1GO BULLETIN OF THE 



Bulimulus Schiedeanus, PFEIFFER. (p. 391.) 



Plate III. Fig. JK. 



Jaw slightly arcuate, ends scarcely attenuated, blunt ; anterior surface with 

 17 ribs, denticulating either margin. It is difficult to decide the exact charac- 

 ter of these ribs. I have usually called the ribs in Bulimulus, Cylindrella, etc. 

 narrow and widely separated. They should perhaps be described as very 

 broad, with narrow interstices, and with a gradual increase of thickness towards 

 their outer longitudinal margin. This plainly thickened margin is what I have 

 formerly described as narrow ribs. In the jaw before me there is no tendency 

 to oblique arrangement of the ribs at the upper central portion. 



The lingual membrane (see plate) is long and narrow. Teeth of the same 

 type as described by me under Bui. dealbatus, Say, in Vol. V. 



Bulimulus multilineatus, SAY. (p. 395.) 

 Mexico (Fischer and Crosse). 



Orthalicus undatus, BRDG. (p. 408.) 

 The upper figure of Plate LIV. is referred by Von Martens to 0. Fcrussaci. 



Succinea ovalis, GOULD, (p. 417.) 

 To the synonymy add : 



S. Calumetensis, CALKINS, Valley Naturalist, Vol. I. No. 2, p. 1, with a figure. St. 

 Louis. 



p 



SPURIOUS SPECIES OF HELICIM;. (p. 431.) 



Clausilia ncrole/iia, " L'Amerique Russe" is a typographical error for " L'Armenie 

 Russe." Zool. Rec., 1881. 



In the following list I have incorporated all the foregoing additions and 

 alterations. 



