Mr. A. Murray on Coleoptera from Old Calabar. 343 



2. 0. politus, mihi. 



Niger, nitidus, impunctatus, politus ; antennis fuscis, ad basin 

 ferrugineis ; mandibulis ferrugineis, acutis, supra haud con- 

 vexis ; capite et thorace lsevissimis, hoc stria marginali tenui 

 laterali et anteriori; elytris politis, leviter striato-punctatis, 

 interstitiis planis, spatio marginali opaco, ad apicem latiore. 



Long. 4£ lin., lat. 3 lin. 



Black, shining, impunctate, and polished. Head smooth, with 

 scarcely any depressions; antennae with the first three joints fer- 

 ruginous, rest dusky ; palpi piceous ; terminal joint of maxillary 

 palpi elongate and ovato-cylindric (rest wanting in my specimen); 

 mandibles ferruginous, darker at tip, not convex, triangular, 

 making the muzzle sharp, nearly straight on the outer side, 

 slightly curved and without teeth on the inner ; clypeus large, 

 transverse, scarcely emarginate; mentum with a strong middle 

 tooth, and the lateral lobes large, acute, and with a conical out- 

 line ; ligula as in the rest of the Chlaniida, free at its extremity, 

 and cut straight. Thorax smooth, convex, and with a faint thin 

 stria along the lateral and anterior margins, none on the basal. 

 Scutellum rather large. Elytra delicately punctate-striate ; inter- 

 stices flat and shining; the scutellar stria along with the first and 

 second converging at the base to meet the fourth, the third 

 straight ; a marked opake and rugose marginal space surrounding 

 the sides and apex of the elytra, widest at the apex ; the margin 

 of the rest of the elytra touching this space sharply defined, so 

 that the polished disk seems to lie on the top of an under opake 

 layer ; the apex slightly sinuate. Under side with scattered punc- 

 tures, except along the middle ; the prosternum somewhat pro- 

 jecting and slightly grooved, as in last species. Legs piceous 

 (the anterior legs are wanting in my specimen). 



I have only received one imperfect specimen of this species ; 

 and the want of its anterior legs, combined with the somewhat 

 different form of the mentum and terminal joint of the palpi, 

 prevent me referring it with absolute certainty to this family ; 

 but I have no doubt, from its general facies, taken along with 

 the other characters which remain, that I have placed it correctly. 



Cratoceridse. 



Diatypus, mihi. 



(From Biarviroco, alluding to its being the representative in 

 Africa of the genera Daptus, Geopinus, Agonoderus, &c.) 



Mentum breve, profunde emarginatum, dente medio curto et 

 obtuso, lobis lateralibus latis, fortiter extus rotundatis. Ligula 

 parva, ad basin coarctata, ad apicem truncata. Paraglossae 



