28 PEOCEEDINGS OF THE NATIONAL MUSEUM voi. 70 



anteriorly, with narrow explanate margin, faintly punctate. Scu- 

 tellum piceous. Elytra rounded, elongate, not wider at base than 

 prothorax, with scarcely perceptible margin, and slight trace of 

 humeral prominences and depression within; punctation coarse and 

 shallow, finer toward apex; entirely dark blue. Body and legs be- 

 neath dark brown, finely pubescent; epipleura piceous. 



Length. — 4 to 4.5 mm. ; width 2 to 2.2 mm. 



Type locality. — Tampa, Fla. 



Distribution. — Georgia, Florida, " Pennsylvania " (British 

 Museum). 



This species comes nearest thyamoides in shape and in lack of 

 humeral or other discal prominences, but is more elongate and has 

 narrower margins, narrower thorax, and larger eyes, and the elytra 

 are entirely blue with no trace of yellow brown. 



20. OEDIONYCHIS THYAMOIDES Crotch 



Figs. 22 and 2.3 



Oedionychis thyamoides Crotch, Proc. Acad. Philadelphia, vol. 25, 1873, p. 

 63.— HOKN, Trans. Amer. Ent. Soc, vol. 16, 1889, p. 191. 



Oval, moderately shining, yelloiw brown, elytra with bronze- 

 black or blue-black oval central area of varying size. Antennae over 

 half as long as body, slender, darker at tip, third and fourth joints 

 equal. Head faintly and finely punctate, median groove tending to 

 be indistinct, interocular space half as wide as head. Pronotum 

 over twice as wide as long, rounded, feebly convex, with wide ex- 

 planate margin, arcuately narrowed anteriorly; shining, nearly 

 impunctate. Scutellum black. Elytra rounded oval, with feeble 

 humeral prominences and moderately wide margin; punctation 

 usually dense and moderately coarse; a broad, oval, bronze or blue- 

 black central area of variable size, sometimes nearly covering elytra 

 except for margin, again narrowed to a broad sutural vitta extend- 

 ing over half of elytra, never reaching apex. Body beneath yellow 

 brown or reddish, finely pubescent, epipleura pale. 



Length. — 3 to 4.5 mm.; width 1.7 to 2.5 mm. 



Type locality. — Western States. 



Distribution. — Colorado, Kansas, Iowa, Tennessee, Ohio, Mary- 

 land, Louisiana, Mississippi, and Texas. 



In shape this species is nearest Oe. indigoptera, but it has much 

 smaller eyes and there is always a yellow brown margin to the 

 elytra. In the material at hand, the specimens from Louisiana, 

 Mississippi, and Texas appear to be much smoother and more finely 

 punctate and shining and the dark central area nearly covers the 

 elytra, leaving only a very narrow yellow margin. 



It has been collected on Teucrium canadense. 



