Vilon (equals Velum, a curtain).
"The Worlds Greatest Books, Volume XIII." by Various
Et obscuratus est sol: et velum templi seissum est medium.
"Notes and Queries, No. 28. Saturday, May 11, 1850" by Various
The position of this mouth is at the velum.
"Text Book of Biology, Part 1: Vertebrata" by H. G. Wells
Velum: a membranous appendage of the spurs at the apex of anterior tibia in bees a broad process at inner end of fore tibia.
"Explanation of Terms Used in Entomology" by John. B. Smith
V. Velum palati in section.
"Surgical Anatomy" by Joseph Maclise
In boisterous weather, as we learn from Martial and other authors, these difficulties were so great that the velum could not be spread.
"Museum of Antiquity" by L. W. Yaggy
The shell is developed on the dorsal surface behind the velum, the foot on the opposite or ventral surface behind the mouth.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6" by Various
There is a veliger stage in development, but the velum is reduced.
"Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5" by Various
This larva is adapted for swimming, which is accomplished by means of the velum.
"Stories of the Universe: Animal Life" by B. Lindsay
In Hydromedusae the central nervous system forms two concentric nerve-rings at the margin of the umbrella, near the base of the velum.
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 2" by Various