CLASS IV 



OASTUOPODA 



561 



and veiy large i)licatio]is, ]»eliiiid (above) wliicli are imintTou.s weaker oiics. Outcr 

 iiiargiii tliickeiied. Tertia ry and Recent. 



Ämpulla Bolten {Halia Risso ; Priamus Beck). No columellar folds. Pliocene and 

 Recent. 



VohUilühes Swains. (Figs. 1035-36). Shell fvisiform, spire elongate-conical; proto- 

 concli small, rising to a more or less acute apex. Whorls costate, typically spinöse. 

 Aperture anteriorly with short broad canal ; columellar folds variable, several in 

 number, tliose toward the anterior being generally the niost pronounced. Abundant 

 in the Cretaceous, Eocene and Oligocene. 



Allied genera : Gosavia Stol.; Leioderma and Rostellites Conrad ; Liopeplum Dali ; 

 Volutoderma (Fig. 103V) and Volutomorpha Gabb. Cretaceous. 



Äthleta Conrad. Spire short, body whorl inflated, posteriorly with a row of 



Fig. 1034. 



Lyria modesta 

 A.Braun. Oligo- 

 cene ; Weinheiin. 



Fig. 1035. 



Volutüithes bicorona 

 (Lam.). Eocene; Cour- 

 tagnon, near Epernay. 



Fig. 1036. 



Volutilithes muricinua Jjam. 

 Calcaire Grossier ; Damery, 

 near Epernay. 



Fig. 1037. 



Volutoderma elon- 

 (jaia d'Orb. Gosau- 

 Cretaceous ; St. Gil- 

 gen, Austria. 



spinous nodes. Inner lip callous, inuch expanded ; columella anteriorly with three 

 strong transverse folds, behind (above) which follow a few weaker ones. Outer 

 margin thickened. Miocene and Pliocene. 



Scaphella Swains. Shell in this genus is elongate-oval or fusiform, solid, broad, and 

 with elevated, turbinate, smooth protoconch. Spire short, longitudinally plicate, the 

 folds being elevated into obtuse tubercles on the base of the whorls. Aperture narrow, 

 canaliculate behind and broad in front ; inner margin often covered by a thin callus. 

 Columella carrying many plaits, four or five of which are prominent, the remainder 

 much smaller. Tertiary and Recent. 



Subgenera : Fulgoraria Schuin. ; Scapha Gray; Zidona Adams; {Volutella d'Orb.); 

 Äuriiiia Adams (FoluHfusus Conrad) ; Caricella Conrad ; Adclomelon and Eucymha Dali, etc. 



Voluta Linn. Spire short, protoconch small. Aperture narrow, inner lip callous, 

 with numerous transverse folds ; outer margin thickened. Tertiary and Recent. 

 Melo Humphr. {Gymbium pars, Bolten). Recent. 



Family 8. Harpidae TroschcL 



hody whorl inflated^ with sharp, uniformly spaced transverse ribs. 

 Aperture wide, with short broad canal. Inner lip callous. Operculum absent. Tertiary 

 and Recent. 



VOL. I 2 



