550 Mr. Westwoon’s Descriptions of some new Species of Diopsis. 
whilst the discovery of species at the Cape of Good Hope and Arabia will be 
deemed very interesting, considering that hitherto the western coast of Tro- 
pical Africa and the East Indies have alone supplied the species already de- 
scribed. 
In conclusion, I must beg leave to express my thanks to Messrs. Wiede- 
mann of Kiel, Klug of Berlin, and Goldfuss of Bonn, for the kindness and 
liberality with which they permitted me to make the most unbounded use of 
the celebrated cabinets over which, with so much honour to themselves and 
such advantage to science, they preside; and also to M. Westermann of 
Copenhagen, who has been so kind as to send me specimens of several species 
of this very rare genus. : 
