254 MR. M. JACOBT ON NEW [Feb. 19, 



each, the base with one tubercle, the middle with a short transverse 

 ridge. 



Length 5 millim. 



Head very finely rugose, flavous, the vertex with an obscure 

 fulvous spot, the mandibles black ; antennse black, the lower three 

 joints fulvous, the fourth and the following strongly transversely 

 serrate ; thorax entirely covered with fine reticulations, the pos- 

 terior portion slightly raised into a round lobe, which near the base 

 terminates in a transverse ridge, the top of the lobe not sulcate 

 but rather more strongly reticulate, the surface coloured like the 

 head, with four obscure fulvous spots placed transversely and 

 anteriorly and another spot at the middle of the lobe ; scutellum 

 impunctate ; elytra subquadrate, very slightly naxTOwed posteriorly, 

 more strongly reticulate than the thorax throughout, with the 

 usual longitudinal ridge very indistinct, except near the suture at 

 the posterior half of the elytra, this ridge commences or is bounded 

 at the middle by a short strongly marked transverse ridge which 

 includes an oval-shaped space stained with dark fulvous, below 

 which there is another smaller similar spot, as well as one placed 

 at the middle near the lateral margin, the extreme basal margin 

 is black and a distinct tubercle is placed at the middle of the base, 

 the shoulders are likewise strongly raised but have besides two very 

 small tubercles near the apex, the rest of the surface is without 

 them, the suture is very finely crenulate at the posterior half ; the 

 pygidium and the underside are flavous, very finely rugose, the 

 first named part with a fine central ridge ; legs fulvous ; presternum 

 strongly narrowed posteriorly. 



Hah. Brazil, Groyaz. 



I cannot identify this species with C. ferrugata Lac, to which 

 it is no doubt closely allied ; but the description of the author and 

 those of other equally closely allied species do not agree with the 

 four specimens I have before me. In 0. ferrugata only the last 

 three or four joints of the antennse are black, the thorax has two 

 dark bands, the elytral ridges are described as distinct, which is 

 not the case in the present species, and there are two elytral weU.- 

 marked bands, which are absent here but replaced by the spots at 

 the middle of the elytra as is the case in 0. maculata King. That 

 species is, however, much smaller and differs in other detail ; the 

 specimens which I received from M. Deyrolle show no differences 

 of any importance. 



Chlamys dentipes, sp. n. (Plate XIV. fig. 5.) 



Black and shining, the labrum, palpi, and the antennse fulvous ; 

 thorax finely punctured, the posterior portion strongly raised and 

 divided, the sides with two round tubercles ; elytra with five highly 

 raised tubercles, one at the base, one below and three near the 

 apex, the intermediate space with high ridges of irregular shape, 

 the suture dentate ; the anterior tibise with a distinct tooth at the 

 apex. 



Length 3 millim. 



