296 Mr. F. Bates's descriptions of 



by pairs at some considerable distance from the apex ; tlie 

 intervals are equal, very remotely punctiilate, and show 

 traces of a keel down their middle, and terminate in a Avell- 

 marked more or less oblong tubercle ; the sutural interval 

 is continued along the base to the fifth, the elytra being 

 basally depressed immediately behind it ; the colour is vivid 

 metallic-green, and brilliant coppery in alternate longitu- 

 dinal stripes, but less clearly defined than in acideferus, 

 Coq. ; underside dull black ; legs chestnut-red ; antennee 

 a little paler; prosternal process lanceolate, thickened at 

 the margins and sulcated at each side. 

 Lonor. 3^ — 4 lin. 



Antananarivo. 



Chemolanus, nov. o-en 



t>^ 



Differs from Tetraphi/llus in having the mentum dis- 

 tinctly carinate down the median line, front angles not 

 inflexed; head much shoi^ter, especially in front of the 

 eyes; the front convex and rapidly sloping to the epis- 

 toma; this latter smaller, convex, very broadly truncated 

 in front, the suture strongly arched, very deeply and 

 strongly (especially at the middle) impressed, and termi- 

 nating at each side at the anterior border at the point 

 where the truncation of the epistoma ends. Antennary 

 orbits convex ; eyes distinctly depressed above, laterally 

 more prominent and showing a conical outline; there is 

 also a well-marked groove bordering their inner edge; 

 prothorax less transverse, trapeziform, much less dee])ly 

 emarginate in front ; front angles less acute, depressed ; 

 sides obliquely narrowed from base to apex, not rounded 

 nor incurved at the base; lateral margins much finer; 

 base and apex indistinctly margined at each side, not at 

 all at the middle ; presternum shorter, abbreviated nearly 

 up to the coxn3 ; the process very much wdder, plane, 

 broadly triangulate behind, and rather closely fitting into 

 a corresponding cavity in the mesosternum ; intercoxal 

 process more narrowly rounded at apex. 



It may be added that the membranous hinge of the 

 labrum is largely exposed, forming, with the labrum itself, 

 a sort of muzzle. 



The head is of precisely the same form, &c. as in the 

 genus Camariodes. 



Type. — Totrapltyllus consohrinus, Fairm. 



