Diaugasma

	Diaugasma ''Diaugasma'' is a genus of sea snails, marine gastropod mollusks in the family Raphitomidae. Description The minute shell is oliviform, smoother microscopically spirally striolate, mainly on each side of the sutures, leaving the central portion of the whorl plain, in form cylindrical or elongate, compact, only slightly impressed at the sutures. The whorls of the protoconch A protoconch (meaning first or earliest or original shell) is an embryonic or larval shell which occurs in some classes of molluscs, e.g., the initial chamber of an ammonite or the larval shell of a gastropod. In older texts it is also called ... are closely and very finely cancellate. The whorls are semi-pellucid, unicolorous white, or flecked with pale stramineous. The aperture is narrowly oblong. The outer lip is nearly straight, slightly thickened,. The sinus is hardly expressed. Species Species within the genus ''Diaugasma'' include: * '' Diaugasma epicharta'' (Melvill & Standen, 1903) * '' Di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Diaugasma ''Diaugasma'' is a genus of sea snails, marine gastropod mollusks in the family Raphitomidae. Description The minute shell is oliviform, smoother microscopically spirally striolate, mainly on each side of the sutures, leaving the central portion of the whorl plain, in form cylindrical or elongate, compact, only slightly impressed at the sutures. The whorls of the protoconch A protoconch (meaning first or earliest or original shell) is an embryonic or larval shell which occurs in some classes of molluscs, e.g., the initial chamber of an ammonite or the larval shell of a gastropod. In older texts it is also called ... are closely and very finely cancellate. The whorls are semi-pellucid, unicolorous white, or flecked with pale stramineous. The aperture is narrowly oblong. The outer lip is nearly straight, slightly thickened,. The sinus is hardly expressed. Species Species within the genus ''Diaugasma'' include: * '' Diaugasma epicharta'' (Melvill & Standen, 1903) * '' Di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Diaugasma Olyra ''Diaugasma olyra'' is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae Raphitomidae is a family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.Bouchet P. & Rocroi J.-P. (Ed.) (2005). "Classification and nomenclator of gastropod families". '' Malacologia'' 47(1-2). . 3 ....MolluscaBase (2019). MolluscaBase. Diaugasma olyra (Reeve, 1845). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=719363 on 2019-03-06 Description The length of the shell attains 11 mm. It can be distinguished from '' Diaugasma epicharta'' by its much larger size, say 11 mm. long, a wider aperture, a shorter spire, and a pink-tipped apex. It is likewise semi-transparent, and the very delicate spiral striation across the whorls is represented by the Reeve as sometimes evanescent altogether. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Diaugasma Epicharta ''Diaugasma epicharta'' is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.MolluscaBase (2019). MolluscaBase. Diaugasma epicharta (Melvill & Standen, 1903). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=762160 on 2019-03-09 Description The length of the shell attains 5 mm, and its diameter 1.75 mm. The small oblong-fusiform shell is semi-pellucid. It is unicolorous white, or flecked with pale straw-colored spots. It contains six whorls of which three in the protoconch. These are closely and very finely cancellate. The subsequent whorls are slightly ventricose and almost smooth. The very delicate and irregular spiral striation across the whorls is almost evanescent. The body whorl is smooth centrally. The narrow aperture is oblong. The outer lip is nearly straight. It is incrassate, white and shining. The columella stands upright. The siphonal canal is short. The sinus is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]