30 PROCEEDINGS OF THE NATIONAL MUSEUM vol.70 



Besides being the only entirely pale species known to occur north 

 of Mexico, Oe. -fiavidiOb is remarkable for its narrow oblong shape, 

 by which it is diiferentiated from the several Central American pale, 

 unicolorous species. The small, pale Central American species usu- 

 ally also differ in having antennae with deeply piceous outer joints. 



23. OEDIONYCHIS SALTATRA Blatchley 



Fig. 26 



Oedionpchis saltatra Blatchlett, Can. Ent., vol. 55, 1923, p. 32. 



Rounded oval, moderately shining, moderately convex, yellow 

 brown, elytra piceous with very narrow pale margin and apex. An- 

 tennae slender, half length of body, basal points pale, third and fourth 

 joints equal. Head faintly and finely punctate, sometimes smooth, 

 median depression well marked, interocular space about half width 

 of head, Pronotum nearly three times as wide as long, very faintly 

 and sparsely punctate, with rounded, explanate margin, narrowed 

 anteriorly. Scutellum black. Elytra rounded oval, with narrow, 

 not reflexed explanate margin, humeral prominences and depression 

 within well marked; rounded and more convex at suture than dark- 

 form of subvittata or circumdata; moderately shining, punctation 

 shallower and finer than subvittata or quercata; piceous, apex and 

 narrow edge of margin pale. Body beneath dark brown, shining, 

 sparsely pubescent, epipleura dark. 



Length. — 4 to 5 mm. ; width 2 mm. 



Type locality. — Dunedin, Fla. 



DistHhution. — Florida. 



This species is very closely allied to Oe. quercata and appears to 

 differ from it principally by its narrower explanate margin and 

 traces of yellow brown on elytra, especially at apex. It has, too, 

 smoother and more shining elytra than quercata. It differs from Oe. 

 circuTTidata by being more convex and having arcuate elytra and 

 narrower margin. 



24. OEDIONYCHIS QUERCATA (Fabricius) 



Fig. 27 



Galleruca quercata Fabeicius, Syst. Eleutli., vol. 1, 1801. p. 495. 

 Altiea quercata Olivier, Ent., vol. 6, 1808, p. 687. 



OedionycMs quercata Clabk, Catalogue of Halticidae, Journ. Ent., vol. 2, 1866, 

 p. 167. (Not quercata of American authors.) 



Rounded oval, moderately shining, head and prothorax reddish 

 brown, elytra deep black, sometimes with ferruginous margin. An- 

 tennae slender, half length of body, third and fourth antennal joints 

 nearly equal or third often a little shorter. Head reddish brown 

 without occipital spot, finely and sparsely punctate, median impres- 



