360 TUTJjfCATELtlD^. 



Family TRUNCATELLID^. 



Genus TRUNCATELLA, Mlsso. 



Truncatella, Eisso, Hist. Nat. Alp. JNJarit. iv, 1826, p. 124; Lowe, 



Zool. Journ. v, 1832, p. 299; Pfeiffer, Zeits. Malak. iii, 1846, 



p. 177; id., Mon. Auric. Yiv. 1856, p. 17o ; Adams, Gen. Kec. 



Moll, ii, 1856, p. 310 ; Pfeiffer, Mou. Pneum. Suppl. 1, 1858, p. 6 ; 



Clieiiu, Man. Concliyl. i, 1859, p. 498 ; Pfeiffer, Mon. Pneum. 



Suppl. 2, 1865, p. 3;" id., Suppl. 3, 1875, p. 11; Fischer, Man. 



Conehyi. 1885, p. 751 ; Cooke, Cambridge Nat. Hist, iii, 1896, 



p. 414. 

 Erpetumetra, Lowe, Zool. Journ. v, 1832, p. 300. 

 Chonf,toma, Cristofori & Jau, Cat. IJer. Nat. Mus. Sect. 2 «, part 1, 



1832, p. 6. 



Type, Truncatella laevigata, Eisso. 



Kaiu/e. Ceylon, Malaysia, Philippine Is., Japan, Arabia, 

 Morocco, Mascarene Is., Australia, jSTew Caledonia, Polynesia, 

 Central America, West Indies, S. Europe. 



Shell subcylindrical, apex truncated, maiiunillate ; suture deep ; 

 aperture ovate, slightly acuminate on the dextral side ; peristome 

 continuous, retlexed. Operculum thin, corneous, nucleus basal. 



555. Truncatella ceylanica, Pfeiffer. 



Truncatella cei/lanica, Pfeitttir, Proc. Zool. Soc. 1856, p. 336; id., 

 Mon. Auric. \'iv. 1856, p. 186; id., Mou. Pneum. Suppl. 1, 1858, 

 p. 7; Suppl. 2, 1865, p. 5; Suppl. 3, 1875, p. 1 1 ; Nevill, Hand 

 List, 1878, p. 253 ; Kobelt & MoUendorrt", Nacbr. Deuts. Malak. 

 Ges. xxix, 1897, p. 76 ; id., Cat. Pneum. 1899, p. 4. 



Original description : — " Tr. testa subrimata, attenuato-cylin- 

 dracea, striatula, pellucida, nitida, corneo-rufa vel flavescente ; 

 anfr. superst. 4, supremis 2 rotundatis, reliquis plauioribus, 

 omnibus ad suturam plicato-crenatis, ultimo basi non compresso ; 

 ajjertura verticali, ampla, angulato subovali ; perist. contiiuio, 

 margine dextro tenui, expansiusculo, colmnellari leviter arcuato, 

 appresso. 



"Long. 6, diam. 2 mill." (Pfeiffer.) 



Hub. Ceylon. 



