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 line, the outer ones often obsolete ; aperture 

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

 brilliantly iridescent within ; columella white, arcuate, truncate at the 

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



Ceylon. 



G. stoliczkana G. & H. NEVILL, Jourti. Asiatic Soc. Bengal, 

 xxxviii, 1869, p. 158, t. 17, f. 2, 3. Trochus stoliczkanus FISCHER, 

 Coq. Viv., p. 341, t. 106, f. 2. 



This form, whilst it groups with the preceding and following 

 species, is quite distinct. The surface is lusterless, the line are 

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

 aperture decidedly produced, 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. PI. 30, fig. 5. 



Shell perforate, conical, elevated, solid, lusterless white, painted 

 with radiating brown stripes extending from suture to periphery, 

 where an equal number of spots is intercalated ; base dotted ; spire 

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

 by coarse line, which number 6 or 7 on the penultimate whorl, 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. (>]-7, diam. 5-6 mill. 



Ceylon. 



G. dupontiana NEVILL, Jourti. Asiatic Soc. Bengal, xxxviii, p. 

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

 107, f. 3. 



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. Nevill. PL 37, fig. 32 ; 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 lirate, the line 5-6 on the 

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



