14 TIARID.'E. 



spira eroso-decollata (speciin. adult.) ; anfract. 5-6 incolumes sub- 

 plan ulati, Ifevigati, sutura subcanaliculata, an^usta marginata 

 divisi, ultimo inagno, basi obtuse angulato, circa columellam striato. 

 Apertura piriformis, super ne acute angulata, basi prodiicta, late 

 eft'usa, columella torta, margine dextro recto, basali arcuato. 

 Opercul. subspiratum, nucleo basali, marginali. 



Testa juvenilis spira subiutegra, colore fusco-corneo ; aufr. 

 ultimas basi angulatus, parte mediana fusco tinctus. Anfr. 

 circa 11, supremi lougitudinaliter crebre striati, striis seusim 

 evanescentibus. 



Dim. specim. adult, decollati (aufr. 5-G). 



Alt. 54, diam. 13 mm. 



Aperture : alt. 18, diam. 10 mm. 



Dim. specim. juv. (anff. circa 11), 



Alt. 37, diam. 8 mm. 



Hah. Nicobars {Roepstorff). 



Var. nana, JVevill, tom. cit. 



" Strong!}'- decollate, only 3 or 4 whorls remaining." 



Alt. 29-5, diam. 10*5 mm. 



Hab. Great Nicobar (Roej^storff). 



Var. solidinscula, Nevill, tom. cit. 



"A very distinct variety, slightly decollate, (1 whorls ; 



constantly distinguished from the preceding by its greater 



solidity and by the less convex whorls, especially noticeable in tlie 

 last one." 



Alt. 37, diam. 11 "5 mm. 



Hab. Andamans {Roepstorff) . 



25. Tiara (Radina) charon (Preston). 



Tiara (Radina) charon (Preston), llec. lud. Mas. ii, p. 196, pi. 15, 

 lig. 22. 



Shell elougately subulate, dark brownish black ; remaining 

 whorls 12, convex, marked throughout with lines of growth and 

 spirally sculptured with faint, somewhat distant raised striae ; 

 sutures well impressed ; columella descending in a rounded curve 

 and extending into a slight callus which reaches the lip above ; 

 peristome simple; aperture oblong-ovate; interior slate-colour. 



Alt. 56, diam. maj. 12 mm. 



Aperture, alt. 11'75, diam. 7 mm. 



Hab. Andaman Islands. 



26. Tiara (Radina) expatriata (Preston). 



Tiara (Radi7ia) expatriata (Preston), Rec. Ind. Mas. ii, p. 196, 

 pi. 15, fi<r. 23. 



Shell subulately turreted, dark blackish brown ; remaining 

 whorls 4|, spirally striated on the lower half of the upper whorls; 



