The name applied to birds from the Malay Peninsula may need to change. The
type of ardesiacus Bonaparte, 1850, may not be from mainland Asia. It is thought to
match Sumatran birds, thus making it a synonym of coronatus Raffles, 1822, and the
name malaccensis Cabanis, 1866, may have to be used instead.
http://www.repository.naturalis.nl/document/43938 .
Lophocitta ardesiaca Bonaparte, 1850, is synonymized with Platylophus
galericulatus galericulatus (Cuvier, 1816), and Platylophus galericulatus malaccensis Cabanis, 1866, becomes the valid
name for the birds from the Malayan Peninsula formerly known as Platylophus galericulatus ardesiacus (Bonaparte,
1850).
http://www.mapress.com/zootaxa/2009/f/z02149p049f.pdf .
Bonaparte in Conspectus generum avium, Volume 1 p. 374 (May 5, 1850) had said L. ardesiaca Cabanis, Mus. Heine, Halberstadt, ex Java?
Museum Ornithologicum Heineanum p. 219 dated October 15, 1851
L. ardesiaca Cab. MSS. ** in Bonap. Consp. pag.374. No. 3.—Sumatra. 1 St.
** Die Hanptfärbung ist dunkelgran oder schiefergrau auf dem Rücken und an den Flügeln ins Bräunliche am Schwanze ins Schwarzliche ziehend Im Uebrigen stimmen Zeichnung und Grosse sehr mit der vorhergehenden hauptsächlich schwarzen und der folgenden vorherrschend rothbraunen Art überein Das Vaterland ist eine der Sunda Inseln vermuthlich Sumatra.
Google translation:
The Hanptfärbung is dark gray or slate gray on the back and wings brownish Schwarzliche (blackish?) pulling the tail into the rest are in a very large drawing, and in accordance with the preceding and succeeding mostly black predominantly reddish-brown type The Country is probably one of the Sunda Islands, Sumatra.
