104 PROCEEDINGS OF THE NATIONAL MUSEUM vol.87 



Subg. Caloderma Csy., 1886, p. 5. 



angulatum Cay. (Caloderma) (Medon) (Type) North America 



rugosum Csy. (Caloderma) (Medon) (Type) North America 



aemibrunneum Csy. (Caloderma) (Medon) (Type) North America 



Subg. Trachyseetus Csy., 1886, p. 32. 



confluentum Say (Lathrobium) (Medon) (Csy) North America 



Medon Steph., 1832, p. 273. 



Ozymedon Csy., 1905, p. 177. 



Subg. Medon s. str. 



americanum Csy. (Medon) (Type).... North America 



brunrteum Er, (Lithocharis) (Reitt) Europe 



eurtiUum Er. (Lithocharis) (Cam, REB) ..South America 



fuseulum Mann. (Rugilus) (CC)... .Europe, northern Africa 



oblitum Er. (Lithocharis) (Cam, REB) South America 



rubrum Csy. (Oxy medon) (Type) -.. North America 



texanum Csy, (Medon) (Type) North America 



Subg. Tetramedon Csy., 1905, p. 178. 



rufipenne Csy. (Tetramedon) (Type) North America 



Subg. Paramedon Csy., 1905, p. 166. 



Platymedon Csy., 1889, p. 184. 



arizonicum Csy. (Paramedon) (Type) North America 



boreale Csy. (Paramedon) (Type) North America 



conforme Csy. (Paramedon) (Type) North America 



eonsanguineum Csy. (Lithocharis) (Type) North America 



contiguum Csy. (Lithocharis) (Type).- North America 



eonvergens Csy. (Lithocharis) (Type). ...North America 



debile Csy. (Paramedon) (Type) North America 



difforme Csy, (Paramedon) (Type) . North America 



distant Csy. (Paramedon) (Type) North America 



explicans Csy. (Medon) (Type) North America 



gregale Csy, (Lithocharis) (Type) North America 



gulare Csy. (Paramedon) (Type) North America 



helenae Csy. (Medon) (Type) North America 



humboldti Csy, (Paramedon) (Type) North America 



inquilinum Csy, (Medon) (Type).. North America 



insulare Csy, (Medon) (Type) North America 



kernianum Csy. (Paramedon) (Type) North America 



lacustre Csy. (Medon) (Type) North America 



languidum Csy. (Lithocharis) (Type) ...North America 



laticolle Csy. (Platymedon) (Type) North America 



latiusculum Csy. (Lithocharis) (Type) ..North America 



lepidum Csy. (Lithocharis) (Type) North America 



luctuosum Csy. (Lithocharis) (Type) North America 



malacum Csy. (Lithocharis) (Type) ..North America 



mimulum Csy, (Lithocharis) (Type) .North America 



montanum Csy. (Paramedon) (Type) North America 



nevadicum Csy. (Platymedon) (Type) North America 



nitidulum Csy. (Medon) (Type) North America 



oriens Csy. (Paramedon) (Type). North America 



paUescens Csy. (Paramedon) (Type). North America 



pallidipenne Csy. (Paramedon) (Type) North America 



puberulum Csy, (Lithocharis) (Type) ....North America 



retrusum Csy. (Lithocharis) (Type) North America 



stnuatocolle Csy. (Lithochans) (Type) ..North America 



