156 ME. M. JACOBY ON NEW [Feb. 19, 



the middle of the base and a smaller one near the scutellum, 

 one below the latter near the suture, two below the shoulders, 

 six below the middle, placed in two transverse rows, and another 

 near the apex, which is connected with the preceding ones by a 

 sinuate ridge near the lateral margins : at the middle of each 

 elytron is a sinuate transverse short and strongly raised ridge, the 

 suture is finely serrate at its posterior portion as is the case with 

 most species of this group ; pygidium finely reticulate, flavous, with 

 an elongate depression near the apex at the sides ; abdomen of the 

 same colour and sculpturing, with a slight elevation at the sides of 

 the first segment ; legs slightly stained with fulvous. 



Hah. Brazil, Goyaz {DeyroUe). 



O. huqueti Lac. seems to be a more nearly allied species to the 

 present insect than any other on account of the sculptui'e of the 

 thorax, which is nearly the same ; but Lacordaire describes this 

 part as marked with black, of which there is no trace in the three 

 specimens I have for examination ; the elytra in C. deyrollei are 

 also furnished with some tubercles and there is no oblique humeral 

 ridge of which Lacordaire speaks ; the elytral tubercles are very 

 nearly placed at regular intervals and all are acutely raised. 



Chlamys discipennis, sp. n. (Plate XIV. fig. L) 



Subquadrate, broad, flavous, the thorax with two fulvous bands, 

 strongly raised posteriorly, the top of the elevation tuberculate, 

 the sides finely rugose ; elytra with numerous flavous tubercles, 

 the space below the scutellum, the sides, and the interior of all the 

 punctures purplish brown. 



Length 6 millim. 



Head finely rugosely punctured, flavous as well as the antennse, 

 the fourth and the following joints of the latter transversely 

 serrate ; the thorax with the posterior portion strongly raised into 

 a round hump, which is abruptly terminated behind, the top of 

 the elevation is sulcate to a shght degree and each side terminates 

 in a short ridge, which is provided with small but acutely raised 

 tubercles ; the sides of the thorax are finely rugose like the head 

 and of flavous colour, but at each side of the elevation is a dark 

 brown band, which extends indistinctly towards the anterior 

 margin ; scutellum flavous, impunctate ; elytra subquadrate, with 

 about ten small flavous tubercles, of which three or four are placed 

 transversely below the base and the others near the apex, these 

 tubercles are connected for the most part by strongly raised 

 flavous ridges, which enclose a broad flat space below the scutellum 

 of purplish-brown colour extending downwards below the middle, 

 another more irregular band is placed at the sides, broken up into 

 spots at its lower portion, which does not reach the apex, the rest 

 of the surface is sculptured like the thorax, with the punctures of 

 a dark brown colour ; the pygidium is covered with longitudinal 

 reticulations and has a central longitudinal ridge, the breast and 

 abdomen are Hkewise strongly rugose and of a flavous transparent 

 colour ; the legs are of similar coloration. 



Hah. Brazil, Goyaz {DeyroUe). 



