88 



sequalibus fortiter transversis, flabello sat angusto articulis 

 ceteris conjunctis quadruple longiori ; caput haucl cornutum 

 seel inter antennas transversim fortiter carinatum ; clypeus sat 

 declivis, antice rotundatus, marginibus fortiter reflexis ; pro- 

 thorax maris margine anteriori medio cornutus, basi valde 

 lobatus, disco excavato ; tibiye anticse acute 3-dentatie, pos- 

 teriores sat fortiter dilatatte extus bicarinat8e ; tarsi graciles 

 tibiis sat longiores. 



The antennae resemble those of Aneurystypus calvus, Blackb., 

 but their flabellum is longer in comparison with the rest of the 

 organ than in any other Dynastid known to me. The maxillary 

 palpi are longer than the basal 7 joints of the antennte together. 

 The general facies is nearest to Cavonus of genera known to me. 

 Structurally this genus comes nearest, I think, to Pseudoryctes, 

 which it resembles very closely in the form of the mentum and of 

 the legs ; its clypeus, however, is much less abruptly declivous. 

 From Teinogenys (which I do not think I have seen) it appears 

 to difi'er i7iter alia in its non-tuberculate head, strongly dilated 

 posterior tibi?e and profoundly excavated prothorax. The very 

 strong lobe into which its prothorax is produced behind will, I 

 think, distinguish it from all the previously described genera of 

 OryctomorjyMdes. 



P. antennalis, spec. nov. S^ Sat brevis ; sat latus ; sat nitidus ; 

 supra glaber (pilis longis adpressis, a prothoracis basi orien- 

 tibus, exceptis), corpore subtus pygidio pedibusque longe 

 dense hirsutis ; ferrugineus, pilis pallidioribus, capite ^^yo- 

 thoracis latera et pedum marginibus carinisque infuscatis ; 

 clypeo parce fortiter, prothorace variatim (disco sparsim 

 strigatim, lateribus antice crebre fortiter j)ostice sparsim 

 minus fortiter), scutello leviter obscure, pygidio (in medio 

 Isevigato) ad latera crebre leviter, punctulatis ; prothoracis 

 cornu lamelliformi in medio angustato-acuto, disco a basi ad 

 apicem late excavato, partis excavata3 lateribus pone medium 

 utrinque obscure tuberculatis ; elytris fortiter punctulato- 

 striatis, interstitiis vix convexis hie illic puncturis nonnullis 

 sat magnis instructis. Long., 7 — 74 1. ; lat., 4 — 4^ 1. 



The coloration of the prothorax (in both the examples before 

 me) is very peculiar, the interior surface of the excavation being 

 of a pale ferruginous tint, while the rest of the surface is blackish- 

 brown, but variegated with some ill-defined ferruginous spaces ; 

 the legs are rusty red in colour, but they are outlined with black, 

 and the carinse of the posterior 4 tibise are also black ; each joint 

 of the tarsi also has its apex more or less infuscate. The pro- 

 thoracic excavation is somewhat definitely margined laterally, the 

 margin being somewhat angulated at the point where the quasi- 



