PTEROCYCLOS.— Plate III. 



Very closely allied to P. celra ;md nanus, with the 

 sinus more distinctly auriculated. 



Species 16. (Mus. Benson.) 



Pterocyclos pullatus. Pter. testa siihampliter exca- 

 vato-umbilicatd, vLv discoided, pulld, obscure fasciatd 

 et undatd, infra periplieriam saturatiore, anfractibiis 

 rutundatis, rude striatis ; aperiurd circulari, sinu 

 an/juste auriculato. 



The dark Pterocyclos. Shell rather largely exca- 

 vately umbilicated, scarcely discoid, dark-brown, ob- 

 scurely banded and waved, darker below the peri- 

 pheiy, whorls rounded, rudely striated ; aperture 

 circular, sinus narrowly auriculated. 



Benson, Ann. Nat. Hist. ser. i. vol. xvii. p. 327. 



Hab. Near the Irawadi, Burmali. 



More contractedly umbilicated, and of darker colour 

 than its allies of the Kluisia and Neilghcny Hills. 



