NEW SPECIES OF CHLAMYD^ FROM SOUTH AMERICA. 201 



where it breaks ofif ; there is also another very short costa visible near 

 the apex within the space surrounded by the second costa, the shoulders 

 are tubercalate, or rather prominent and smooth, and a single smooth 

 tubercle is placed near the scutellum ; all the interstices show some 

 single punctures of different sizes ; pygidium cupreous, very finely 

 punctured ; prosternum compressed and narrow, except at the extreme 

 base. 



Hab. Surinam. 



I know only a single specimen of this handsome and highly 

 metallic species ; the design of the elytra differs from any other 

 with which I am acquainted, but comes somewhat near C. 

 smaragdina, Lac. 



Chlamys centromaculata, sp. n. 



Short and subquadrate, flavous ; the thorax with lateral and a 

 central elongate black spot, the basal portion elevated into a crested 

 hump ; elytra with the anterior portion with black ridges and tubercles, 

 the posterior one flavous, with elongate tubercles and ridges ; pygidium 

 and legs spotted with black. Length, 2^ millim. 



Head closely rugose, flavous; the vertex with a central black spot ; 

 another one is placed at the base of the antennae, the latter with the 

 fifth and following joints transverse, flavous, the terminal joints slightly 

 darker ; thorax with the basal portion gradually raised into an acute 

 ridge at each side, which join at the back, and extend perpendicularly 

 downwards in another ridge ; these ridges are of black colour, as well 

 as the sides of the elevation ; an elongate black spot is placed at the 

 middle of the elevation ; the rest of the thorax is flavous, with several 

 black spots anteriorly, as well as the punctures themselves, the inter- 

 stices are slightly and irregularly convex, and the central black mark 

 is bounded at each side by another small ridge ; scutellum dark ; 

 elytra for the greater part flavous, impressed with deep dark brown 

 punctures ; a highly raised oblique flavous ridge runs from the shoulder 

 towards the suture before the middle, the end of which is nearly black 

 below the scutellum ; it is joined at nearly right angles by a short 

 costa, which finishes in a flavous tubercle near the suture below the 

 middle, near the apex are two other larger flavous tubercles, the 

 interstices are rather closely longitudinally costate and punctured, and 

 a more prominent black tubercle is placed at the middle of the basal 

 margin ; the suture is finely serrate ; pygidium with a longitudinal 

 central groove, flavous, spotted with black anteriorly and posteriorly; 

 under side with numerous black punctures ; legs flavous ; tibite with a 

 blackish spot ; prosternum carinate, triangularly dilated anteriorly. 



Hab. Brazils (C. Brack). 



This insect has its probable most nearly allied form in C. 

 adspersata, KolL, but neither KoUar nor Lacordaire give a 

 sufficient detailed description. Anyhow, the thoracic spots, 

 similar in the two specimens before me, are not mentioned, and 

 many other differences in the sculpture leave no doubt as to the 

 specific distinction of this Chlamys. 



