new Species of Histeridse. 45 



trotus and colombue, Lew. (described below). T. unitubercu- 

 latus is peculiar in having a median furrow in the meso- 

 sternum, which is immarginate laterally. In Holohpta the 

 ocular tubercle is less perpendicular than in Trypanceus, as 

 might be expected from their depressed form. 



Hob. Bolivia. 



I have only one male example, but I have adopted a trivial 

 name suggested by Heir J. Schmidt some years ago, and his 

 collection doubtless contains other specimen?. 



Trypanceus Colombia 3 , sp. n. 



3 . Cylindricus, niger, nitidus ; fronte haud carinata, bisulcata, 

 medio longitudinaliter impressa, rostro acute reflexo ; prpnoto 

 margine antice fortiter punctato, unitubcrculato ; elytris sparse 

 punctulatis ; pygidio sat dense punctato ; prosterno antice acuto, 

 immarginato ; tibiis anticis 5-dentatis. 

 L. 6|-6| mm. 



Cylindrical, somewhat robust, black and shining ; the head, 

 forehead bisulcate, sulci narrow and shallow anteriorly, 

 widening and deepening between the eyes, the median carina 

 in the allied species is represented by a longitudinal shallow 

 canaliculation, the ocular tubercles are somewhat acute and 

 the apex of tiie rostrum is pointed and markedly reflexed ; 

 the thorax is densely and coarsely punctured along the 

 anterior part, the anterior angles are not impressed, but they 

 have a marginal carina, in the middle behind the neck there 

 is a single tubercle, behind the tubercle the thorax generally 

 is finely and not closely punctulate, but longitudinally the 

 punctures are closer and larger in the middle ; the elytra are 

 also finely punctulate generally, but along the sutural and 

 apical margins the punctures are larger and (especially at the 

 apex) closer together ; the pygidia are rather closely punc- 

 tured ; the prosternum, keel immarginate, punctured, and 

 gradually narrowed to the apex ; the mesosternuni is also 

 immarginate; the anterior tibiae 5-dentate. 



The female : the head is opaque and finely punctulate, 

 rostrum very obtuse ; the thorax clearly and evenly punctured 

 throughout, points generally larger than those of the male ; 

 the prosternum, keel nearly smooth, somewhat obtuse at the 

 apex, and distinctly marginate ; the metasternum is canalicu- 

 late and its basal half strongly punctate. 



This is the most robust species known with an ocular 

 tubercle. 



Hab. Colombia. 



