Classification of the Coleopterous family Dynastidge. 347 



mity shows the remarkable neglect from which this group 

 has sutfered. It is a singular and interesting form which 

 presents a curious resemblance to the genus Phyllognathus 

 and supplies a link between the Hcteronychvs group of 

 genera in which the presternum has a columnar vertical 

 process behind the front coxie and the Oryctcs. group in which 

 there is no prosternal process. In Bhihcphorns there is a 

 large tumid elevation. B. iringuis, Fairm., is chestnut- 

 coloured, rather broad in form, with the thorax more or 

 less excavated in both sexes, and without stridulating 

 apparatus on the prop3^gidium. The front tibia? are 

 sharply quadridentate, the middle and hind ones strongly 

 carinate outside and digitate at the end. The mandibles 

 are largely exposed, acute in front and roundly dilated 

 at the sides. The maxillas are armed with three sharp 

 lateral teeth and the mentum is rather broad. The male 

 has a slender, strongly recurved horn, the thoracic excava- 

 tion is very large and deep and each lateral edge drawn 

 into a point, and the front tarsi and claws are not thickened. 

 This, the only known species of the genus, is found in 

 North and South India, Burma, the Malay Peninsula, 

 Borneo, Labuan and Sumatra, 



Tricliogomph'iis mongol, sp. n. 



Niger, nitidus, elongatus, sat parallelus, capite antice Licuspidato ; 

 l^rothorace postice grosse rugoso ; elytris Isevissimis, stria suturali 

 punctisque nonnullis prope margines anticum atque externalem ; 

 pygidio basi grosse punctato atque rufo-liirto : 



(J, capite cornu curvato simplici postice compresso armato; 

 prothorace subqnadrato, angulis posticis valde obtusis, postice lobato, 

 late elevato, parte elevata antice breviter bitubercnlata, snbtus 

 dislincte excavata, tuberculis duobus etiam ante medium lateralibus. 



Long. 33-47 mm. Lat. max. 18-25 mm. 



Hal). China: Hong Kong, Da-laen-saen ; CAMBODIA: 

 Laos; Burma: Catcin Cauri. 



This species was mistaken, both by Burmcistcr and 

 Fairmaire, for 1\ Martahani, Gucr., and the latter under 

 that impression redescribed that species by the name 

 of T. tonhineus. It is probable that he relied upon Bur- 

 meister's description for the identification of Guerin's 

 species, since the original description and figure leave no 



