32G Mr. 0. J. Arrow mi a Contrilmtion to the 



setoso ; pygidio grosse et crebre ])unctato ; liliiis aiiticis ticule tri- 

 dcntatis. 



Lung. W'h luin. 



Hah. Burma : Cariu Clicba {Fai). 



Two specimens, both males, were found at an altitude of 

 000-1,100 m. in December 1S,S8. 



The species is very like the preceding but smaller and 

 the prothorax is relatively narrower, the front an^jles 

 sharper and the hind angles less broadly rounded. The 

 elytra are very coarsely and deeply punctate-striate and 

 the membranes to which their apices become abruptly 

 reduced are broad and conspicuous. The pygidium is 

 very strongly pimctured and the front tibiie sharply tri- 

 dentate, without trace of an additional tooth as in the 

 other two species. 



M. mo7iorIon, Fairm., was described from Cochin China 

 but two specimens brought by Signer Fea from Rangoon 

 are almost certainly indistinguishable from it. The 

 membranous apices of the elytra, which are the most 

 peculiar feature of the genus, are not mentioned by Fair- 

 maire, but in this species they are so slight as not to attract 

 attention. 



Of the remaining Oriental forms attributed to Hcterony- 

 chits, H. moraior, F., jnvanus, Burra., fiuriiatrnms, Fairm., 

 and L<indicj'(jri, Schauf, are obviously very distinct from 

 it. The last is unknown to me, but the others are 

 congeneric, and for these and other species undescribed I 

 constitute the following new genus : — 



PSEUDOIIOMONYX, n. gen. 



Mandible.s broad, prominent, not acuminate; rounded or gently 

 sinuated at the side. Maxillaj armed with four strong equal teeth. 

 Labium smooth, silicate behind, broad and sinuated in front, with 

 the paljji inserted at the margins. Clypeus trapeziform, straight in 

 front, with the angles rounded. Head entirely unarmed in both 

 sexes. Prothorax regularly rounded at the .'^idep, with the posterior 

 angles completely rounded ofT. Pro])ygidium without stridulating 

 files. Legs very spinose, with the tarsi slender but not long. First 

 joint of the hind tarsus elongate. Front tibia strongly tridentate : 

 middle and hind tibia; flattened, gently crcnate and strongly spinosQ 

 at the extremity. 



