476 



MOLLUSCA 



SUB-KINGDOM VI 



Phos, Montf. Shell elongate, bucciniform, turriculate ; spire sharp, elevated, 

 whorls ornamented with prominent longitudinal costae, and less salient spiral threads 



and sulci, often varicose. Aperture oblong ; outer 

 margin lirate within. Columella excavated, 

 plicate in front ; canal short, slightly twisted. 

 Tertiary and Recent. 



Eburna, Lam. (Dipsaccus, Klein), (Fig. 965). 

 Resembling Nassa, but smooth, perforate, and \\itli 

 deeply incised sutures ; 

 outer margin sharp. Tertiary 

 and Recent. 



Nassa, Martini (Fig. 

 966). Ovate, inflated. Aper- 

 ture with short, reverted 

 canal ; inner, lip callous, 

 expanded ; outer margin 

 usually crenate internally. 



Sparse in Upper Cretaceous and Eocene, abundant in Miocene 

 and Pliocene ; living species exceeding 200 in number, and dis- 

 tributed in numerous sub-genera. 



Cyclonassa, Agassiz ; Cyllene, Gray ; Truncaria, Adams ; 

 Buccinopsis, Deshayes. Tertiary and Recent. 



Chrysodomus, Swains. (Neptunea, Bolten). Elongate - ovoid, 

 inflated, sometimes sinistral, with rather short and sometimes 

 bent canal. Cretaceous to Recent. G. contrarius, Lam. Crag. 



Siphonalia, Zemira, Metula, 



Adams ; Euthria, Gray ; Hemifusus, Swainson (Fig. 

 967). Tertiary and Recent. Mitraefusus, Genea, 

 Bellardi. Neocene. 



Melongena, Schum. (Pyrula, Lam. p.p. ; Myristica, 



caronis, 



Brongt. sp. Eocene ; 

 Ronca, near Vicenza. 



clathrata 

 Pliocene 

 Larniano, Tuscany. 



PlO, 968. 

 Melongena cornutc, Agassiz. Miocene ; Bordeaux. 



FIG. 9fi9. 

 Tudicla rusticula, Bast. sp. Mio- 



cene ; Grund, near Vienna. 

 Swains.), (Fig. 968). Pyriform, inflated, with short spire. Body whorl large, 



