NORl'H AMERICAN COLEOPTKRA. 143 



tiou is quite feeble; autennai inserted at the middle, not slender, first joint of 

 funicle robust, second one-lialf longer than the third, outer joints wider. Head 

 densely scaly anteriorly. Prothorax scarcely widei' than long, feebly narrowed 

 in front, very broadly but indistinctly constricted at the apex, sides nearly 

 straight in their basal half, not narrowed posteriorly; surface apparently rather 

 closely and coai-sely punctured, punctures concealed by the large scales, which 

 are a trifle less dense each side of median line, thereby giving the appearance 

 of a darker vitta. Elytra fully one-third wider at base than the prothorax, 

 about twice as long as wide, Itumeri promiuent, sides nearly straight for one-half 

 their length, then gradually narrowed to the ajtex, striaj distinct, coarsely and 

 rather remotely punctured, intersi>aces nearly flat, third a little wider than 

 the others; setie long, pale, depresse<l, scarcely elevated above the surface. 

 Prosternura very short before the coxfE, transversely impressed and very broadly 

 emarginate, postocular lobes obsolete. Legs rather robust, thighs strongly cla- 

 vate, tibiae stout, not long, subparallel, terminal hooks quite prominent and dis- 

 tinct; tarsi rather stout, third joint not l)roadly bilobed, but little wider than 

 the second, fourth as long as the two preceding joints together; claws connate 

 beyond the middle. Length 1.75 mm. ; 0.07 inch. 



Hab. — California. A single ntale specimen in Dr. Horn's collec- 

 tion is before nie. According to Casey the beak in the female differs 

 from that of the male only in being more slender and having the 

 antennae, like in the male, inserted at its middle. In the specimen 

 before me the scales on the third interspace and a few spots poste- 

 riorly are a trifle paler. 



cinereus Group. 



The only distinguishing character, separating the species of this 

 from those of the preceding group, is the presence of antecoxal 

 ridges, more or less distinct, limiting a })rosternal sulcus. The pro- 

 sternum, iu consequence, is generally longer in front of the coxse 

 and never transversely impressed. 



The species may be distinguished as follows : 



Scaly vestiture uniformly dense on the elytra. 

 Scales not unicolorous. mottled. 



Fourth tarsal joint projecting fully the length of the third. 

 Scales dark brown or blackish, inconspicuously mottled with jiule spots, a 

 stripe or vitta of ochreous or fulvous scales on each elytron. 

 Larger, prothorax distinctly wider than long, very little narrowed to- 

 ward the base. Plate vii, fig. 13 COgiiatiis. 



Smaller, prothorax about as long as wide, distinctly narrowed toward 



the base. Plate vii, fig. 14 spretus. 



Elytra not vittate. 



Beak distinctly curved, third tarsal joint broadly bilobed. 



Scales blackish brown, indistinctly mottled with pale, elytra almost 



three times the length of the prothorax ciiieruN. 



Scales gray or yellowish ; elytra less than three times the length of the 

 prothorax. 



TRANS. AM. ENT. SOC. XXI. MAY, 1894. 



