116 GEO. H. HORN, M. D. 



narrowly prolouged between the coxte. Legs yellow, the basal half of the 

 femora piceous. Length .20 inch. ; 5 mm. 



Male. — First joint of anterior and middle tarsi slightly thickened. Last ven- 

 tral broadly truncate, disc smooth. 

 Female. — Last ventral oval at tip. 



The first joint of tlie hind tarsus is nearly a third the length of 

 tibia, hut not as long as the following joints together. 



This species is easily distinguished by its sculpture and color of 

 legs from LecontU and from cyanellus by the more nearly square 

 thorax. 



The elytral punctuation varies in distinctness, the males before me 

 are smoother than the females. 



Occurs in New Hampshire, Massachusetts, Pennsylvania, Georgia, 

 Illinois, Kansas. 



L<. cyanellus Lee, Proc. Acad. 1865, p. 209. — Oblong-oval, beneath piceous, 

 above blue. Antemise entirely yellow, a little longer than half the body, joints 

 2-3-4 gradually longer. Head indistinctly alutaceous, the transverse depression 

 deep, entire, deflexed at middle. Thorax nearly a third wider than long, widest 

 at middle, sides regularly arcuate, hind angles not prominent, disc convex, 

 smooth, sparsely punctate at sides and base. Elytra not twice as long as wide, 

 sides slightly arcuate, disc shining, indistinctly alutaceous, sparsely finely punc- 

 tate; prosteruum very narrowly prolonged between the coxae. Legs usually 

 entirely yellow, rarely with the middle and posterior femora infuscate near the 

 base. Length .12 — .18 inch. ; 3 — 4.5 mm. 



Male. — Front and middle tarsi not dilated. Last ventral truncate, disc smooth. 



Female. — Last ventral oval. 



The first joint of the hind tarsus is not more than a fourth the 

 length of the tibia and shorter than the following joints together. 



This species is more shining than either meraca or LecontU, and 

 less distinctly punctate than the former. It has a broader thorax 

 than either, and with less prominent hind angles. 

 Occurs in Pennsylvania, Missouri, Illinois. 



El. siiiai'ag(liuu!>i Lee, Proc. Acad. 1859, p. 286.— Form moderately elon- 

 gate, beneath and legs black, above blue. Antennae two-thirds the length of 

 body, piceous, the four basal joints pale beneath, joints 2-3-4 gradually longer. 

 Head iudistinctly alutaceous, the transverse impression deep and entire. Thorax 

 one-fourth wider than long, sides slightly arcuate in front, then oblique to base, 

 hind angles not prominent, disc moderately convex, indistinctly alutaceous, 

 sparsely punctate. Elytra fully twice as long as wide, sides parallel, surface in- 

 distinctly alutaceous, sparsely finely punctate; prosteruum vei-y narrowly pro- 

 longed between the coxse. Length .23 inch. ; 6 mm. 



JfaZe.— Last ventral obtusely truncate, the surface smooth ; first joint of an- 

 terior aud middle tarsi slightly dilated. 



First joint of hind tarsus scarcely one-third as long as the til)iu 

 and shorter than the following joints together. 



