tiew Species o/'IIisteridio. 101 



Tills is all ; and T regret reinstating names introduced so 

 casually, but the rules of nomenclature apparently demand it*. 



Hister ]\larseuli, sp. n. 



Breviter ovatus, convexiusculus, niger, nitidus ; fronte stria integra, 

 labro trigono ; pronoto stria laterali interna integra basi baud 

 iiicurvata, externa ante medium abbreviata ; elytris striis 1-3 

 integris, 4-5 basi multo abbreviatis ; pygidio levissime punctu- 

 lato ; mesosteruo margine bistriato ; tibiis anticis 3-dentatis. 



L. 8| mill. 



Shortly oval, somewhat convex, black and shining; the 

 head, frontal stria complete, labrum triangular; the thorax, 

 outer lateral stria confined to the region of the anterior angle, 

 inner strong and complete, with a rather wide interstice, not 

 incurved at the base, finely crenate behind the neck ; the 

 elytra, strise, subhumeral deep but shortened at both ends, 

 1-3 dorsal complete, but the third is lightly impressed apically, 

 4-5 faint, punctiform and well shortened anteriorly, sutural 

 stria discal and bending from the suture at both ends ; pygidia 

 somewhat opaque, microscopically punctured, and there is a 

 fine raised exterior margin to the pygidium ; the mesosternuni 

 is emarginate, with a stria on each side of the emargination, 

 and behind it, leaving a rather wide margin, is a complete 

 stria which turns to the outer edge at the suture and does not 

 join the metasternal stria ; the anterior tibijB are 3-dentate. 



This species closely resembles H. adjectus, Mars., but it is 

 less oval and the thoracic stria is not incurved at the base, 

 the pygidia are more minutely punctured, and the meso- 

 sternum has two marginal striee. Hister adjectus, Mars., is 

 reported from Natal, and the specimens I have determined as 

 such are from Kamerun and the French Sudan; and I may 

 not know Marseul's species except from description. 



Hah. Kegion of the Upper Congo. 



The form of the pygidium of the above is similar to 

 the pygidia of Pachylister cajjer, Er., ceylanus, Mars., pycjidi- 

 alis, Lew., besides Hister adjectus, Mars., and others ; but 

 this structure does not at present suggest itself to be of generic 

 importance. 



Hister siniilis, sp. n. 



Ovatus, convexus, niger, nitidus ; froute leviter puuctulata, stria 



* Since writing the above I find that Rey's names are preoccupied — 

 tlie first in Ilemiptera (1848), the second in Pisces (1854) and iu (Joleo- 

 ptera (1804). 



