250 CETO>'II>M. 



Key to the Species. 



1 (10) Tlind angles of protborax rounded. 



2 (9) Upper surface not metallic. 



3 (8) I'rothorax subcircular. 



4 (5) Elytra decorated with oblique 



■svliite lines jant>om', Gestro, p. 250. 



5 (4) Elytra decorated with pale spots. 



6 (7) Numerous white spots on each 



elytron alhofjidtatus, Moser, p. 251. 



7 (6) Two white spots on each elytron. . discolor, Jordan, p. 251. 



8 (3) I'rothorax strongly transverse .... festivus, sp. n., p. 252. 



9 (2) Upper surface more or less metallic orHaf?/s, Jordan, p. 253. 

 10 (1) Hind angles of prothorax right 



angles costipennis, Jans., p. 254. 



One species, Trichius donibrotfsJcii, Noufried, has uot beeu 

 identified and is therefore uot included in the above key. 



235. Trichius jansoni. 



Trichius jansoni, Gestro,* Ann. Mus. Geneva, (2) x, 1891, p. 854, 

 pi. 2, fig. 12. 



Black and opaque, with the scutellum, the nnddle of the 

 pygidiura and the legs shining, and decorated with white markings, 

 consisting of a narrow marginal line to the pronotum, absent in 

 front and interrupted in the middle behind, a short line upon each 

 elytron bordering the scutellum, a very short transverse line 

 behind the shoulder, an oblique line extending from before the 

 middle of the inner margin, where it is slightly hooked, to behind 

 the middle of the outer margin, and a small transverse apical 

 patch. There is also a large white patch on each side of the 

 pygidium, and the sides of the sternum and hind cox^e and the 

 greater part of the abdomen are of the same colour. 



The head is finely rugose, with the clypens as long as it is broad 

 and slightly bilobed. The pronotum is strongly and rugosely 

 punctured, and nearly circular in outline, with the hind angles 

 entirely absent but the front angles rather promiueut. The 

 scutellum is almost semicircular and strongly punctured, with a 

 smooth median carina. The ehitra have rows of punctures deeply 

 impressed in front, with the interstices elevated. The pi/gidium, 

 metasternnm and abdomen are rugose and clothed with short 

 yellowish seta>. The leys are long and slendi-r. 



6 . The club of the antenna is as long as the footstalk. 



Lenyth 10-5 mm. ; breadth 4*o mm. 



Burma : Karen Hills, 2700-3300 ft. (L. Fea). 



Tyi^e in the Genoa Museum. 



Only a single male specimen is at present kuo\\ n. 



