256 PROCEEDINGS OF THE NATIO^^AL MUSEVM. vol. 57. 



and the condition is essentially as in the fossil. In Harpalus, also, 

 the condition is as in the fossil. 



HARPALUS VETERUM, new species. 



Plate 36, fig. 2. 



Length 8 mm.; elytra 5 mm. long and 2 broad. General form and 

 appearance as in Earpalus; the elytra with eight delicate striae, not 

 counting the marginal one; these sharp and not at all punctured. 

 Mandibles stout; eyes 1 mm. apart, rather small for Haryalus; thorax 

 short and broad; scutellum rather large, but its apical angle con- 

 spicuously less than in Harpalus erraticus. 



Type. — U.S.G.S. 143. Roan Mountain, Colorado (Scudder). 



Holotype.—Ceit. No. 66578, U.S.N.M. 



Family CHRYSOMELIDAE. 



LEMA (?) PERVETUSTA, new species. 



Plate 36, fig. 3. 



Elytron about 6.5 mm. long, 3 wdde; of the form usual in the genus, 

 but rather wide; surface as preserved with pustuliform spots due to 

 some secondary deposit, but there is some evidence that there were 

 rows of punctures. Markings consisting of large black areas, covering 

 most of the surface, separated by two narrow transverse colorless 

 bands; there is also a broad humeral dark stripe. The epipleura is 

 colorless below the humeral area, and the dark blotches do not quite 

 extend to the inner margin, which, however, is narrowly edged with 

 dark. The transverse light bands (about 0.5 mm. vn-do) are not quite 

 alike; the first is abruptly turned upw^ard (basad) at each end, on 

 the inner side being separated from the marginal area by a lobe of 

 the second dark patch. The second stripe is oblique, its lower end 

 outward.^ 



Type. — U.S.G.S. 1299. Roan Mountain, Colorado (Scudder). 



Holotype.— Cat. No. 68579, U.S.N.M. 



The fundamental pattern of the elytra of the Chrysomelidae is 

 very ancient, and reappears in many of the subfamilies. The per- 

 sistence of similar tendencies is well shown by the duplication of the 

 same patterns by numerous neotropical species of Lema and Dia- 

 hrotica; genera not closely related. The three dark bands or areas 

 may be broken into spots, or may be modified to form longitudinal 

 stripes. The pattern of the present insect, with the three dark 

 bands so enlarged as to give the effect of two light bands on a dark 

 ground, is not common. I believe I have seen it in a neotropical 

 Lema, but can not now cite the species; it occurs also in Crypto- 

 cephaliis and Dermorhytis. 



1 Since the above was put in type, I have found the leverse (U.S.G.S. 1390), which shows that the 

 elyf rou was luUy 8 mm. long, with three pale bands, and a fourth large dark patch in the apical region. 



