358 BULLETIN OF THE 
For lingual dentition, see Heynemann, Malak, Blatt., X., Pl. IT. Fig. 5. 
The body is distinguished by two lateral grooves, 
Daudebardia, Hartm.  (Helicophanta, Fér.) Animal limaciform, sub- 
cylindrical, tapering anteriorly : tentacles simple: mantle small, posterior, 
quite near tail, covered with a small, external shell: longitudinal furrows 
above the margin of the foot? no caudal mucus pore: distinct locomotive disk ? 
external respiratory and anal orifice at the posterior right margin of mantle, 
under the peristome of the shell; generative orifice ? 
Shell small, external, perforate, depressed : paucispiral, whorls rapidly in- 
creasing. 
No jaw. 
Lingual membrane 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, ۰ 
For anatomy, see Fischer, J ourn. de Conch., V. 13, 
The body has two lateral and two dorsal grooves. 
Vaginulus, Sron, (Vaginula and Veronicella, part, of authors.) Animal 
limaciform, subcylindrical, high on the back, slender and pointed at tail : 
tentacles 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, eto. 
For a figure of the animal, see Voyage de la Bonite, Pl. 28, Figs. 4-7, V. 
Tourannensis. For a notice of the agnathous genus as restricted from Veroni- 
cella, see Stolieska, Journ. Asiatic Soc. Bengal, 2d series, Vol. XLII. No. 
CLXXXI. p. 33. 
Chlamydephorus, W, Œ. Bryn, 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 near 
the same point enclosing ashelly 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 ? 
‘Shell-plate internal, flat, white, testaceous, heavy, subhexagonal, small. 
No jaw: 
