VALLONIA. 



227 



198. Vallonia miserrima, Gmle. 



Vallonia miserrhna, Glide, Proc. Make, Soc. London, vii, 1907, 

 p. 307, text-figures. 



Orirjinal description : — •' Shell widely umbilicated, depi'essed 

 turbiuate, greyish white, translucent^ nepionic whorls smooth, 

 the remainder finely and closely ribbed. Spire depressed, apex 

 obtuse, suture deep. Whorls nearly 4, tumid, not sloping towards 

 the umbilicus, increasing regularly, except the last quarter whorl, 

 which widens suddenly, descending deeply in front and dilated 

 behind the peristome. Aperture obovate, oblique ; margins con- 

 vergent, united by a thin callus on the parietal wall ; peristome 

 thin, slightly expanded and reflexed ; margins evenly rounded, 



Fig. 86. — Vallonia riiiserrima. (From Proc. Malac. Soc. London.) 



columellar margin triangularly dilated and impinging upon the 

 wide open umbilicus." (Gude.) 



Diam. major 3, min. 2-5 mm. 



JIab. India : Anamullay Hills (Beddome). 



This form is allied to V. ladaA-ensis, Nevill, but it is more 

 excentric than that species, and the last whorl descends more 

 deeply in front, the whorls are more tumid, the body-whorl is 

 more compressed, the suture deeper, and the last quarter whorl 

 is more dilated, while the umbilicus is more open and the colu- 

 mellar margin more dilated. 



The shells from which this species was described were collected 

 by the late Col. Beddome in the early sixties of last century in 

 the interior of the Anamullay Hills, at an elevation of about 

 .'3000 feet. When in 1907 he handed the shells to me for 

 description, he informed me that no European had visited the 

 locality previously. jSTo Vallonia had at that time been recorded 

 so far south in Asia, and the occurrence in Southern India of a 

 species belonging to so typically palaearctic and nearctic a genus 

 is somewhat disconcerting, especially since, in view of the fact 

 that Beddome was the first European to visit the locality, the 

 possibility of its introduction with plants is excluded. 



q2 



