ODONTOLABIS LOWEI. 159 



NOTE XXIV. 



ON THE FORMA PRIODONTA OF ODONTOLABIS 



LOWEI, PARRY AND THE FORMA TELEDONTA OF 



ODONTOLABIS SOMMERI, PARRY. 



BY 



J. R. H. NEERVOORT van de POLL. 



Having recently obtained a part of the Coleoptera col- 

 lected by Mr. Whitehead at Mount Kina Balu (N. E. 

 Borneo), I was greatly pleased observing a few specimens 

 of Odontolahis Lowei Parry , a species which is incontesta- 

 bly one of the very rarest of the genus and as yet still 

 very imperfectly known. Dr. Leuthner , although having 

 examined almost all the more important Musea and pri- 

 vate collections , failed to find any more specimens except 

 the unique type, an amphiodont male specimen. The five 

 specimens I have now before me, are all of the priodont 

 form and differ considerably in size, four of them having 

 a length of ± 40 mm., whilst one individual measures 

 57 mm. 0. Loioei is closely allied to 0. Brookeanus Voll. 

 and one of its distinguishing characters , the much broader 

 black band at the base of the elytra , proves to be incon- 

 stant , however the shape and the sculpture of the man- 

 dibles is quite different, its prosternal process less develo- 

 ped and the elytral rim black beneath. 



Description of the forma priodont a. 



Mandibles shorter than the head, opaque being entirely 

 covered with minute granules; the sides rounded, convex 

 and regularly narrowed towards the tip (broadly sickle- 

 shaped and flattened in Brookeanus) ; innerside with five 

 contiguous irregular teeth. The tubercle behind the eyes 

 is hardly indicated in small individuals, well marked but 

 very blunt in the larger specimen. 



Notes from the Leyden M.useuiri, Vol. X.II. 



