Species of Histeridse. 469 



lato-striato, lateribus niarginato ; elytris rugoso-punctatis, striis 

 1-2 dorsalibus et suturali integris, 3 abbreviata, 1 et 2 basi cum 

 suturali junctis ; propygidio pygidioque parum dense strigosis ; 

 tibiis anticis latis fortiter bidentatis, posticis dilatis et inultispi- 

 nosis. L. 3g mill. 



Hab. Egypt. 



I am indebted to Dr. Sharp for this Histerid, which is 

 allied to fossor, but is a far more extraordinary insect ; its 

 great convexity gives it a dorsal outline suggestive of Pulex 

 irritans. The convexity of the abdominal region is twice as 

 great as that of the dorsal area, which is covered by the 

 elytra. The peculiar sculpture of the thorax, which is clothed 

 at the anterior angle with griseous hairs, although incipi- 

 ently apparent in fossor, is at present unique amongst the 

 Histeridse. 



Xenonychus was misplaced in the Munich Catalogue ; the 

 right position for it is between Saprinus and Pachylopus. I 

 think, as I have said at the beginning of this paper, that 

 Pachylopus is worthy of generic rank, and may be known at 

 once from Saprinus by the " tibise posticee tumidse extus 

 dense strigillatae." It is a genus at present confined to the 

 Cape of Good Hope and the sandy coasts of the Pacific ; but 

 the African species is distinct from all the others by a remark- 

 able sexual character displayed in the prolongation of the 

 apices of the elytra in one of the sexes ; whether in the male 

 or female is not yet recorded. 



Pachylopus ripce, n. sp. 



Niger, nitidus; antennis pedibusque rufo-brunneis ; f route stria trans- 

 versa recta ; pronoto lacvi, basi sparse punctato, stria integra ; 

 elytris impunctatis, striis validis 1-2 obliquis ante medium ab- 

 breviates, 3 plus quam dimidiata, 4 brevissima vel obsolcta, propy- 

 gidio pimctulato, pygidio laivi. L. 2| ad 2| mill. 



Hab. Enoshima and Hakodate, in Japan. 



This species is about the size of Sapi'inus lucidulus, and is 

 remarkable for the smoothness of its upper surface. Some 

 examples are unicolorous, others have a red band across the 

 middle of the elytra, wide at the outer margin, and gradually 

 lessening; towards the suture. 



'& 



Tryponams torpedo, n. sp. 



T. thoracico proxime affinis. 5 . Ater, nitidus, latus, robustus ; 

 fronte leviter excavata, rostro apice obtuso bilobo, pronoto pone 

 oculos subfoveolato ; tibiis fortiter dcnticulatis. L. 11| mill. 



Hab. Chontales. 



