EULIMELLA. 233 



Sub.-gen. paethenia, Lowe. 



Shell subovate ; whorls longitudinally more or less ribbed ; 

 columella denticulate or furnished with a plait. 



decussata, Mont. interstincta, Mont. 



excavata, Phil. spiralis, Mont. 



Sub-gen. AURicuLfNA, Gray. 



Shell ovate, thin, ventricose, whorls simple or concentrically 

 striated ; columella edentulate, without a plait. 



cylindrica, Alder. obliqua, Alder. 



diaphana, Jeffr. Warreuii, Thomp. 



insculpta, Mont. 



Genus EULIMELLA, Forbes. 



Shell elongated, of many whorls, solid, smootli, po- 

 lished ; apex of spire with a persistent, embryonic, sinis- 

 tral shell ; aperture subquadrate, peristome incomplete ; 

 columella straight, not plicate or toothed. 



Ex. E. Scillae, Scacchi, pi. '24, fig. 8. Shell, E. 

 Scillge, fig. 8, a. 



The animal of EiiUmella resembles that of Turho- 

 nilla ; the shell may be known from Pyramidella and 

 Obeliscus by the simple, straight columella, and from 

 Turhonilla in not being ribbed. 



Species of Eulimella. 



acicula, Phil. clavula, Loven. 



affiuis, Phil. Scillae, Scacchi. 



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