106 Mr. G. Lewis on 



tlic stria3 being also common to the metastcrnum ; the tibiae 

 are dilated on tlie oiiter edge. 



This species resembles semimtens, Sch., in the punctuation 

 of the thorax and in the punctiform sutural stria. 



llah. British Guiana, " Bartica, Deraerara " {R. J. Grew) \ 

 also Cayenne. 



Eretmotus planifronSy sp. n. 



Orbicularis, convexus, niger, nitidus ; fronte subopaca, immargiuata, 

 hand striata ; pronoto basi utrinque fovcolato ; elytris striis 1-2 

 brevibus ; prosterno opaco minutissime rugoso, antice iudistincte 

 punctate ; pedibus rufo-piceis. 



L. 2| mill. 



Orbicular, convex, black and shining ; the head is some- 

 what opaque, being microscopically rugose, very slightly 

 impressed anteriorly, and without a frontal stria; tlie thorax, 

 stria feebly sinuous before the basal angles, anterior angles not 

 very prominent, less so than those of Lucasi, Mars., and foveo- 

 late at the base close to the outer margin ; the elytra, strise, 

 outer humeral dimidiate, inner complete, 1-2 dorsal basal and 

 very short ; the pygidia are finely and somewhat irregularly 

 punctured, the points being most distinct at the bases of the 

 segments; the prosternum, surface opaque and microscopi- 

 cally rugose, with indistinct punctures on the anterior half of 

 the keel, striai rather fine, widely sinuous laterally and widening 

 out anteriorly somewhat similarly, but rather more, to those 

 of corpuIe?itus, Lew. (see figure, Ann. & Mag. Nat. Hist. x. 

 pi, xix. fig. 1, 1892) ; the mesosternum, marginal stria is 

 very fine and the fovea shallow. 



Hub. Mount Babor, Algeria {A. Thery). Found with 

 Aphanogaster testaceopilosa. 



Eretmotus foveisternus, sp. n. 



Orbicularis, convexus, niger, nitidus ; femoribus nigris, tibiis obscure 

 rufis ; fronte stria lateral! carinata ; elytris striis 1 Integra, 2-3 

 postice evauescentibus ; prosterno striis antice abbreviatis ; meso- 

 sterno fovcis laterali profunde et circulariter excavatis. 



L. 21 mill. 



Orbicular, convex, black and shining; the femora are 

 l)lack and the tibise obscurely red ; the head, surface opaque, 

 rugosely punctured, sculpture shallow, stria laterally carinate; 

 the tiiorax margined laterally, punctured chiefly behind the 

 neck and anterior angles, angles truncate ; the elytra, striae, 

 1 complete, 2-3 basal and evanescent before the middle, outer 



