192 BULLETIN 14 5, UNITED STATES NATIONAL MUSEUM 



feebly imbricate-punctate, and sparsely clothed with short, recumbent 

 whitish hairs. 



Abdomen beneath obsoletely granulose, finely punctate, sparsely 

 at the middle, more densely at the sides, the punctures connected 

 transversely by sinuate lines, which are coarser on the basal segment, 

 and sparsely clothed with short, recumbent, whitish hairs; first seg- 

 ment convex at middle; last segment broadly rounded at apex; ver- 

 tical portions of segments sparsely pubescent; pygidium densely, 

 coarsely punctate, strongly carinate, but the carina not projecting. 

 Prosternum coarsely, sparsely punctate, and clothed with a few re- 

 cumbent, white hairs; prosternal lobe broad, feebly declivous, and 

 very feebly, broadly emarginate in front; prosternal process broad, 

 the sides parallel to behind the coxal cavities, then obliquely nar- 

 rowed to the apex, which is acute. Tibiae slender, and without a 

 tooth on inner margin at apex. Posterior tarsi shorter than tibiae, 

 and the first joint as long as the following two joints united. Tarsal 

 claws similar on all feet, cleft near the middle, the inner tooth broad, 

 shorter than outer one, and not turned inward. 



Length, 8.25 mm.; width, 2.25 mm. 



Male. — Differs from the female in having the front of head feebly 

 expanded at the middle; anterior and middle tibiae armed with a 

 short tooth on inner margin at apex, and the last abdominal segment 

 emarginate at apex. 



Redescribed from the female type (No. 1) in the Museum of 

 Comparative Zoology. 



Type localities. — Of obolinus, Kansas; type in Museum of Com- 

 parative Zoology. Of knuusi, Belvidere, Kans. ; type in the Museum 

 of the Brooklyn Institute. 



Distribution. — The only specimens examined, which could be con- 

 sidered as this species, are from the type localities and which have 

 been distributed in various collections. From the material examined 

 its range seems to be confined to Kansas. 



Variations. — This species varies in color from a bronzy green, with 

 a slightly cupreous tinge, to reddish or brownish cupreous, the 

 median depression on pronotum varies more or less in depth, the 

 prehumeral carinae are usually vaguely indicated, but sometimes the 

 carinae are replaced by round elevations, and in nearly all of the 

 examples examined the prosternal lobe is more deeply emarginate 

 in front than in the type. 



Host. — The larval habits are not known, but H. F. Wickham has 

 collected the adults on elm {TJVinus sp.). 



LeConte (1859) described the species from a single female from 

 Kansas, and Schaeffer (1909) described the same species under the 

 name of knausi from a single male collected at Belvidere, Kans. 



