PYRULA. 85 



short, sometimes flattened ; columella smooth ; 



no fissure on the right lip. 



P. PERVERSA. Reversed;, pyriform, ventri- 

 cose, glabrous when adult (but when young trans- 

 versely striated^ and its lip furrowed within), light- 

 ish fulvous, with broad longitudinal reddish-brown 

 lines, the last whorl with a nodulous angle ; apex 

 mammillary ; tail striated and longish. 6|. W. 

 26. 88. 



P. VESPERTiLio. Sub-pyriform, thick, pon- 

 derous, muricated above, reddish chestnut; the 

 last whorl crowned with compressed tubercles ; 

 spire rather exserted ; sutures simple ; sub-um- 

 bilicated ; tail and spire (and when young alto- 

 gether) furrowed. 4. W. 27. 114. 



P. MELONGENA. Pyriform, ventricose, turgid, 

 glaucous, or reddish brown, with white transverse 

 bands; sutures canaliculated ; last whorl some- 

 times smooth, but generally with three or four 

 rows of thick spines ; spire short, longitudinally 

 plaited, and acute ; mouth oblong and smooth. 

 3 to 5. W. 26. 59. 



P. RETICULATA. Fig - shaped, cancellated, 

 white, sprinkled when young with many yellow 

 spots; the transverse striae larger and more dis- 

 tant than the others ; spire very short, convex- 

 obtuse, and mucronated at the centre; mouth 

 white. 4. E. 432. 2. 



