332 Appendix to the Proceedings 



transverse, scarcely emarginate ; mentnm with a strong middle 

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

 line ; ligula as in the rest of the Chlaniidce, 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 StarviToo), 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 

 diiatatse, rotundatae. Articulus ultimus palporum maxillarium 

 ad basin eylindricus, in medio tumidus, ad apicem acuminatus ; 

 articulus ultimus palporum labialium similis, sed minus tu- 

 midus et minus acuminatus et truncatus. Mandibuli fortes, 

 densi, dexter intus bidenticulatus, sinister unidenticulatus. 

 Labrum quadratum. Caput mediocre, baud retro coarctatum. 

 Oculi satis prominentes. Antenna? ad instar capitis et pro- 

 thoracis longitudine; articuli primi, tertii et quarti longi- 

 tudine aequales, cseteris longiores, et, cum secundo (breviore), 

 obconici, quinti et sequentes parum depressi. Prothorax 

 subquadratus, parum retro coarctatus; anguli antice rotun- 

 dati, postice distincti. Elytra prothorace paullo latiora, 

 parum elongata, parallela, ad apicem sinuata. Pedes medi- 

 ocres : tibise anteriores parum dilatatse et versus apicem extus 

 denticulatse ; tibise intermedia? et posteriores baud denticu- 



