neio Species of IIIstericla3. 147 



Oval, ratlier convex, black and shining ; the head feebly- 

 impressed, stria strong and biarcuate; the thorax, stria ex- 

 ternal fine and shortened before the base and interrupted 

 behind the neck, internal also rather fine, feebly sinuous 

 laterally, and deflected behind the eye ; the elytra, striae, inner 

 humeral well-marked, apical, and passing- the middle, 1-3 

 dorsal complete and also strong, 4-5 apical and rudimentary, 

 sutural apical and just passing the middle; the pygidia are 

 clearly not dense nor coarsely punctured; the prosternura, 

 keel bistriate in the middle, the stria3 do not reach the base 

 nor the suture behind the anterior lobe ; the mesosternum is 

 feebly emarginate, stria fine and complete ; the anterior tibiae 

 are 3-dentate, the apical tooth being slightly bifid. In one 

 example the fourth stria is dimidiate. 



The chief distinguishing character of this species is the 

 bistriate presternum ; otherwise it is very similar to H. nilo- 

 ticus, Mars. The frontal stria in niloticus is acuminate in the 

 middle, not biarcuate; semiplanus^ zulu^ Mars., with copro- 

 I'hihis, Reiclie, belong to the same group. 



Hab. Mount Ohivinda, Gazaland {Guii A. K. Marshall^ 

 November 1901), and Usambara [Julias Weise, 1901). 



Hister sulcimargOj sp. n. 



Ovalis, parum convexus, uiger, nitidus ; fronte hand impressa, 

 stria antice recta ; pronoto striis validis intcgris, intcrvallo Itevi ; 

 clytris striis humeruli interna et 1-3 dorsahbus integris, 4 teiiuis- 

 sima, 5 obsoleta, suturali ultra medium abbreviata; propygidio 

 pj-gidioque dense punctatis. 



L. 7-7 1 mill. 



Oval, rather convex, black and shining ; the head not 

 impressed, stiia complete and straight anteriorly ; the thorax, 

 the two lateral stiise are deep and complete and rather near 

 together, the inlerslices between the outer edge and the two 

 strise being nearly equal in breadth, inner stria widely sinuous 

 and continued but rather finely behind the neck and deflected 

 behind the eyes, outer lateral hamate anteriorly and ceasing 

 behind the angle ; the elytra, striae, inner humeral and 1-3 

 dorsal complete, 4 very hne and sometimes traceable along 

 its whole length, 5 apical very short and punctiform, sutural 

 apical and just passing the middle ; the pygidia are wholly 

 evenly and very densely punctate ; the prosternum, the ante- 

 lior lobe with two marginal striaj ; the mesosternum is emar- 

 ginate, with a rather fine marginal stria following the contour 

 of the segn)cnt ; the anteriur tiliai are 3-dentatc. 



