GNAPIIALORYX TRICUSPIS, 163 



NOTE XVI. 



TWO NEW SPECIES OF LUCANOID COLEOPTERA 

 FROM SUMATRA 



DESCRIBED BY 



C. RITSEMA Cz. 



Both species here described are sent over iu a single 

 male specimen from Kotta Zuydewijn near Solok by Mr. J. 

 H. Schagen van Leeuwen , and kindly presented to the 

 Leyden Museum by Prof. P. J. Veth. 



1 . G n a p h a I r y X t r i c u s p i s , n. sp. cf. 



Length (with mandibles) 26,5 mm. — The uppersurface 

 is covered all over , although not densely , with an erect 

 scale-like pubescence planted in large round punctures 

 which are not deep but well-defined. — The mandibles 

 are about as long as the head , porrect , their outer mar- 

 gin nearly straight although curved at the base and slightly 

 sinuated between the middle and the tip , their inner mar- 

 gin forms a very obtuse angle so as to make the mandi- 

 bles widest about the middle. The pointed tip is preceded 

 at a short distance by a broad and very obtuse tooth which 

 is obliquely directed forwards and upwards. About the 

 middle of the mandibles their upper edge shows a short 

 and broad obtuse tooth , whereas their inner edge is pro- 

 vided with three blunt teeth of which the anterior one is 



Notes iroin the Leyden JMuseum, Vol. I"V. 



