Jensen-Haarup, New species of Coleoptera from West Argentina. 543 



Berosus obsolet tis n. sp. Reg. i. 1. 



Very similar to B. stenocoptus, but much larger (long. 7 mm). 

 The somewhat irregulär row of punctures on the 2°^ and the 

 4^^ interstice much finer. In some specimens the antennae and 

 palpi turn more or less dark or pitchy brown. 



Prov. Mendoza. 



Berosus üs singi n. sp. 



Easily recognized by its dark colour with paler side margins 

 of thorax and especially the margins of elytra from the middle 

 to the apex. Head black , but in front on each side (from eyes 

 to labrum) with a bright clayey yellowish spot , which is com- 

 paratively well defined. Head and thorax finely punctate. Striae 

 of elytra deep and strongly punctured ; interstices finely or in- 

 distinctly punctate, but the alternate interstices (2"*^, 4^^^, 6*^ etc.) 

 each with a row of distinct punctures. Apex of elytra simple. 

 Antennae , palpi and legs from dirty yellowish to pitchy brown. 

 Long. 2 — 2^1 2 mm. 



Very common in the districts round Mendoza. 



Dedicated to Mr. Hj. Ussing i Randers, a keen observer 

 of the lower, marine fauna. 



Berosus multimaculatus n. sp. 



Very easily recognized by its bright clayey yellowish elytra 

 provided with numerous dispersed and well defined small spots, 

 which, as a rule, do not extend over more than one or two inter- 

 stices and only flow together to an irregulär , somewhat serrate, 

 transversal spot or fascia near the apex. Head pitchy brown, 

 with some metallic shine. Thorax reddish yellow , with 2—4 

 more or less confluent spots , of which the two in the middle 

 are the largest and most prolonged ; its punctuation fine. Striae 

 of elytra rather strongly punctured ; interstices indistinctly 

 punctate , but alternate Striae (2^^, 4*^ and 6*^ etc.) with a row 

 of larger punctures ; apex of elytra simple. Antennae, palpi and 

 legs pale yellow. Long. 2 — 2^2 nim. 



Round Mendoza ; not rare. 



Berosus coptogonus n. sp. Reg. i. 1. 

 Head, thorax and elytra pale yellow; the latter with some 

 badly defined shadowy spots. Head and thorax finely and in- 

 distinctly punctate. Elytra finely punctate-striate; striae with a 

 row of stronger punctures against the apex; alternate striao 

 (2nd^ 4th ^^^ ßth g^c.) with the usual row of punctures. Sutural 

 edge of elytra terminating in a diverging, tootlilike angle. An- 



