. The Australian zoologist. Zoology; Zoology; Zoology. LASERON 99 has the typical eulimid sinus on the outer margin of the aperture. It has, however, a solid opaque shell, is umbilicate, and has an extraordinary apex which is planulate and fits like a cap on the summit of the spire. Hedley thought this apex may be a plug formed after the shedding of earlier whorls. In the same year as he proposed Menon, Hedley (Proc. Linn. Soc. , 1900, p. 505) withdrew the name on Professor Tate s suggestion in favour of Chileutomia Tate & Cossman, a Tertiary fossil from Muddy Creek, Victoria. Though
. The Australian zoologist. Zoology; Zoology; Zoology. LASERON 99 has the typical eulimid sinus on the outer margin of the aperture. It has, however, a solid opaque shell, is umbilicate, and has an extraordinary apex which is planulate and fits like a cap on the summit of the spire. Hedley thought this apex may be a plug formed after the shedding of earlier whorls. In the same year as he proposed Menon, Hedley (Proc. Linn. Soc. , 1900, p. 505) withdrew the name on Professor Tate s suggestion in favour of Chileutomia Tate & Cossman, a Tertiary fossil from Muddy Creek, Victoria. Though the two have many features in common, in view of the great differ- ence in time, the other differences particularly in the protoconch, are I think sufficient to justify the retention of Menon as a genus, and it is here restored to literature. Menon anceps Hedley. Plate 3, figs. 68, 69, 70. Menon anceps Hedley, Proc. Linn. Soc. , 1900, p. 90, plate 3, figs. 5, 6, 7. The type locality is from shell sand at Little Coogee Beach, near Sydney. It is not a very common shell, but we have it from several of the outer beaches. The specimen illustrated came from 14 fathoms off Long Reef; its length is 6 mm. and width 2 mm. approximately. Its characters are so distinctive that it cannot be confused readily with any other species on the coast. Genus STILAPEX Iredale. Genotype Stilapex lactarius Iredale. Generic characteristics which may be selected from Iredale's description, are the globose shell of vitreous texture, with rounded whorls, the body whorl about two thirds of the total length, and the acuminate apex. The operculum is thin, horny and paucispiral, the outer margin of the aperture is also slightly sinuate Fig. 78: Stilapex lactarius Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1914
