44 6 MACROMA INSIGNIS. 



portion beyond the sharp line is more distinct and closer,' 

 whereas just the contrary is the case with the similar 

 sculpture on the pygidium , viz. less distinct and more 

 widely separated in the Sumatran specimen. 



Moreover the impression on the middle of the apex of 

 the pygidium is larger and deeper and its apical margin 

 more deeply emarginate in the Sumatran specimen than 

 in that from Burma , and , last not least , the apical mar- 

 gin of the pygidium (when viewed from below) , is , in 

 the middle, conspicuously broader in the first than in the 

 second. 



As in both specimens the longitudinal impression on 

 the middle of the abdomen , peculiar to the males of the 

 genus Macroma , is absent , I believe both to belong to 

 the female sex and therefore the differences mentioned 

 above cannot be regarded as sexual ones: perhaps they 

 are due to local influences. 



I am glad to say that Mr. Veen most generously has 

 offered this very interesting beetle to the collections of 

 the Leyden Museum. 



Leyden Museum, April 1897. 



Notes from the Leyden Mlixsemai, "Vol. XIX. 



