new Species o/'Histerid*. 1G7 



propygidium is rather densely punctured at the sides, the 

 points becoming finer and less close in tlie middle, especially 

 behind the base ; the pygidium is evenly and densely punc- 

 tured ; the prosternum is very finely punctulate, and the 

 points are most visible at the base ; the mesosternum emar- 

 ginate, marginal stria complete and well-marked. 



The facies of this species resembles H. punctistrius, Mars. 

 H. tnherctdipygus, vSch., H. fortunatus, H. Marseuli, Sch., 

 and H. ebenm'nus, Er., are the only species I know in this 

 genus in which the mesosternal stria is complete, and the 

 generic name Z)2'os/>//ro5 has been used for the last two species. 



Uab. Chapada, Matto Grosso {H. H. Smith). 



Hister iardigraduSy sp. n. 



Ovalis, subconvexus, niger, nitidus ; fronte leviter convexa, stria 

 antice recta, labro semicirculatim inciso ; pronoto lateribus nigro- 

 ciliato, stria interna antice, externa pone oculos, interruptis ; 

 elytris, striis 1-3 integris, 4 basin leviter abbreviata, 5 et suturali 

 brevissimis punctiformis ; pygidio densissime punctato ; tibiis 

 anticis tridentatis. 



L. 12 mill. 



Oval, rather convex, black and shining ; the head, labrum 

 is cut out on the middle of the anterior edge in the form of a 

 semicircle, and the parts adjacent on each side of the incision 

 project a little, the incision occupies rather less than a sixth 

 part of the edge, frontal stria straight anteriorly, not deep but 

 clearly marked, surface feebly convex, not impressed ; the 

 thorax ciliate laterally, outer lateral stria terminating behind 

 the eye, inner stiia interrupted behind the neck, within the 

 inner stria on the basal edge is a small oblique impression ; 

 the elytra, strise 1-3 complete, 4 slightly shortened at the 

 base, 5 and sutural very short and consisting of only a few 

 apical punctures, the apical margin of the elytra where the 

 four dorsal striaj end is irregularly strigose ; the propygidium 

 has a small transverse smooth space on either side near the 

 base and opposite to the fourth stria, sides densely punctate 

 and feebly foveolate, median area less closely punctured ; 

 the pygidium is very densely punctate ; the prosternum, 

 anterior lobe obtusely pointed and marginate ; the meso- 

 sternum is smooth, anteriorly emarginate^ with the marginal 

 stria interrupted behind the emargination ; the anterior tibiae 

 are strongly 3-dentafe. 



The species most similar to the above is H. rohusticeps, 

 ^!ars. Marseul does not describe the propygidium of his 

 species, but there are two small circular spaces on it which 

 correspond as regards their position with those of //. tardi- 



