snails belong to the family Oncidae and genus Oncidae. It is a kind of mollusk with snails and shells in fresh water. The shell is large, with a height of over 1mm. The shape is conical or tower conical; Thick, greenish brown or brown. Most of them have seven snails, including two original spiral ribs, with spiny or papillary protrusions on the shell surface, or only smooth spiral ribs. It is a horny sheet.
hermaphroditic, the male right antenna is short and thick, forming mating organs. Viviparous, there are 3-7 embryo snails in each pouch, and the shell height is more than 1 mm. Living at the bottom of the lake, all over the lake bed. Living in deep water and shallow water. Snails crawl on the bottom of the lake with wide feet. It mainly feeds on diatoms growing at the bottom of the lake and debris in the mud. It is endemic to China, distributed in the southwest plateau lakes, and found in Dianchi Lake, Erhai Lake, Fuxian Lake, Yilong Lake and Datun Lake. Snail is a species of Gastropoda, Snail, and it is a gastropod endemic to lakes in Yunnan Plateau, China.
In p>1877, an expedition led by Maria Neville entered Yunnan, China, and the snail was first discovered in Erhai Lake of Dali Prefecture, and the specimens of this species were collected. The snail shells collected from Erhai Lake have huge scaly shells, obvious suture lines and strong spiral lines with carved lines. Maglia, the collector of snails, established the genus snail on this basis. This species and its "genus" also take the name "Margary" of the discoverer as the "genus name".