492 TERTIARY INSECTS OF NORTH AMERICA. 



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broad and taper regularly from near the base to near the tip, show no mark 

 of such asperities, but are profusely punctate in black, made up of scattered 

 punctse, about 0.03 mm in diameter, not altogether irregularly disposed, 

 although at first sight having that appearance, but showing in many places, 

 not uniformly, signs of a longitudinal distribution into from fourteen to 

 sixteen rows. The elytra, indeed, resemble those of Bostrychus capucinus 

 (Linn.), but I am not aware that similar markings occur on smaller Ptinidoe. 



Length of body, 4.3 mm ; breadth of same, 2 mm ; length of elytra, 3.15 mm . 



Green River, Wyoming. Two specimens, Nos. 97 (Dr. A. S. Packard) 

 and 4038 (S. H. Scudder). 



ANOBIUM ? DECEPTUM. 

 PI. 8, Fig-. 18. 



Anolium deceptum Scudd., Bull. U. S. Geol. Geogr. Surv. Terr., IV, 763 (1878). 



Another specimen, representing an elytron only, evidently belongs to 

 the same genus as the last, and at first sight appeared to be of the same 

 species, as it belongs to an insect of the same size, and the punctures on the 

 elytra are similarly disposed ; they are, however, if anything, more thickly 

 crowded, so as to form about eighteen rows in the rather broader elytron ; 

 and not only is the elytron broader and shorter than in the preceding spe- 

 cies, being less than two and a half times longer than broad, but it scarcely 

 tapers at all in the basal three-fifths, and beyond that more rapidly than in 

 the species last described. 



Length of elytron, 3 mm ; breadth of same, 1.25 mm . 



Green River, Wyoming. One specimen, No. 4086. 



ANOBIUM LIGNITUM. 



PI. 8, Fig. 24. 







Anobium Hgnitum Scudd., Bull. U. S. Geol. Geogr. Surv. Terr., IV, 763 (1878). 



A third species of this family, with irregularly punctate elytra, is rep- 

 resented by a single specimen, giving a dorsal view of pronotum and elytra. 

 It differs generically from the two preceding species, and agrees better with 

 Anobium proper in having a more gibbous and less conical prothorax, and 

 in having the sides of the elytra parallel through most of their extent. It 

 is considerably smaller than either of the preceding species. The prothorax 



