44< HEY. T. A. ilAESHAXL — COBTNODIKOltUM EECENSIO. 



52. C. CHALYBEUS. 



C. oblongo-ovatus, parum convexus ; thorace basi lato, medio latiore, 

 lateribus rotundatis, antice angustato ; cseruleo-viridis, supra satu- 

 rate chalybeus s. cyaneus ; tborace parce omnium subtilissime punc- 

 tulato, elytris substriatim piiiietatis. 



Long. 4|-2f lin. ; lat. hum. 1 1-1 lin. 



Front finely punctulate, subcanaliculate ; elypeus ovate, distinctly mar- 

 gined, separated from the epistoraa by a curved line : ocular fovea 

 shallow. Thorax smooth, shining, bright steel-blue, very finely and 

 sparsely punctulate, wide at the base, still wider and rounded at the 

 sides, subdepressed above, uarrowed and compressed antei-iorly, not 

 sinuated behind the eyes. Elytra concolorous with the thorax, irre- 

 gularly and finelj- punctate- striate, the punctures coarser at the sides 

 and towards the shoulders ; these last prominent, obtusely angular. 

 Within the humeral callus is a deep, longitudinal, punctured fovea, 

 and between this and the suture a large, round, smooth, elevated 

 space. Underside and legs bluish green, metallic, with pale pubes- 

 cence. Antennte with the basal joints more or less fulvous, the club 

 cyaueous. 



Brought from Camboja, and the Slian country, in the Birman Peninsula, 

 by M. Mouhot. It varies considerably in size. 



Subg. Y. {Oiiwdon, noVm : Pla/:i/cori/nus,'Ba[y.) Antennce arti- 

 culo 1° gioboso, magiio ; 2*^° globoso, triple minore ; 3*^^° et 

 #° ssqualibus, elongatis ; 5*° et 6*° vix leviter compressis, 

 paulum dilatatls, elongatis ; 7™° ad ultimuin fortius com- 

 presso-dilatatis, ultimo ovato. JPalpi maccillares articulo 

 penultimo subgloboso, ultimo obtuse conico. Thorax traus- 

 versus, basi latus, antice parum angustatus, utriuque post 

 oculos vix sinuatus, lateribus rotundatis. Ante_pectoris pro- 

 cessus brevis, isoscelitrjangularis, apice a tboracis angulo 

 longe remoto. ScuteUum semiellipticum . Elytra tborace 

 paulo latiora. inter bumeros minus convexa, postice sensim 

 attenuata, valde convexa ; post bumeros profunde traus- 

 Yersim impressa, rugosa, tuberculis 4 vel 5 plus minus acutis 

 munita. Pedes breves, robusti, tibiis extus latins canalicu- 

 latis ; ungues appendiculis vix apice liberis. $ . Antennae 

 c? prsBlongse, corporis ultra secundum quadrantem extensse. 



53. C. TUBEECUi/ATTJS, Boly. 

 Baly, Descriptions Sfc. p. 3. 

 C oblongo-ovatus, subtus cum capite thorace et pedibus cseruleo-viridis, 



metallicus ; elytris cseruleis, prope humeros et scutellnm subviridibus ; 



subtiliter punotatus ; autennis nigris, articulis 7 basalibus subcasru- 



leis. ? . 

 Long. 4-43 lin.; lat. hum. l|-2 lin. 



