I3ICHR0S0MA LANSBERGEI. 185 



NOTE xvn. 



SYNONYMICAL REMARKS 

 ABOUT DICHROSOMA LANSBERGET, KRTZ. 



J. R. H. NEERVOORT van de POLL. 



In a paper on the Cetoniidae captured by Mr. C. Ribbe 

 in the Aru-Islands (Deutsche Entomolocrische Zeitschrift. 

 XXIX (1885). p. 81—93), Dr. Kraatz has established the 

 genus » Dichrosonia' for the reception of an insect upon 

 which he bestowed the specific name ■» Lansbergei.^' Accor- 

 ding to the author this new genus is a very distinct one, 

 although rather difiicult to characterize, being not closely 

 allied to any of the already known genera , and perhaps it 

 should be best placed after Sternoplus. 



Having acquired of late the unique specimen (type) of 

 this species, I was at first sight surprised by the great resem- 

 blance it shows in outline with Diaphonia Bassi White, an 

 insect upou which Kraatz has established his genus Plate- 

 delosis (Deutsche Ent. Zeitschrift XXIV (1880). p. 198), 

 and after a careful examination of both the species , I feel 

 quite sure that there is not a single characteristic to justify 

 a generic separation. Happily 1 remembered the existence 

 of a Platedelosis-s]pecies from New-Guinea, n'vl. '. PL pinguis 

 0. Jans. (Cist. Ent. II. p. 605 (1882). pi. XI, f. 2), and a 

 careful comparison of PI. Lanshergei with the description 

 and figure of PL pinguis convinced me that it is quite the 

 same species , the coloration only being somewhat different , 



Notes from the Leyden IVIuseuiu, "Vol. IXl. 



