ART. 1 TERTIARY INSECTS FROM ARGENTINA COCKERELL 3 



Sunchal, Dept. Sta. Barbara, Prov. Jiijuy, Argentina, in rock of 

 Tertiary age. 



Holotifpe.—Cat. No. 70809, U.S.N.M. 



The Molannidae, although specialized (by reduction of veins), 

 appear to be on the wane at the present time. Ulmer cites 7 species 

 from the Palaearctic region (excluding Japan), 2 from Japan, 4 from 

 the Nearctic region, and 2 from the Orient. In 1914 Banks added 

 another Nearctic species from Winnipeg. The genus Beraeodes Eaton , 

 found in Baltic amber and the Oligocene of the Isle of Wight, and 

 with also a living European species, is placed under Molannidae by 

 Ulmer in 1909, but excluded from it in 1912. 



COLEOPTERA 



The rather numerous species are represented by elytra and other 

 fragments, in no case complete beetles, and we get the impression 

 that they may have come from the excrement of some insectivorous 

 bird or fish. Under these circumstances accurate determination of 

 the genera is difficult or impossible, but the species describeil should 

 be recognizable. 



OTIORHYNCHITES ATERRIMUS, new species 



Plate 1, fig. 1 



Elytron 5 mm. long and 3 wide; 4 to 5 punctures in 1 mm. of 

 length. Black, convex, with eight broad longitudinal grooves con- 

 taining large round punctures, which are larger than the intervals 

 between them; there are about or rather over 20 punctures in the 

 middle grooves; in addition to the above, along the lower margin 

 is a row of close-set small punctures, the upper part of which is 

 divided into two widely separated rows; apex of elytron obtuse. 



Sunchal, Dept. Sta. Barbara, Prov. Jujuy, Argentina, in rock of 

 Tertiary age. 



Holotype.—C&t. No. 70810, U.S.N.M. 



COSSONUS (7) DEVORATUS, new species 



Plate 1, fig. 2 



Elytron pale brown, parallel-sided; length 6.2, breadth 2 mm.; 

 about five punctures in 1 mm. of length; apex rounded. Ten rows 

 of close-set rather large punctures, so arranged that they form 

 oblique transverse rows; two raised V-shaped marks due to converg- 

 ing ridges near apex. 



Sunchal, Dept. Sta. Barbara, Prov. Jujuy, Argentina, in rock of 

 Tertiary age. 



Holotype.—C&t. No. 70811, U.S.N.M. 



