218 GIBBULA. 



whorl ; last whorl high, the lip a little deflected toward the aperture, 

 periphery angular, base angular around the umbilical region, with 

 about 8 concentric lir^e, the outer ones often obsolete; aperture 

 oblique, about half the length of the shell, somewhat triangular, 

 brilliantly iridescent within ; columella white, arcuate, truncate atthe 

 base; umbilicus narrow, white. Alt. 51-6, diam. 4-5 mill. 



Ceylon. 

 G. stolkzkana G. & H. Nevill, Journ. Asiatic Soc. Bengal, 

 xxxviii, 1869, p. 158, t. 17, f 2, 8. — Trochus sfoliczkanus Fischer, 

 Coq. Viv., p. 841, t. 106, f 2. 



This form, whilst it groups with the preceding and following 

 species, is quite distinct. The surface is lustedess , the lir?e are 

 rather coarse, broad and flat ; the lower right hand margin of the 

 apertui-e decidedly jM'oduced, and the base usually somewhat notched 

 or emarginate as in the European G. tumida Mont. The white 

 flames are occasionally absent. 



G. DUPONTiANA G. et H. Nevill. PL 80, flg. 5. 



Shell ))erforate, conical, elevated, solid, lusterless white, painted 

 with radiating brown stripes extending from suture to periphery, 

 where an equal number of spots is intercalated ; base d(jtted ; spire 

 conic, with nearly straight outlines; whorls 6, jdanulate, encircled 

 by coarse lirte, which number 6 or 7 on the penultimate wdiorl, the 

 same number on the base ; body-whorl carinated ; base slightly con- 

 vex, not angulated around the umbilicus, but impressed ; aperture 

 very oblique; columella somewhat arcuate, nearly straight in 

 immature specimens. Alt. 6 '-7, diam. 5-6 mill. 



Ceylon. 



G. dupontiuna Nevill, Journ. Asiatic Soc. Bengal, xxxviii, p. 

 158, t. 17, f. 8, 1869. — T. dupontianus Fischer, Coq. Viv., p. 342, t. 

 107, f 8. 



Coarsely lirate like the preceding form, but more conical, more 

 carinate, with flatter base, and columella not truncate below. The 

 color too is much lighter. 



G. BLANFORDiANA G. et H. Ncvill. PL 37, fig. 82 ; PL 62, fig. 65. 

 Shell small, narrowly, deeply umbilicate, thick, conoid ; whorls 5, 

 the first whitish, the following painted with brown undulating, 

 radiating maculations, spirally strongly Jirate, the lirte b~(i on the 

 penultimate whorl, smaller above, the interstices deep last whorl, 



