Table 1 in New species of Georissa (Gastropoda: Hydrocenidae) and Acmella (Gastropoda: Assimineidae), with new records of Georissa from Northeast India

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). CharactersG. meghalayaensis sp. nov.Georissa sp.G. mawsmaiensis Das & Aravind, 2021G. saritta W.H. Benson, 1851G. liratula Stoliczka, 1871G. illex W.H. Benson, 1856G. pyxis W.H. Benson, 1856G. fraterna Theobald & Stoliczka, 1872G. frustrillum W.H. Benson, 1860G. rawesiana W.H. Benson, 1860G. blanfordiana Stoliczka, 1871Size (SH × SW) (in mm)1.91× 1.561.98–2.05× 1.53–1.631.82×1.422 ×1.252.2 ×1.8 (Maj), 2.2 × 1.5 (Min)2.65× 1.651.5 × 1.251.4 × 0.952.5 ×1.752 ×1.51.8× 1.2(Maj), 1.8 × 1 (min)Shell shapeoval, turbinateoval, turbinateovate-conicalovate-conicalglobose-conical, solidovate-sharp, succineousovate-conicalcylindrical, conoid, solidovate-elongated, solidalmost globose-conical, more slender than G. liratulaglobose-conoid, moderately solidColordark brownishamberamberreddish-white with a rusty tintyellowtranslucent, reddish-brownish towards spiretranslucent, reddish towards the spirepale, yellow-greentranslucent, amber-colored (?)yellowish-whiteyellowish, apex reddishLirationmultilirate, meshed patternmultiliratemultiliratemultiliratemultilirate, a little more numerously spirally ribbed than G. sarritamultiliratemultiliratemultiliratemultiliratemultilirate–Sculpturespiral 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 shellspiral 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 absentstrong, spirally striated whorlsnumerous close spiral ridges separated by narrow groovesspirally lirate with sharp, simple, closely equidistant ribsvery finely striated, spirally closely and delicately lined–spirally coarsely liratevery closely spaced spiral striationsclosely spirally striatedvery fine transverse growth striae, somewhat polishedUmbilicusnarrownarrowimperforatesub imperforate, covered by thickened callusimperforatescarcely perforateperforateimperforate, with umbilical region slightly impressedimperforateimperforate, umbilical region slightly depressedimperforateWhorls3.5, convex3.5, convex3.62, convex4, very convex3–3.5, convex4, very convex4, convex3.5, convex, somewhat flattened above5, convex4, very convex3.5, somewhat convexSpiral striae/ ribs from suture to aperture (in apertural view)7–96–94756586much finer spiral striation, 7–8nil, no spiral ribs; longitudinal ribs are presentSpireacuminateacuminateconicalconicalconicalshining, elongate-conicalconicalconicalsub pyramidalconicalsubacuteApexblunt, roundishblunt, roundishblunt, roundishobtuse or blunt, reddishsubobtuse, forming slightly prominent mammillate tip, smooth, yellow actually reddeningslightly obtuseobtusestrongly mammillateobtuseobtuse or bluntreddish, nipple like, very smoothSuturewell-impressedwell-impressed, with narrow shoulderwell-impressedwell-impresseddeep, simpledeepdeepvery deepimpresseddeep–Apertureovate, oblique or sub-verticalround or slightly ovate, oblique or sub-verticalsub-circularhardly oblique, ovate, equaling ⅔ of shell’s length, columellar margin angular above, with callous inner wallsemilunar, nearly equaling height of spire, somewhat dilatedoblique, ovate, angular aboveoblique, semicircular, columellar margin expanded and somewhat reflexedalmost semi circularoblique, truncated-ovate, angled at upper left sideslightly oblique, semicircular, angled at upper left sidebroadly semicircular