GUDE : NEW AND UNFIGURED SPECIES OF PLECTOPYLIS. 1 I 3 



d. e. 



Fig. 2a. — 2e. — I'lcctopulis {Siiiicola) fruhstorfcri, Mlldff. 



P. fruhsfvrferi is allied to F. tenuis, but the latter is thinner and 

 more shining, and has a white peristome. More important differences 

 are found in the parietal armature, which in F. tenuis consists of two 

 vertical plates with a horizontal fold above and below the anterior 

 p]a\.e, yvh\\e F. fruhstorfcri has only the two free horizontal folds in 

 front of the crescent-shaped plate. In the palatal armature there are 

 also important differences, the second fold in P. tenuis being much 

 longer than the others and attenuated anteriorly, while in P.fruhstorferi 

 it is short like the next three folds; in F. tenuis these folds are much 

 more elevated and more oblique and the denticle above the sixth fold 

 of F fruJisfor/eri is absent in P tenuis. 



The specimen figured is Dr. von Mullendorff's type. A shell in 

 my collection measures major diam. 12.5, minor 10-5; alt. 5 millim , 

 and is a little paler than the type. 



Figs. 2a — 2C show the shell in three different positions, while fig. 2d 

 illustrates the parietal, and fig. 2e the palatal armature. 



Pleetopylis (Endoplon) phlyaria, Mab. Figs. 3a— sf. 



Helix {Pledopijlis) phi ijaria, Mab.: Bull. Soc. Mai. France, 1S87, 

 iv, p. 100, pi. 2, figs. I — 3. 



Shell dextral, discoid, widely umbilicated, thin, subpellucid, pale 

 corneous, finely striated and provided with numerous raised spiral 

 ridges, under a deciduous cuticle, which is produced into short rather 

 stiff bristles, regularly disposed on the spiral ridges and the transverse 

 striae. Spire flattened, apex mucronate, suture impressed. Whorls 7, 

 rounded; slightly angular round the wide but rather shallow umbilicus; 

 increasing slowly and regularly, the last twice as wide as the penul- 

 timate, a little dilated towards the mouth, deeply and abruptly 

 descending in front. Aperture oblique, obcordate. Peristome white, 



