...art squinted through the eyepiece and saw a huge crater with ashadowed spire in its center... 
Various 「Astounding Stories, August, 1931」
...Shell with nodulous plaits, the spire not striated...
William Swainson 「Zoological Illustrations, Volume I」
...Shell one inch and a half long, and smooth; the base and spire with faint remote grooves; the spiral whorls are scarcely convex, and their upper margins prominent...
William Swainson 「Zoological Illustrations, Volume I」
... Shell generally with an elongated spire, the aperture below narrowed; upper syphon or channel small or wanting...
William Swainson 「Zoological Illustrations, Volume I」
...Shell ovate-oblong, with irregular ferrugineous stripes; spire obtuse at the top, of five volutions; the suture depressed, with a marginal indented line...
William Swainson 「Zoological Illustrations, Volume I」
...Shell white, with capillary green bands; spire elongated, sub-attenuated, of six convex volutions; outer lip crenated; base slightly truncate...
William Swainson 「Zoological Illustrations, Volume I」
...Shell univalve, turbinated, inversely conic, convolute; aperture longitudinal, narrow, not toothed; base effuse; spire very short...
William Swainson 「Zoological Illustrations, Volume I」
...Coronated Cone, rosy, with brownish purple longitudinal lines, which are sometimes branched; spire convex...
William Swainson 「Zoological Illustrations, Volume II」
...Shell oval, grey, immaculate; spire small, conic; aperture brown; pillar 4 plaited...
William Swainson 「Zoological Illustrations, Volume II」
...Shell oval, plaited, fulvous, with brown dots; spire conic; base notched; pillar 4 plaited...
William Swainson 「Zoological Illustrations, Volume II」
...I once saw near 100, which had been picked up on the banks of the Ganges; the spire is rather lengthened, always obtuse, and the umbilicus even less than the last...
William Swainson 「Zoological Illustrations, Volume II」
...Shell ovate-globose, olive, with narrow bands of obscure purple; spire short, elevated, the tip acute; margin of the lip thin; umbilicus moderate...
William Swainson 「Zoological Illustrations, Volume II」
...These relative distinctions may be comprised in a few words; they rest principally on the spire, which in C...
William Swainson 「Zoological Illustrations, Volume II」
...maldivus the spire is thick and much shorter: the whorls in both these species are quite plain, and nearly flat: the spire of C...
William Swainson 「Zoological Illustrations, Volume II」
...The spire of C...
William Swainson 「Zoological Illustrations, Volume II」
...Shell globose, very smooth, olive; spire depressed; margin of the aperture thick, fulvous, grooved; umbilicus small, contracted, placed near the base; operculum shelly...
William Swainson 「Zoological Illustrations, Volume II」
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