234 



Memoirs of the 1 iiduni Museum. 



[Vol.. Ill, 



Aceraius occulidens, Zang. 

 Text-fig. 4A. 



I have examined two specimens, both preserved in the Deutsches Entomologisches 

 Musemii. One (the type) is from Mt. Kina Bahi (c. 5000 ft.) in Borneo, the other is 

 from DeH, Sumatra. 



Description. Lentith 48 mm. This s])ecies differs from .A. t^raiidis var. rectidens 

 only in the presence of a stout upwardly directed tubercle on the canthus, just in 

 front of the eve. 



Text-figure 4. 



A. Aceraius occulidens, head x 4. 



B. Aceraius triconiis, head x 4. 



C. Aceraius alutaceosternus, left mandible from the side 



D. Aceraius minor, head x 4. 



E. Aceraius acquideris, head x 4. 



Aceraius laniger, Zang. 



Two specimens of this species, both from Mt. Kina Balu, c. 5000 ft., are i)re- 

 served in the collection of the Deutsches Entomologisches Museum. 



Description .—Length 47-52 mm. Differs from A . kuwerti in the following charac- 

 ters only : right outer tubercle of head inclined to be more acute, apical angle of 

 supra-orbital ridge incHned to be less so ; ridge separating lateral and intermediate 

 areas of metasternum obtuse, rough ; tenth rib of elytra closely punctured and hairy 

 at shouldefs as in A. occulidens and all preceding species, the hair on the elytra all 

 shorter and closer. All these characters are apt to be variable in other species, and 

 I doubt whether this form is really as distinct from the next as at present it seems 

 to be. 



