376 MEMOIRS ON THE COLEOPTERA 



Trichius obesulus n. sp. Stout and of moderately large size, shining, 

 black, the anterior parts generally feebly greenish, the elytra obscure 

 rufous, partially black to wholly black, with a large opaque black area 

 on the flanks posteriorly; vestiture sparse and very short; clypeus trans- 

 verse, very feebly sinuate; prothorax large, much wider than long, 

 strongly, loosely punctate, subimpunctate latero-basally as a rule; elytra 

 only a fourth wider than the prothorax, moderately inflated subbasally, 

 the second and fourth depressed intervals finely, closely punctate, 

 elsewhere more strongly, sparsely punctate; pygidium nearly bald, the 

 hairs very short and sparse, denser near the apex, the sides rather broadly 

 white; legs moderate, black. Length (of 9) 10.0-12.0 mm.; width 5.4- 

 6.7 mm. Florida (Jacksonville). 



The description is taken from the female; the male has the thoracic 

 punctures finer and more close-set and the pygidium more convex. 



Trichius viridulus ssp. semiviridis nov. Moderately narrow, shining, 

 black, with strong green metallic lustre anteriorly, the elytra rufo- 

 testaceous, with feebler green reflection, the pygidium metallic green; 

 clypeus parallel, nearly as long as wide, distinctly sinuate; prothorax 

 parallel, abruptly oblique at the sides in apical third; surface strongly, 

 not densely punctate; elytra two-fifths wider than the prothorax, moder- 

 ately inflated subbasally; surface almost uniformly, rather sparsely 

 though strongly punctate, the fourth interval more closely basally; 

 flanks polished throughout, with an anterior short, and posterior long, 

 transverse white line; pygidium convex, with short and very sparse 

 hair, the lateral white area prolonged inward at base as a rule; legs 

 rather short, with green metallic lustre. Length (cf 9 ) 10.0-11.0 mm.; 

 width 5.0-5.7 mm. Florida (Marion Co.). 



Allied to viridulus but less stout and differing in the more parallel, 

 anteriorly obliquely narrowed prothorax, rufescent elytra, much 

 less densely punctate on the flanks and with more developed trans- 

 verse white lines. One example, apparently not differing other- 

 wise, has the metallic green replaced by bluish-black throughout. 



Trichius carolinensis n. sp. Smaller, shining, uniform blackish-blue 

 throughout, the legs greenish-black; pubescence short, sparse and in- 

 conspicuous; clypeus notably shorter than wide, distinctly sinuate; 

 prothorax short, much wider than long, the sides subparallel and arcuate, 

 more converging in apical third; surface strongly but rather sparsely 

 punctate, the erect hairs fine; elytra not quite as long as wide, two-fifths 

 wider than the prothorax, the sides arcuate, gradually converging pos- 

 teriorly; surface almost uniformly, rather finely punctate, the fourth 

 interval more closely but not depressed, the flanks subrugose, shining, 

 with two very small and short transverse white spots; pygidium convex, 

 sparsely sculptured and with very short sparse inconspicuous hairs, the 

 usual lateral white areas well developed; hind tarsi (cf ) not quite twice 

 as long as the tibia?. Length (cf ) 9.0 mm.; width 4.5 mm. North 

 Carolina (Southern Pines), Manee. 



