Jayne.] ^«^4: [June Hi, 



ly punctate. Antennn3 rufous. Thorax very convex in front, lateral 

 margin not visible from above, finely and densely punctate, no distinct 

 basal fovese, pubescent only at sides and front, leaving a large triangular 

 median space, naked. Scutellum clothed with orange-yellow hairs. 

 Elytra black, finely and densely punctate, hardly any appearance of striae, 

 covered with sparse, cinereous, semi-erect pubescence. Body beneath 

 clothed with long dense white hairs, a row of black spots on each side of 

 abdomen, the fourth segment alone marked bj'^ a median pit, which bears 

 a bunch of brown hairs ; last segment brown, except two white spots on 

 either side of median line. Legs covered with brown hair. Fenlora not 

 distinctlj" annulated. Basal half almost entirely yellowish-white. Length 

 .36 inch ; 9 mm. 



The male of this species can be recognized at once by the single ab- 

 dominal pit on the fourth segment ; the female by the convex, naked at 

 disc, thorax ; the uniform, color of the upper surface, and the abdominal 

 spots and indistinct markings on femora, which are important characters, 

 common to both sexes. 



ATTAGENUS Latr. 



Head small, front wide and flat, ocellus distinct. Epistoma short. Eyes 

 round, entire, moderately prominent. Antennae eleven-jointed, termi- 

 nated by a three-jointed club, which varies greatly in the difterent species. 

 Mouth parts not protected by prosternum, thorax convex, at base not quite 

 twice as wide as long, apex half as wide as base, which is strongly bi- 

 sinuate, sides arcuate, hind angles prominent. Scutellum small but dis- 

 tinct. Elytra elongate, moderately convex, apices hardly separately 

 rounded. No antennal fossae, prosternum not lobed in front, broad and 

 moderately long, except in varicolor, in which it is narrow and short, pro- 

 longed behind into a tip which is acute, and extends slightly beyond the 

 anterior coxae. Mesosternum narrow, moderately long (very long in 

 Hornii), sulcate anteriorly, mesocoxae not widely separated. Posterior 

 coxal plate yavj long, prominent, narrow, obliquely truncate externally. 

 Legs stout, femora channeled beneath for tibiae ; first joint of tarsi very 

 short, 2-5 successively larger. 



The distinguishing characters of this genus are the narrow, emarginate 

 mesosternum, prosternum simple in front, the 11-jointed antenn:ie and 

 absence of antenna! fosss, and the long prominent hind coxal plate. 



The following table is put forth to aid in separating our species : 



Prosternum broad, moderately long. 

 Elytra uniformly black or piccous. Last joint of male club 

 four or five times as long as the preceding two united, 

 which are very small. 



Pubescence on elytra uniformly dark and sparse piceus. 



Pubescence on elytra dense and white on a smooth spot 



at middle, on each side of suture pellio. 



