AMERICAN COLEOPTERA. 351 



varies a good deal in coloring; a specimen in Mr. Ulke's collection 

 has a discoidal black spot on the thorax. 



b. — Body beneath black. 

 It. COnvexicollis, Horn, Trans. Am. Ent. Soc, 1868, p. 140.— Elongate, 

 parallel, black, head between the eyes and thorax red; head sparingly, clypeus 

 deeply punctate ; thorax quadrate, convex, narrowed towards the base, sides 

 strongly rounded, base finely margined, striolse well marked, divergent, with a 

 black line extending across the middle; elytra finely punctate striate, inter- 

 stices impunctate but transversely rugulose; ventral segment punctulate, es- 

 pecially at the sides. L. - 47 inch. 



Owen's Valley, California. (Horn.) 



I>. lieta, Lee. Proc. Phil., vii., 159,3.— Elongate, parallel, black, head and 

 thorax clear red, obsoletely punctate, the latter rounded at the sides, rather 

 elongate, basal striola short but defined; elytra black, punctate striate, inter- 

 stices punctulate; ventral segments punctulate. L. -30— -35 inch. 



Kansas River, Colorado, Texas. (Leconte, Horn, Ulke.) 

 Distinct by the punctate interstices. 



I.. L,eeontoi, sp. n.— Elongate, parallel, greenish-black, thorax reddish- 

 yellow with a rather large green discoidal spot; head and thorax sjjaringly but 

 distinctly punctate, the latter but little convex, base margined, not impressed, 

 the striolte faint; elytra punctate striate, interstices with a few scattered punc- 

 tures; underside of the abdomen faintly punctate, metasternum uniformly 

 sparsely and clearly punctate, prosternum rather deeply punctate. L. "46 inch. 



Illinois. (Leconte.) 



The antenna; are rather elongate, club loose, last joint elongate. 



Ii. collar is. Lee. Proc. Phil., vii., 159, 4.— Elongate, narrow, brassy-black, 

 thorax red; obsoletely punctured, sub-elongate, base lightly impressed, striolse 

 almost obsolete; elytra punctate striate, interstices appearing obsoletely but 

 thickly punctulate ; underside nearly smooth. L. - 32 inch. 

 Georgia (Leconte.) 



!«. gracilis, Newm. Ent. Mag. v., 390; bicolor, \ Latr. Hist. Nat. xii., 35; 

 Latreillei, Lee. Proc. Phil, vii., 160, 7. — Elongate, parallel, greenish-black, head 

 in front, thorax (with a discoidal, vitta greenish) and mesosternum red; tho- 

 rax sparsely punctate, elongate, parallel, not convex, no basal striolse; elytra 

 deeply punctate striate, interstices very sparingly punctulate; underside very 

 sparingly, mesosternum closely and roughly punctate. L. -35 — -40 inch. 



Var. inornata, Randall, Bost. J. N. H. ii., 48.-Thorax entirely greenish-black. 

 New York, Pennsylvania, Maine, Illinois, Washington. (Leconte, 

 Horn, Ulke.) 



V. de Motschulsky (in Schrenck's Iieise in Arnurlande, Bd. II. Lief. 

 2. 1860) has described some additional species from the United States, 

 which, however are not easy to identify. 



