2 Mr. C. O. Waterliouse's descriptions of 



arched at tlie anterior angles), rather strongly sinuate 

 behind the lateral seta, so that there is a somewhat distinct 

 angle where the seta is situated; the posterior angles 

 diverging, a little less than right angles. Elytra obscure 

 Eeneous, very strongly striated, the strias deeply impressed 

 at the base, the three lateral stride (and the others at the 

 base) distinctly punctured, the interstices rather convex, 

 the fifth rather more so than the others, the seventh sub- 

 carinate at the base ; the outer angle made by the apical 

 truncature rounded, the sutural angle blunt. 



This species closely resembles what I have determined 

 to be C. (Biieus, Mots., and diifers chiefly in the coloration 

 of the thorax, which is more distinctly angulated at the 

 side than in the middle ; the head is not distinctly punc- 

 tured behind the eyes and on the neck as it is in C. cBiieus. 



^a5.— Andaman Is. (R. Meldola, Esq.) Brit. Mus. 



Adelotopus coUaris, sp. n. 



Elongato-oblongus, convexus, nitidissimus, nigro-piceus ; 

 thorace, elytris maculis duabus rotundatis, abdomineque 

 rufo-testaceis. 



Long. 2 lin. ; lat. -f lin. 



Head broad, arched. Thorax ^ broader than long, very 

 convex (the margins not visible from above), a little nar- 

 rowed towards the fi^ont, the anterior angles rounded. 

 Scutellum reddish-testaceous. Elytra not quite twice as 

 long as the thorax, nearly parallel at the sides, truncate 

 at the apex, the outer angle rounded off; the suture, the 

 lateral margin and the extreme apex are pitchy; each 

 elytron has a large round yellowish spot a little behind the 

 middle. The whole of the underside and the apical 

 segment of the abdomen, which is visible from above, are 

 reddish-yellow. 



Hab. — Siam (J. C. Bowring, Esq.). Brit. Mus. 



Adelotopus marginatus, sp. n. 



Oblongus, convexus, nitidissimus, l^evis, nigro-piceus; 

 thorace limbo, elytris marginibus maculisque duabus 

 obliquis piceo-rufis; corpore subtus piceo-testaceo. 



Long. 2 lin. ; lat. 1^ lin. 



Head blackish, margined with pitchy-red. Thorax 

 ^ broader than long, very convex (the lateral margins not 

 visible fi'om above), gently narrowed in fr'ont, the angles 

 rounded; the lateral margins and posterior border are 



