a Family of Coleopterous Insects. 661 



internal margin of the clava of the antennee exhibits a stronger 

 contraction at the base than in that species, and the incision on 

 its outer edge is much wider, and the basal tooth very acute. 

 (Tab. nostr. Fig. 50.) If ultimately found distinct, the species 

 may receive the name of acutidens. 



I provisionally place in this genus the two following insects, 

 not having had an opportunity of minutely examining their 

 trophi : their general flattened appearance and the apparent in- 

 dication of a rudimental notch at the base of the clava of their 

 antennae approach the true Platyrhopali; whilst in some respects 

 they agree with some of the Paussi, such as P. affinis, S^c. I 

 obtained a knowledge of them, as well as of the Paussus excavatus 

 and P. armatus, during my visit to Paris in September 1830, 

 subsequent to the reading of the commencement of this paper. 



Species 3. Platyrhopalus ? l^evifrons. Dejean. 

 Tab. XXXIII. Fig. 65—67. 



P. latus subdepressus toto obscur^ rufo-castaneus, antennarum 

 clav4 ferfe ovat4 depress^ basi truncatd, extern^ in unguem 

 parvum producto, margineque externo quadri-subdentato, 

 thorace utrinque antic^ rotundato-dilatato. 



Paussus laevifrons. Dejean, Mss. 



Habitat in Africa occidentali, Senegalia. Dom. Dumolin. 



In Mus. Dejean, et Dupont. 



Long. Corp. lin. 5. 



Species nova magnaque. Latus, subdepressus, punctatus, ob- 

 scurfe rufo-castaneus, subhirsutus, laevis, nitidus. Caput por- 

 rectum, subquadratum, vertice convexo, laevi, anticfe rotun- 

 datum, posticfe in collum breve productum. Oculi medio- 

 cres. Antennarum clava magna ferfe ovata depressa sc. 

 supr^ disco pariim convexo, subtiis etiam pariim convexo 



sed 



