Species o/"Histerida3. 



457 



Teretriosoma the chief generic character is the doable 

 pygidium, and virens, chalybceum, facetum, festivum, are 

 species which clearly belong to it ; but Teretrius somerseti is 

 an insect that comes between Horn's genus and a typical 

 Teretrius, and if Horn had known T. somerseti he could not, on 

 the principles he has laid down, have given higher, if as high, 

 rank to Teretriosoma than he accords to Phelister in his 

 synopsis of 1873. 



I am willing to recognize Teretriosoma, but while doing so 

 I think it consistent to accept also such genera as Pachy- 

 lopus, considered synonymous with Saprinus by Horn, 

 especially as by accepting it the genus Saprinus is somewhat 

 reduced ; and this last genus even now, when collections 

 contain many novelties, comprises 330 species. 



I have a collection containing over 1000 species of His- 

 terida?, and this enables me to give comparative notes of the 

 differences between most of the new species and old ones, and 

 these memoranda are to my mind, in a group like the present, 

 the more valuable part of a description. 



List of Slides, arranged generically. 



Hololepta pilipes. 



flagellata, Kirhy. 



Placodes ebeuinus. 

 Apobletes esurialis. 



cavatus. 



Platysonia novum. 



Robestorfi. 



planistemum. 



restoratuin, Walker. 



desinens, Walker. 



abyssinicum. 



cinnamouieuro, Tf^ite. 



elingue. 



dufali, Marseul. 



directum. 



Pacbycraerus nigro-cseruleus. 

 Baconia loricata. 



patula. 



Hister mundissimus, Walker, 



luciscus. 



somali. 



decollatus, Roth. 



glabratus, Roth. 



regularis, Leconte. 



metallicus. 



castus. 



Hister femoralis, Motsch. 



castaueus. 



pusio, Erichson. 



prsecox, Erichson. 



Paromalus locellus. 



oblisus. 



— — commeatus. 

 Coelocrtera nitida. 

 Renia meticulosa. 

 Dendrophilus sulcatus, Motsch. 



finitimus, Walker. 



Sapriuus aequalis, Walker. 



rubripes, Walker. 



Styphrus corpulentus, Motsch. 

 Xeuouychus altus. 

 Pacbylopus ripse. 

 Tryponasus torpedo. 



bombacis. 



veda. 



Teretrius asstivus. 



pulex, Fairm. 



Homalopygus commensalis. 

 Teratosoma longipes. 

 Chlamydopsis iuquilina. 

 Onthopliilus foveipennis. 

 hova. 



