226 ODONTOLABIS INTERMEDIUS. 



wrinkled and pitted, the uppersurface near the eyes also 

 distantly pitted. Prothorax twice as broad as long , its front 

 edge strongly emarginate on each side , the sides trispinose 

 with two very deep concavities , the middle spine very long 

 and acute, undersurface smooth , the lateral margin coarsely 

 wrinkled. The prosternal process is well developed and 

 projects strongly in front and beneath ; the mesosternal 

 process hardly prominent. Elytra elongate , oval. Front 

 tibiae with three spines above the terminal fork , of which 

 the uppermost are rudimentary in the large development. 

 As for general aspect and brilliancy of the wingcases it 

 agrees well enough with 0. celebensis Leuthn. , but it is 

 a larger and comparatively a more slender species, its pro- 

 thorax is much flatter with the middle spine much longer 

 and more acute , projecting sidewards in a straight manner 

 and not downwards as in celebensis, its tubercle below the 

 eyes is also much larger and directed obliquely forwards. 

 O. alces F. is a more dull looking, broader species, with 

 the middle spine of the thorax not very acute and the 

 tubercle behind the eyes large and obtuse but not directed 

 forwards. 



Mandibles. 



Forma mesodonta. Mandibles longer than the head and 

 prothorax together, very slender, rounded, curved downwards, 

 the tip slightly turued upwards , with three apical teeth of 

 which the innermost is rather large and the two other 

 ones very minute, and a strong tooth beyond the middle, 

 projecting obliquely inwards not downwards. Head with 

 raised crest. 



In general shape the mandibles are very much like those 

 of the teledont form of 0. celebensis Leuthn. but they recede 

 from them by the want of basal teeth. The dentition cor- 

 responds with that of the mesodont form of 0. alces F. , 

 and it is this analogy, which made me suppose, that a 

 still higher development, without the large tooth beyond 

 the middle , might occur in my intermedins just as in alces, 



Notes from the Leyden Museum , Vol. XI. 



