340 Mr. G. Lewis on 



and aiitcnnfic arc reddish browiij anterior tibia3 with seven 

 denticulations. 



This species is more cylindrical and elongate than any- 

 other known. There are now nearly forty species of tin's 

 genus described, and others exist in collections, and they are 

 very difficult to characterize intellig-cntly. 



ilab. Argentina, Province of Buenos Aires {H. Eichter). 



Eutidium jyeruanum, sp. n. 



Oblongo-ovatum, convexiusculum, nigrum, nitidum ; fronte plana 

 baud striata ; pronoto impunctato ; elytris striis 1 -2 brevibus, 

 ca^tcris nullis ; pygidio grossc punctato, apico transversim la3vi. 



L. 6| mill, (absque mandibulis). 



Oblong-oval, slightly convex, black and shining ; the 

 forehead is not striate, but in certain lights transverse 

 impressions may be seen which apparently correspond to 

 strisej the thorax is laterally impunctate ; the elytra, striaj 

 .1.-2 are basal and very short, the outer one longest ; the 

 propygidium is sparsely punctate on its lateral edges and 

 rather widely biimpressed apically ; the pygidlum is coarsely 

 punctured, with the posterior margin smooth ; the prosternal 

 keel is narrowed before the coxa3. 



The large size, the more oblong form, and the coarse 

 punctuation of the pygidlum distinguish this species from the 

 other four known. 



Ilab. Peru. 



Tereirius \_Teretr{osoma'^^ montnnus, Horn, Tr. Amer. Ent. 

 See. viii. p. 143 (1880). 



" Black, shining. Thorax a little wider than long, rather 

 finely punctate, tlie punctures denser in front. Elytra not 

 more densely punctured than the posterior portion of the 

 thorax. Prosternum sparsely punctate, the tip distinctly 

 grooved. Mesosternum sparsely and finely punctate, without 

 marginal line. Anterior tibioe rather strongly bidentate at 

 middle, the posterior bispinose near the tip. 



''Length '10 inch (2-5 mm.). 



" Ilah. Colorado. 



"Of the same form as americanus lTeretrioso7na'] , but 

 larger and with different dentate tibiae." 



Tereirius levatus, Horn, Proc. Calif. Ac. iv. p. 3G5 (1891). 

 " Cylindrical, piceous black, shining ; legs brown. Head 

 finely, not closely punctate. Thorax sparsely punctate, fine 



