40 PROCEEDINGS OF THE NATIONAL MUSEUM vol.82 



Desci^lption. — Paler than typical specimens of fv/mata^ the pro- 

 notum with only two spots anteriorly, undersurface pale. Easily 

 distinguished from D. caroliniana by the dark labrum, and longer 

 antennae. Length, 6 mm. 



Type and four paratypes in United States National Museum. 



Type locality. — Delchamps, Ala. 



Distribution. — Alabama (Delchamps, Baldwin Coimty). 



16. DISONYCHA LATIFRONS Schaeflfer 



Plate 4, Figure 20 



Disonycha latifrons Schajeffee, Journ. New York Ent. Soc, vol. 27, p. 336, 1919 

 (Fort Defiance, Ariz.; type, U.S.N.M. No. 42420). 



Description, — Broadly oblong oval, smooth, feebly shining; pale, 

 head with labrum always and occiput behind eyes usually dark, pro- 

 notum with 2 roundish spots, often wider than long and usually 

 small and not close together, but in darker specimens all 6 pronotal 

 spots present and the anterior ones sometimes coalescing; elytra 

 with narrow sutural and submarginal vittae united at apex, median 

 vitta wider; body beneath sometimes entirely pale (in eastern va- 

 riety), but usually with mesosternum except in middle, metasternum, 

 and abdomen, except the last segments, dark; tibiae and tarsi dark. 

 Head with interocular space considerably more than half width of 

 head; interantennal area broad, flat, not produced; frontal tubercles 

 very faintly marked, sometimes not at all defined but continuous 

 with front ; smooth, shining, with a group of punctures on each side 

 about fovea ; pale, with labrum always dark and occiput behind eyes 

 usually dark. Antennae short, dark, with paler basal joints, third 

 joint considerably shorter than fourth. Prothorax fully twice as 

 wide as long, convex, with only slight median basal depression; 

 somewhat narrowed anteriorly with arcuate sides; surface minutely 

 alutaceous and finely punctate ; pale with 2 roundish spots anteriorly, 

 not close together, in darker forms 5 spots present, the anterior ones 

 sometimes coalescing. Scutellum broadly triangular, dark. Elytra 

 broadly oblong, convex ; humeri not prominent, with only a trace of 

 intrahumeral sulcus; surface moderately shining, under high mag- 

 nification finely alutaceous, finely and moderately densely but shal- 

 lowly punctate ; sutural and submarginal vittae narrow and distinctly 

 united at apex; median vitta narrow except in dark forms. Body 

 beneath finely but not conspicuously pubescent; varying greatly in 

 extent of dark coloring; in eastern forms undersurface often nearly 

 pale, with only darker shading on metasternum, in typical western 

 form the mesosternum and metasternum, and usually the abdomen 

 except last ventral segments, entirely dark. Femora always pale, 

 tibiae and tarsi dark. Length, 5.2 to 7.8 mm ; width, 2.9 to 4 mm. 



