202 EULOTA. 



Species. Flagellum. Dart sack. Acccs. sack. Mucus gl. branches 



Eulota fruticum, absent, inserted high, present, 2 to 4. 

 Eulotella similaris, absent, inserted low, absent, 2 sub-dividing. 

 Eulotella fodiens, absent, inserted high, present, 2 sub-dividing. 

 Eulotelladuplocincta absent, inserted low, present, 6 sub-dividing. 

 Acustatourannensis, absent, inserted high, ? sev'ral br'nches 

 Acusta ravida, absent, inserted high, present, sev'r'l coal'sc'nt 



Cathaicapyrrhozona, absent, inserted low, absent, many br'nches. 

 Cathaica przewalskii, ? inserted low, ? 2-branched. 

 Plectotropis vulv. present, inserted low, absent, 2-branched. 

 Mastigeulota kiang., present, inserted low, present, many br'nches. 

 Euhadra qusesita, present, inserted low, present, many. 

 Euhadra peliornph. present, inserted low, present, many. 

 Euhadra brandti, present, inserted low, present, many. 



It will be noticed that Plectotropis, Mastigeulota and Euhadra 

 possess a flagellum ; the other sections lacking it, probably by de- 

 generation, as this organ was, in all likelihood, present in the primi- 

 tive Belogonous stock. Among the true Helices Eremina and 

 Euparypha have also lost the flagellum, by a parallel process. 



Section Eulota Hartrnann, 1842. 



Eulota HARTM., Erd- und Siisswasser-Gast. Schweiz, p. 179, type 

 H. fruticum. Helicella and Fruticicola, in part, of some authors. 

 Bradybcena, in part, BECK. Eulotella MOUSSON (where ?) of some 

 authors, type H. similaris Fer. Acusta ALB., Die Hel., 1860, p. 56, 

 type H. ravida Bens. 



Shell globose-conoid or globose-depressed, umbilicated, rather 

 thin, the surface smoothish, generally with minute spiral striae ; color 

 varying from sub-translucent white to light brown or yellowish, 

 often with a supra-peripheral band (rarely several bands). Whorls 

 5-6, convex, the last hardly descending in front. Aperture round- 

 lunate, toothless ; peristome thickened within and expanded, dilated 

 at columellar insertion. Type E. fruticum, pi. 55, figs. 1, 2, 3, 4. (See 

 also pi. 55, fig. 19, E. similaris, and pi. 55, fig. 5, E. duplocincta). 



Jaw arched, with 4-11 ribs denticulating the concave margin. 

 (See pi. 65, fig. 4, similaris ; pi. 65, fig. 5, duplocincta ; fig. 2, ravida). 



Radula of E. fruticum having the median cusp of middle teeth as 

 long as basal-plate, side cusps subobsolete. Laterals with longer 

 mesocones. Marginals with long bifid inner and on the outer ones 



