AEGUS DILATICOLLIS. 189 



NOTE XVI. 

 TWO NEW MALAYAN LUCANIDAE 



UESCRIBED BY 



C. EITSEMA Cz. 



Aegus dilaticollis, n. sp. ^ and Q. 



Of this- species, which is easily recognizable by the width 

 of the thorax, I have before me two males (of minor deve- 

 lopment) and a female. One of the males belongs to the 

 Leyden Museum and originates from Pleyhari : Borneo 

 (J. Semmelink), the other male ^) as well as the female 

 belongs to the Civic Museum of Genoa and has been cap- 

 tured in 1894 at the Meutawei-islands, west of Sumatra, 

 by Dr. Modigliani. 



Length of the males (with mandibles) 14,5 mm. — The 

 head is transverse, strongly narrowing in straight lines 

 towards the front margin, strongly punctured all over, the 

 punctures bearing a short rufous bristle. The clypeus is 

 broadly emarginate, the emargination terminating in a pro- 

 duced point laterally. A small tubercle at the sides behind 

 the eyes. Mandibles slightly more than half the length of 

 the head, curved, the upper surface punctured and provided 

 on the middle of the inner edge with a trace of a tooth; 

 the inner edge of the lower surface provided near to the 

 base with a pointed tooth which is slightly directed back- 

 wards; on the inside, between the upper- and under mar- 

 gin, the mandibles are excavated. 



Prothorax strongly transverse, broader than the head, 



1) The head of this male is abnormally shaped. 



J^otes from the Leyden IMuseuin, Vol. XXII. 



