288 MR. M. JACOBY ON coLEOPTERA [May 21, 



Length 2^-3 lines. 



Of rather flattened shape, entirely black ; the head with a longi- 

 tudinal central ridge, finely rugose, the clypeus and the base of the 

 antennae fulvous or testaceous ; antennae scarcely half the length of 

 the body, black, the three (in one specimen the last joint only) apical 

 joints fulvous, the third the longest, the intermediate joints slightly 

 flattened and widened, closely pubescent : thorax transverse, rather 

 more than twice as broad as long, the sides straight, more or less 

 sinuate or concave at the middle, causing one or two obscure angles, 

 the posterior margins straight ; the surface very obsoletelv trans- 

 versely depressed near the base and more broadly at the sides, entirely 

 finely rugose, opaque, the sides furnished with some very minute 

 fulvous hairs ; scutellum broad, its apex truncate ; elytra very 

 shghtly widened posteriorly, the apex rounded, the entire surface 

 finely rugose, black, opaque, with more or less distinct light reflections 

 in the shape of narrow longitudinal bands at the sides ; underside and 

 leo-s black, the coxse obscure fulvous ; tibise unarmed, the first joint of 

 the posterior tarsi scarcely longer than the second ; claws bifid ; 

 anterior coxal cavities open. 



San Esteban. 



SCHEMATIZA VENEZUELENSIS, D. Sp. 



Black ; the lower part of the face and the apical three joints of 

 the antennse fulvous; above fuscous or black, finely rugose, the 

 sides of the thorax broadly, and a narrow lateral stripe of the elytra 

 obscure flavous. 



Length 3 fines. 



Head finely rugose at the vertex, the portion below the eyes and 

 the clypeus fulvous ; labrum and jaws black, shining ; antennae 

 rather'more than half the length of the body, black, the two or three 

 terminal joints fulvous or testaceous, the third joint very long, longer 

 than the two preceding joints together, the intermediate ones 

 slightly dilated and pubescent ; thorax more than twice as broad as 

 long, the sides rounded, the angles with a small tubercle, the surface 

 depressed at the sides, without other grooves, finely rugose, black, 

 the sides broadly pale flavous, the flavous portion narrowed at the 

 base ; elytra finely rugose, the apex rounded, the lateral margin 

 from the base to the apex narrowly flavous ; underside and legs 

 black, the base of the femora flavous. 



From San Esteban and Colonia Tovar. 



In this species the third joint of the antennee is very long and 

 slender, diftering in that respect from all the other species of the 

 genus with which I am acquainted, the dilatation of the intermediate 

 joints is also but feebly indicated ; but as I cannot find any other 

 difi'erent structural characters I have provisionally placed this insect 

 in Scliematiza. 



SCHEMATIZA UNISTRIATA, n. Sp. 



Obscure fuscous, sericeous ; the lower part of the face and thorax 

 pale greyish, the disk of the latter fuscous ; elytra fuscous, the 



