212 Mr. Gr. Lewis on new 



the middle and hind coxee and is thus divided longitudinally 

 into three parts. The external edge of the middle tibia is 

 armed in the centre with an isolated but fine and distinct 

 tooth. I took two examples in the touch- wood of an old tree 

 in the Dikoja district in the spring of 1882 ; they were 

 associated with a very pretty Megapeiithes. 



Triballus minimus, Rossi. — This common European species 

 has a very wide range ; I have a few specimens from Chefoo 

 and about thirty examples from El Hahaz, taken by Dr. 

 Millengen. All the Arabian examples are castaneous and 

 correspond to a variety standing in several cabinets under the 

 manuscript name of castaneus ; but the Chinese specimens 

 are typical . 



Triballus tropicus, n. sp. 



Ovalis, convexus, niger, nitidus, supra ocellato-punctatus et minute 

 punctulatus ; antetinis tarsisque rufis ; fronte subconcava sat 

 dense punetulata ad oculos elevata ; pronoto stria marginah antice 

 late interrupta ; elytris striis marginalibas integris ; propygidio 

 pygidioque sat dense punctulatis ; prosterno utrinque striate, stria 

 recta ; mesosterno antice recto immarginato, margine laterali 

 arcuato. L. 2 raill. 



Hob. Singapore. 



This species is allied to hcenigius, but it is much smaller, 

 and the prosternal lateral stria is straight. The ocellated 

 punctures in tropicus are scattered amongst a rather fine 

 punctuation, the punctures disappearing gradually on the disk 

 of the thorax and on the dorsal region behind the scutellum. 

 The underside has an extremely fine rugosely punctate sur- 

 face, with a scattered punctuation of a larger grade, and this 

 punctuation is much larger on the first segment of the abdo- 

 men than on the metasternum. The stria dividing the 

 mesosternum from the metasternum is crenellate, as in colom- 

 hius, koenigius, and others. 



1 found three or four examples in an old tree in the public 

 garden at Singapore, 11th February, 1880. 



Triballus montanus, n. sp. 



Orbicularis, subconvexus, rufo-brunneus, nitidus, undique grosse sat 

 dense punctatus ; antennis pedibusque rufis ; fronte subconcava, 

 supra oculos valde elevata ; pronoto stria laterali integra ; elytris 

 striis dorsalibus punctiformibus, brevibus ; pygidio sparse punctu- 

 lato apice l»vi ; meso- metasternoque occllato-puuctatis. L. 



2 mill. 



Hah. Dikoya, Ceylon. 



