REMARKS UPON CORYPHOCERA-SPECIES. 131 



ratrix Mohn. and dives Westw. Dr. Kraatz simply over- 

 looked that the female Coryphocera figured sub n" 6 on 

 plate 33 of the Arcana Entomologica belongs to West- 

 wood's description of G. decora 111., and it is not even a 

 revelation that the specimen there figured belongs to the 

 Javanese race of decora 111., afterwards separated by 

 Mohnike under the name imperatrix ^ as Westwood himself 

 informs us he has represented on the plate a magnificent 

 specimen collected in Java by Dr. Horsfield; moreover it 

 has been mentioned also by Ritsema in the publication of 

 the Sumatra-Expedition. I shall not correct some minor 

 inaccurracies contained in Dr. Kraatz' paper, I am very 

 sorry indeed that the above rectification is not exactly in 

 favour of his hypothesis that C. Mac Leayi Gory should 

 be a C. horneensis Wall, with the head of Viceros (Petelif). 

 In order to show that such a strange phenomenon is not 

 standing alone I will draw his attention to that puzzling 

 female of Heterorrhina mitrata Wall., which also closely 

 resembles C. horneensis Wall., were it not for its head 

 having the same structure peculiar to the females of DzVéros. 

 Is it not rather funny this couple of C. horneensis Wall, 

 with fancy-dress heads? 



For my part I think it safer to consider Mac Leayi 

 Gory as well as mitrata Wall, interesting connecting links 

 between the genera Coryphocera and Diceros ^ combining 

 the style of coloration of the first with the armature of 

 the head of the second, and, if absolutely a conjecture 

 must be made , let it be that both species under con- 

 sideration really belong together as male and female , 

 for the locality Philippine Islands of Mac Leayi Gory may 

 be inaccurate as is so often the case with insects described 

 in that period , and here it is the more probable as Gory 

 mistook his species for Mac Leayi Kirby. 



Beukenstein-Museum, August 1895. 



Notes from tlie Leyden Museum, Vol. XVII. 



