54 Mr. G. Lewis on 



sutural stria incurved at either end, pvgidia closely and 

 markedly sculptured, pro-sternum compressed, mesosternum 

 truncate and marginate, tarsal groove straight, tibia3 3-dentate, 

 terminal tooth very robust. 



Type Ht'ster ceneus, Lewis. 



The species for which this genus is established have 

 hitherto been included in Bister, of which the type is //. uni- 

 color, L., 1735 ; the species are afer, Payk., ceneus, africanus, 

 angoniensis, crenulatus, marshalli, nyassce, similis, and zam- 

 besius, Lew. The last species was formerly assigned to 

 Zaoromorphns. The antennal fossettes in unicolor are wide 

 open, and shallow. The species I have placed in Exorhabdus 

 differ considerably also in their general facies and are natives 

 of middle Africa. Hister scabripygus, Sell., is described as 

 having the subhumeral stria complete, but I have not seen 

 the species Schmidt describes Hister obtusisternus and 

 mecfiowi as having the inner subhumeral stria complete but 

 this is not correct, anteriorly in both species it gives place to 

 the tine oblique stria very generally seen in the Histeridse. 



Hister belli, Lewis, 1904. 

 There is an example of this species in the British Museum 

 from fierhampur, India, which measures over 11 mm The 

 type specimen measures 9£ mm. 



Hister simulator, sp. n. 



Oblongo-ovatus, parum convexus, niger, nitidus ; fronte stria 

 semicirculari Integra, mandibulis haud canaliculars ; pronoto 

 stria interna Integra, externa paulo breviore; elytria stria sub- 

 humerah nulla 1-4 dorsalibus integris, 5 ante et suturali in 

 medio abbreviate; propygidio parum grosse hand dense punctato • 

 pygidio similiter punctato sed apice lawi ; mesosterno emarginato' 

 stria in medio mterrupta ; tibiis anticis 3-deutatis. 



1. 6-8 mm. 



The facies of the above is extremely similar to hottentotta, 

 Lr., and others of the same group, but it differs by the frontal 

 stria being almost semicircular, by there being no humeral 

 sulcus or stria, and by the larger punctures, n§t very closelv 

 set, of the pygidia. The mesosternum is rather deeplv 

 emarginate and the marginal stria does not pass the 

 emargination. p 



Hob. Senegal. Four examples. 



Hister guinensis, Payk. 

 I have an example from Ashanti which corresponds exactly 



