On new Species of Histeridas. 



137 



XXI. — On new Species 0/ Histeridae and Notices of others. 

 By G. Lewis, F.L.S. 



[Plate VI.] 



Tins is the twenty-third paper on the Ilisteridse published in 

 this I\Iagazine. In the last (vol. xii. p. 417, 1903), I men- 

 tioned the preparation of a new catalogue of the family ; but 

 the issue of it is for a short time unavoidably postponed. In 

 the present arrangement of the species I have placed Niponids 

 first, because it is the most obvious exponent of those genera 

 whose species have non-retractile heads. In Niponius it is 

 a more pronounced character than in Ilololepta. 



List of Species, arranged generically. 



Niponius striaticeps, sp. n. 

 Eutidium lepidum, sp. n. 

 Hololepta dux, sp. n. 

 Lioderma intersectum, sp. n. 

 Plaesiu3 Mouhoti, Lew., 187'J. 



planulus, Leto., 1879. 



laevis, Leiv., 1879. 



Placodes Brauni, sp. n. 

 Platylister soronius, sp. n. 

 Platysoma ruptistriatum, sp. i 



capense, Wiedm. 



Omalodes mestino, sp. n. 

 Teinotarsus latipes, sp. n. 

 Macrolister, gen. nov. 



Pachylister, gen. nov. 

 Hister Belli, sp. n. 



pachjsoma, Ancey. 



Walkeri, sp. n. 



Pachylomalus Andrewesi, sp. n. 

 Pachvcrseriis cylindricus, Leiv., 



1879. 

 Probolosternus termitophilus, sp, n. 

 Enicosoma, gen. nov. 



vespertinum, sp. n. 



Saprinus dichrous, sp. n. 



flavopictus, sp. n. 



Pachylopus lepidulus, Br. 



Niponius striaticeps, sp. n. (PI. VI. fig. 4.) 



Cylindricus, parum robustus ; fronte transversim striata ; elytris 

 pedibusque rufo-brunneis ; propygidio 4-foveolato ; pygidio 2- 

 foveolato. 



L. 41 mill. 



Cylindrical, somewhat robust ; head pitchy brown, thorax 

 darker, except at the anterior angles, elytra and abdominal 

 segments reddish brown ; the head, armature transversely 

 and distinctly bicarinate, between the eyes there is a fine but 

 clear bowed stria, the surface before the stria is distinctly 

 punctulate, behind the stria the surface is apparently smooth, 

 but a few points can be seen under the microscope ; the 

 thorax is distinctly but not densely punctured, and some very 

 fine points are seen between the larger ones ; the elytra are 

 striate, the sutural stria is complete or traceable as punctures 

 to the apex and it is joined to the fifth at the base, the other 



