4 PROCEEDINGS OF THE NATIONAL. MUSEUM vol.68 



In the same piece of rock as the type of Molanna derosa, and only 



5 mm. from it. This may not be a true Cossonus, but it is more 

 convincing than the two fossil species recorded by Scudder from 

 North America so far as the shape of the elytron goes. C. (?) devora- 

 tus might be referred to such a Chrysomelid genus as Anisodera or 

 Anisoderoi)sis but it is easily separated by the punctures not being 

 in geminate rows. 



ANTHONOMUS (?) SUNCHALENSIS, new species 



Plate 1, figs. 3, 4 



Elytron dark reddish brown; length 5 mm., breadth 2.4 mm.; 

 outer (upper) margin gently convex, apex obtusely angled. Nine 

 fine punctate striae, the punctures small and somewhat elongate, 

 over 30 in each stria; distance between successive punctures about 

 half the distance between striae; the striae converge apically, the 

 innermost meeting some distance before the apex. A dehcate linear 

 groove runs parallel with and close to the margin. 



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

 Tertiary age. 



Holotyjye.— Cat. No. 70812, U.S.N.M. 



The arrangement of the striae suggests Anthonomus, but of course 

 whatever scales (or pubescence) may have existed have been lost. 

 The type is on the same piece of rock as Cossonus devoratus, and less 

 than 2 mm. from it. Other elytra of A. (?) sunchalensis are on the 

 same rock. 



CURCULIONITES HARRINGTONI, new species 



Plate 1, fig. 5 



Elytron 5.5 mm. long, 2.5 mm. wide; black, moderately convex, 

 apex very obtuse, eight punctured striae, the punctures small and 

 round, striae separated by distances much greater than those between 

 successive punctures. 



Sunchal, Argentina, in rock of Tertiary age. Named after the 

 discoverer of the first Tertiary insects known from Argentina. 



HolotyiJe.— Cut. No. 70813, U.S.N.M. 



CURCULIONITES JUJUYENSIS, new species 



Plate 1, fig. 6 



Elytron 2.5 mm. long, 1 mm. wide; pale brown, moderately convex, 

 apex obtuse but subangulate; nine rows of strong, large punctures, 

 over 20 in a row. 



Sunchal, Argentina, in rock of Tertiary age. 



Holotype.— Cat. No. 70814, U.S.N.M. 



