180 CYRIOCRATES ZONATOR. 



NOTE XXX. 



ON CYRIOCRATES ZONATOR, THOMS. 



BY 



C. RITSEMA Cz. 



The above species, of which Mr. René Oberthür kindly 

 sent me the type-specimen (a cT from Siam) for exami- 

 nation , undoubtedly belongs to the genus Melanauster, and 

 is very closely allied to Melanauster Medenhaeliii Rits. which 

 latter, according to a male specimen in the Leyden Mu- 

 seum , inhabits the Island of Java. Thomson's species , 

 however, has the 3rd and 4th joints of the antennae dis- 

 tinctly less (almost imperceptibly) swollen at the tip , so 

 as to make these joints more regularly cylindrical , the 

 scutellum is shorter, and broader at the base, the shoul- 

 ders are more broadly rounded , and the front-tibiae are 

 more slender. It has moreover a glabrous band along the 

 middle of the pronotum , the glabrous transverse bands of 

 the elytra are as broad as those formed by the small golden 

 green scales (in Medenhaeliii they are distinctly narrower), 

 and , last not least , the erect black stiff hairs on the elytra 

 are decidedly longer in zonator than in Medenhachii. 



The grey colour of the scaly pubescence in my speci- 

 mens of Medenhachii, most probably will prove to be due 

 to their having been preserved for some time in spirits. 



Notes from ttie Leyden IMusexim , Vol. XII. 



