It was described by Henry in 1968 .
The type species is Guichenia dufouri , which was originally described under the genus Dalmanites by Tromelin and Lebesconte in 1876 .
It was described by Henry in 1968 , and the type species is Guichenia dufouri , which was originally described under the genus Dalmanites by Tromelin and Lebesconte in 1876 .