60 DAPHXELLA, 



'where they cross the larger spiral lirae, and especially at the 

 periphery, teeth-like tubercles result. Aperture narrow ; outer 

 margin thick, dentate within, varicose, produced, the anterior 

 portion bent and partly encircling the short canal; sinus sutural, 

 very conspicuous, deep and bordered by the posterior extension 

 of the outer margin, which covers the suture in that region, and is 

 reflected towards the thin enamel of the inner margin ; a prominent 

 denticle is placed on the latter near the sinus ; columella somewhat 

 excavated, sharply twisted anteriorly. 



This species differs from M. lidens in being more elongate, the 

 spire is much longer in proportion to the aperture, is narrower, 

 the columella is more sharply twisted ; the longitudinal costse are 

 not so conspicuous, the subangulation at the periphery is more 

 towards the centre of the whorls, and the surface of the shell 

 between that and the suture is more sloping. The shell as a whole 

 is not so rugged. 



Dimensions. — Length 9 mm. ; breadth 4 mm. ; length of aperture 

 4-5 mm. 



Foi'm. and Loc. — Eocene (?) : Muddy Creek, Victoria. 



G. 4204. Two specimens. Presented ly John Bennant, Esq. 



Genus DAPHNEL.LA, Hinds. 

 [In Belcher, Voy. " Sulphur," Mollusca, vol. ii. 1844, p. 25.] 



Shell thin, fusiform ; whorls convex ; body -whorl usually 

 elongate, surface finely cancellated; outer margin slightly curved, 

 broad shallow sinus near the suture ; columella excavated ; canal 

 short, truncate. 



None of the species here described are typical examples of the 

 genus ; they appear to be intermediate between Baphnella {seiisu 

 strido) and its subgenus Pleuroiotnella, Yerrill. They are not 

 included in the latter, by reason of the sinus not being deep enough, 

 and from the absence of the "smooth concave surface" between 

 the shoulder of the whorls and the suture. By some authors they 

 would possibly be classified with Bela ; that genus, however, 

 appears to be much misunderstood. It does not seem to be 

 recognized that the type of Bela (Leach MS.), Gray,' is Murex 



' Proc. Zool. Soc. 1847, p. 134. 



