fimbria Bordered. 



Biarmatum Knobbed. Glaucum Yellow. 



Vibex Agate. 



FAMILY 2. With the spire elevated. 

 PapiHosum Prickly-lip. Mutabile Changeable. 



Glans Thread-girded. Gibbum Hunchbacked. 



F2 



