358 BULLETIN OF THE 



For lingual dentition, see Heynemann, Malak, Blatt., X., PL II. Fig. 5. 

 The boilv is distinguished by two lateral grooves. 



Daudebardia, Hartm. (Helicophania, Fer.) Animal liraaciform, . sub- 

 cylindrical, tapering anteriorly : tentacles simple : mantle small, posterior, 

 quite near tail, covered -svith a small, external shell : longitudinal furrows 

 above the margin of the foot ? no caudal mucus pore: distinct locomotive disk ? 

 external respii-atory and anal orifice at the posterior right margin of mantle, 

 imder the Y>eristome of the shell : generative orifice ? 



Shell small, external, perforate, depressed : paucispiral, whorls rapidly in- 

 creasing. 



No jaw. 



Lingual m.embrane without central teeth. ; other teeth all aculeate, apex 

 simple. 



Germany, Hungary, Switzerland, Northern Italy. 



For figure of animal and shell, see H. and A. Adams, Gen. Rec. Moll. 



For dentition, see Goldfuss, Naturh. Vereins der Preuss. Rheinl. und West- 

 phalens, 1856, PL VI. Figs. C, C. 



For anatomy, see Fischer, Joum. de Conch., V. 13. 



The body has two lateral and two dorsal grooves. 



Vaginulus, Stol. (Vaginula and Veronicella, part, of authors.) Animal 

 limaciform, subcylindrical, high on the back, slender and pointed at tail : 

 tentiicles bifid : mantle covering the whole back : no longitudinal furrows 

 above the margin of the foot, and no caudal mucus pore : no distinct locomo- 

 tive disk ? external anal and respiratory orifice at the lower right side of the 

 mantle, about two fifths of the length of the body distant from the front : 

 generative orifices distinct, the female with the respiratory orifice as above 

 described, the male orifice behind and below the right eye-peduncle. 



No shelL 



No jaw. 



Lingual membrane short : teeth aculeate. 



Cochin China, etc. 



For a figure of the animal, see Voyage de la Bonite, PL 28, Figs. 4-7, V. 

 Tonrannensis. For a notice of the agnathous genus as restricted from Veroni- 

 cella, see Sfolicska, Joum. Asiatic Soc. Bengal, 2d series, VoL XLII. No. 

 CLXXXI. p. 3.3. 



ChlamydephoruB, W. G. Binn. Animal limaciform, subcylindrical, taper- 

 ing anteriorly : tentacles simple ? mantle covering the whole back, with an 

 orifice on its upper surface, near the tail, with radiating granulations, and nejir 

 the same point enclosing a .«helly plate : longitudinal furrows above the margin 

 of the foot, meeting over a caudal mucus pore : distinct locomotive disk ? ex- 

 ternal respiratory and anal orifice at the opening on the back ? generative ori- 

 fice or orifices ? 



Sliell-i)late internal, flat, white, testaceous, heavy, subhexagonal, srnaU. 



No jaw. 



