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ifEOCATOifUS, nov. gen. 

 (Dtnastid^, Obtctomorphid^). 



Cavono affinis ; differt mento antice deflexo, palpis maxillaribus 

 incrassatis, prosterno antice vix acute producto, maris pro- 

 thorace ad latera liaud angulatim elevato. 

 The insect for whicli I propose this name has the general 

 aspect of Cavonus, from which I cannot distinguish it by any 

 characters likely to be generic except the four alluded to above. 

 The first of these is very remarkable ; it is as though the an- 

 terior contracted portion of the mentum were bent down and 

 folded underneath, so that the organ appears to be widely trun- 

 cated just in front of the insertion of the labial palpi (which 

 spring from the under surface). The basal three joints of the 

 maxillary palpi are like those of Cavonus, but the apical joint 

 is remarkable ; it is only about twice as long as wide, truncate 

 at the apex, and of even width nearly to the base, where it is 

 contracted. I think the mentum must considerably resemble 

 that of Teinogenys, but the absence in the males of a frontal 

 tubercle and the presence of a thoracic horn seem inconsistent 

 with a place in that genus, even if the maxillary palpi be not 

 (as implied in the diagnosis of Teinogenys) different. 



JST. niger, sp. nov. Supra sat nitidus, subtus dense sat longe 

 brunneo-pubescens; niger, antennis palpis tarsisque piceis ; 

 elytris fortiter punctulato-striatis ; clypeo fortiter elevato- 

 marginato. Long. 8 1., lat. 41. 



Mas. Prothoracis disco a basi ad apicem excavato, margine 

 antico medio in cornu brevi elevato ; antennarum clava 

 sat angusta, articulis reliquis conjunctis paullo longiori. 



Pern. Prothorace irregulariter lougitudinaliter canaliculate ; 

 antennarum clava brevi. 



Clypeus rounded in front, with an entire elevated edging, 

 which is straight across the base. It and the hinder part of 

 the head are rather rugosely punctulate. Prothorax about half 

 again as wide as long, moderately finely, and closely punctured 

 about the sides, the disc almost smooth except the excavated or 

 depressed part, which in both sexes is largely but very shal- 

 lowly punctured ; in the male this is a roundly concave excava- 

 tion commencing at the base and terminating in front in a 

 conical horn slightly arched backwards and about as long as its 

 distance from the clypeal suture ; in the female it is a shallow 

 interrupted impression not quite reaching the front. The sides 

 of the prothorax are strongly rounded, the base gently bisin- 

 nate and about twice the width of the front edge, which is 

 strongly concave and roundly produced in the middle. The 

 scutellum is punctulate about its base and middle. The elytra 



