430 WILLIAM (J. DIETZ, M.D. 



finely and not closely punctured, interspaces rugose, each with a row of acute, 

 setigerous granules, setae white, recurved, posterior call.is obsolete; pygidium 

 coarsely punctured, convex ( % ), or slightly foveate ( 9 ) ; underside coarsely 

 punctured, not densely clothed with whitish scales. Legs slender, thinly pubes- 

 cent, femora subclavate, armed with a very small, acute tooth, tibiae long, widened 

 toward the apex, tarsi slender, third broadly bilobed, fourth almost as long as the 

 first two joints together, claws armed with a long tooth, curved towards its fellow. 

 Length 2.75 mm. ; 0.11 inch. 



% . Middle and posterior tibise strongly unguiculate. 



Hab. — Atlantic, Western and Southern States. 



A well-known species ; readily known by its very coarse sculpture, 

 in which it resembles the next species, but from which it is at once 

 distinguished by the 7-jointed funicle and the strongly unguiculated 

 tibipe of the male. 



C. decipieiiN Lee. — Subovate, black, antennse and legs rufous, above very 

 thinly clotlied with pale, piliform scales, a conspicuous scutellar spot of white 

 scales; underside coarsely but not densely punctured, sparsely scaly except on 

 the thoracic side pieces, which are densely clothed with white scales. Beak 

 curved, separated from the head by a transverse impression, a little longer than 

 the prothorax, cylindrical, indistinctly subcarinate, striate and punctured from 

 the base to the insertion of the antenna;, less densely punctured beyond, antenna* 

 moderately stout, inserted a trifle beyond the middle, funicle 6-jointed, joints 1-3 

 elongate, gradually wider, club elliptic. Eyes completely concealed in repose by 

 prominent prothoracic lobes. Head convex, coarsely punctured and pubescent : 

 prothorax wider than long, about one-fourth wider at the base than at the apex, 

 sides subparallel and nearly straight for one-half their length, rounded before the 

 middle, broadly but not deeply constricted behind the apical margin, base emar- 

 ginate each side, lateral tubercles conspicuous, dorsal sulcus obsolete, densely 

 punctured on the sides and on the base, less so on the disc, punctures coarse, a 

 curved line of white scales each side; scutel scarcely visible. Elytra ovate, 

 rather convex, fully two-fifths wider at the base than the prothorax, broadly 

 rounded on the sides from the humerus to the apex, sulcate, rather coarsely punc- 

 tured, punctures separated about their own length, interspaces convex, feebly 

 shining, each with a row of setigerous granules, sette subdepressed, coarse, 

 straight, an ill-defined spot near the base of the seventh and a common sutural 

 spot, at the apex, of white scales, there are also some scattered scales on the de- 

 clivity. Legs not slender, femora subparallel, all armed with an acute tooth, less 

 distinct on the anterior jjair, tibia; rather stout, subj)arallel, very little widened 

 toward the apex, the latter not unguiculate, tarsi slender, third joint bilobed. 

 short, fourth as long as the first joint, claws armed with an acute basal tooth. 

 Length 2.0 2.5 mm. ; 0.08 0.10 inch. 



% . Last ventral segment with a deep, transversely oval fovea, tibia; not 

 unguiculate at the apex. 



Hab. — Colorado, Michigan, Utah, California, Kansas (LeConte), 

 Pennsylvania (my own coll.). 



Very closely resembles the European Rhytidommiis r/lobulus in 

 sculpture and general appearance; this insect, however, has the 



