280 GEO. H. HORN, M. D. 



pieces not concealed. Posterior coxse contiguous. Abdomen with six segments. 

 Legs moderate, femora stout, tibiae spinulose externally and with moderate 

 spurs, stouter in the male. Tarsi five-jointed on all the feet in both sexes, 

 joints 1 — 4 gradually decreasing in length, fifth longer. 



The only exception to any of the above characters is found in 

 Matfhewsii, in which the third joint of the antenna is longer than 

 usual and is a little longer than the next two together. 



Our species although not numerous seem to equal the entire number 

 known from other countries, and are readily known by their male 

 characters. They may be arranged as follows : 



Labrum broadly eraarginate. Posterior femora not differing in the sexes, the 

 male not toothed. 

 Third joint of antennae as long as the next two; intervals of elytra moder- 

 ately densely punctate or wrinkled IVIattliewsii Cr. 



Third joint not as long as the next two; intervals of elytra with a single 

 row of fine punctures and finely obliquely strigose...Strigilatus n. sp. 

 Labrum deeply bilobed. Posterior femora dissimilar in the sexes, always 

 broader and stouter in the male and usually toothed. 

 Posterior femur % distinctly toothed. 



Tooth of femur longer than wide, obliquely truncate; punctuation of 



elytra confused loiigulus Lee. 



Tooth of femur as broad as long, obliquely truncate ; punctuation of elytra 



deep and substriate substriatas Lee. 



Tooth of femur triangular, acute at tip; punctuation of elytra striate 



but feeble latidens Lee. 



Posterior femur broad, oval, without tooth. 



Punctuation of elytra substriate and coarse obtusus Lee. 



H. Matthewsii Crotch. — Oblong, castaneous or piceo-rufous, shining. 

 Labrum broadly emarginate. Head sparsely punctate, vertex with slight 

 impression. Thorax broader than long, somewhat variable in shape, either 

 slightly narrowed in front or not, apex and base truncate, sides moderately 

 arcuate, hind angles distinct but obtuse, surface finely punctulate, the punctures 

 coarser and sparser along the base. Elytra scarcely wider than the thorax, 

 oblong-oval, with eight entire striae of fine and closely placed punctures, 

 Butural stria deeper, intervals flat finely punctulate transversely wrinkled, 

 the alternate intervals with coarser distant punctures. Body beneath sparsely 

 punctate, slightly pubescent. Legs paler. Length .14 — .24 inch ; 3.5 — 6 mm. 

 (PI. VI, fig. 16). 



Male. — Anterior and middle tarsi very slightly dilated, the anterior tibiae 

 broader and serrulate, the femora stouter than in the female, and the posterior 

 more deeply canaliculate. 



Female. — Tarsi slender. Anterior tibiae spinulose less dilated than the male. 

 Tibial spurs, especially those of the anterior tibiae much smaller. 



In several females before me the mandibles have a distinct 

 tooth on the anterior edge beneath, less developed in the right 

 mandible. This is however very variable and in cue specimen 

 barely distinct. 



