Table 1 (continued on next two pages). Comparison of conchological characters of all species of Georissa W.T. Blanford, 1864 from India and Myanmar (adopted from Das & Aravind 2021).

Characters	G. meghalayaensis sp. nov.	Georissa sp.	G. mawsmaiensis Das & Aravind, 2021	G. saritta W.H. Benson, 1851	G. liratula Stoliczka, 1871	G. illex W.H. Benson, 1856	G. pyxis W.H. Benson, 1856	G. fraterna Theobald & Stoliczka, 1872	G. frustrillum W.H. Benson, 1860	G. rawesiana W.H. Benson, 1860	G. blanfordiana Stoliczka, 1871
Size (SH × SW) (in mm)	1.91× 1.56	1.98–2.05× 1.53–1.63	1.82×1.42	2 ×1.25	2.2 ×1.8 (Maj), 2.2 × 1.5 (Min)	2.65× 1.65	1.5 × 1.25	1.4 × 0.95	2.5 ×1.75	2 ×1.5	1.8× 1.2(Maj), 1.8 × 1 (min)
Shell shape	oval, turbinate	oval, turbinate	ovate-conical	ovate-conical	globose-conical, solid	ovate-sharp, succineous	ovate-conical	cylindrical, conoid, solid	ovate-elongated, solid	almost globose-conical, more slender than G. liratula	globose-conoid, moderately solid
Color	dark brownish	amber	amber	reddish-white with a rusty tint	yellow	translucent, reddish-brownish towards spire	translucent, reddish towards the spire	pale, yellow-green	translucent, amber-colored (?)	yellowish-white	yellowish, apex reddish
Liration	multilirate, meshed pattern	multilirate	multilirate	multilirate	multilirate, a little more numerously spirally ribbed than G. sarrita	multilirate	multilirate	multilirate	multilirate	multilirate	–
Sculpture	spiral ribs present, somewhat strong, very densely arranged, and around regularly spaced, sometimes distorted by radial ribs or growth lines, radial ribs present, irregular and weakly sculptured across the shell	spiral ribs present, strong, somewhat closely arranged, and nearly regularly spaced across shell except protoconch, somewhat fine or less sharp and more densely spaced spiral striations on basal part of body whorl (umbilical view), radial ribs absent	strong, spirally striated whorls	numerous close spiral ridges separated by narrow grooves	spirally lirate with sharp, simple, closely equidistant ribs	very finely striated, spirally closely and delicately lined	–	spirally coarsely lirate	very closely spaced spiral striations	closely spirally striated	very fine transverse growth striae, somewhat polished
Umbilicus	narrow	narrow	imperforate	sub imperforate, covered by thickened callus	imperforate	scarcely perforate	perforate	imperforate, with umbilical region slightly impressed	imperforate	imperforate, umbilical region slightly depressed	imperforate
Whorls	3.5, convex	3.5, convex	3.62, convex	4, very convex	3–3.5, convex	4, very convex	4, convex	3.5, convex, somewhat flattened above	5, convex	4, very convex	3.5, somewhat convex
Spiral striae/ ribs from suture to aperture (in apertural view)	7–9	6–9	4	7	5	6	5	8	6	much finer spiral striation, 7–8	nil, no spiral ribs; longitudinal ribs are present
Spire	acuminate	acuminate	conical	conical	conical	shining, elongate-conical	conical	conical	sub pyramidal	conical	subacute
Apex	blunt, roundish	blunt, roundish	blunt, roundish	obtuse or blunt, reddish	subobtuse, forming slightly prominent mammillate tip, smooth, yellow actually reddening	slightly obtuse	obtuse	strongly mammillate	obtuse	obtuse or blunt	reddish, nipple like, very smooth
Suture	well-impressed	well-impressed, with narrow shoulder	well-impressed	well-impressed	deep, simple	deep	deep	very deep	impressed	deep	–
Aperture	ovate, oblique or sub-vertical	round or slightly ovate, oblique or sub-vertical	sub-circular	hardly oblique, ovate, equaling ⅔ of shell’s length, columellar margin angular above, with callous inner wall	semilunar, nearly equaling height of spire, somewhat dilated	oblique, ovate, angular above	oblique, semicircular, columellar margin expanded and somewhat reflexed	almost semi circular	oblique, truncated-ovate, angled at upper left side	slightly oblique, semicircular, angled at upper left side	broadly semicircular