106 R. W. Dawso7i 



1887. Horn: "Revision of the Species of Lachnosterna of Amer- 

 ica North of Mexico," Trans. Anier. Ent. Soc, xiv, pp. 209- 

 296. (Descriptive notes and table for 81 species.) 



1888. Smith: "Notes on the Species of Lachnosterna of Temper- 

 ate North America, with Descriptions of New Species," Proc. 

 U. S. Nat. Mus., xi, pp. 481-525, pis. xlvii-lx. (Descriptive 

 notes and figures of the genitalia of 87 species.) 



1910. Blatchley: Coleoptera of Indiana, pp. 958-980. (Descriptive 

 notes, table and figures for 35 species.) 



1916. Glasgow: "Phyllophaga Harris (Lachnosterna Hope): A 

 Revision of the Synonymy, and One New Species," Bull. 111. 

 State Lab. Nat. Hist., xi, pp. 365-379. 



1920. Hays and McCoUoch: "Some Observations on the Genitalia 

 of Lachnosterna," Ann. Ent. Soc. Amer., xiii, pp. 75-82, pi. 

 viii. (Nine species figured and discussed.) 



1920. Davis: "New Species and Varieties of Phyllophaga," 111. 

 Nat. Hist. Survey, xiii, pp. 329-338, pis. xl-xlv. (Descriptions 

 of 8 new forms.) 



SYNOPSIS OF THE SPECIES 



1. Upper surface entirely bare and shining 9 



Upper surface, in part at least, more or less covered with scales, 

 or sparse erect hairs, or with a bloom or "powder" (sometimes 

 obscure in old or rubbed specimens) 2 



2. Body above and beneath rather thickly covered by little yellow- 

 ish scales which show a tendency to condense into broad stripes 



on the elytra lanceolata 



Body not covered with scales 3 



3. Upper surface entirely devoid of hair, thorax shining, but elytra 

 covered with a bloom or powder 4 



Upper surface with at least a few erect hairs, sometimes con- 

 spicuous 5 



4. Pronotum rather finely and closely punctured crassissima 



Pronotum coarsely and much less closely pitted prunina 



5. Small, pale or yellowish species, 15 mm., or less in length 6 



212 



