DIAPERINI NORTH OF MEXICO — TRIPLEHORN 421 



Georgia." It is a very typical specimen of P. Jlavipes, and this is a 



clear case of absolute synonymy. 



Specimens examined. — From the following localities, 548: 



United States: Alabama (Auburn, Cheaha State Park, Marion, Mobile, Selraa, 

 Tuscaloosa). Arkansas (Hope). Delaware (Fenwiek Island). District of Co- 

 lumbia. Florida (Archer, Avalon, Belleair, Biscayne Bay, Brooksville, Capron, 

 Coconut Grove, Dunedin, Edgewater, Elfcrs, Enterprise, Fruitland Park, Gaines- 

 ville, liaulover. Highlands Hammock State Park, Homestead, Kissimmee River, 

 La Belle, Lake City, Lake Worth, Miami, Monticello, Naples, Ocala, Odessa, 

 Orange Park, Ormond Beach, Palatka, Paradise Key, Pine, Punta Gorda, Royal 

 Palm State Park, Saint Augustine, Sand Point, Sanford, Sarasota, Tampa, 

 Winter Park, Dade Co., Duval Co., Citrus Co., Highlands Co., Levy Co., Marion 

 Co., Pinellas Co., Polk Co., Putnam Co.). Georgia (Adairsville, Albany, Athens, 

 Atlanta, Baconton, Billys Island, Brunswick, Buckhead, Camilla, Cartersville, 

 Clarkesville, Clyo, Dunwoody, Milledgevillc, Ochlochnee, Saint Simons Island, 

 Savannah, Stone Mountain, Swainsboro, Thomasville, Thomson, Thunderbolt, 

 Tybee Island, Warrenton). Indiana (Clark Co., Posey Co.). Kansas (Riley 

 Co.). Kentucky. Louisiana (New Orleans, Ponchatoula, Winnfield). Mary- 

 land. Massachusetts (Brookline, Cambridge, Hopkinton, Lowell, Milton, Spring- 

 field, Wilbraham). Mississippi (Avera, Leaf, Leakesville, Lucedale, New Au- 

 gusta). New Hampshire (Durham). New Jersey (Jamesburg, Lakehurst, 

 Lakewood, Riverton, Vineland). New York (Flushing, Ithaca, New York City, 

 Orient, Pinelawn, Riverhead, Yaphank). North Carolina (Asheville, Boardraan, 

 Chapel Hill, Saluda, Southern Pines, Tryon). North Dakota (Beach). Ohio 

 (Athens). Pennsylvania (Jeannette, Pittsburgh). South Carolina (Charleston, 

 Clemson College, Greenwood, Jackson). Tennessee (Deer Lodge, Elmwood). 

 Texas (Anahuac, College Station, Columbus, Dallas, Dewey ville, Flatonia, Gail, 

 Handley, Karnack, San Felipe, Victoria, Waco). Virginia (Cape Charles, Char- 

 lottesville, Falls Church, Fort Monroe, Newport News, Norfolk, Sherrydale). 



Platydema nigratuni (IMotschoulsky) 



Plate 5 (Figs. 38, 39) 



Platydema janus Horn, 1870, p. 382 (not Fabricius, 1801, p. 566) [misidentifica- 



tion]. 

 Neomida nigrata Motschoulsky, 1873, p. 478. 



Platydema 'pernigrum Casey, 1884, p. 49. — -Horn, 1885, pp. Ill, 113. 

 Platydema suhquadratum (Motschoulsky). — 'Champion, 1886, p. 188; 1893, 



p. 538. — Blaisdell, 1923, p. 277 [misidentification]. 



Description. — Subquadrate to elongate oval, feebly convex, dark 

 brown to black, dull in lustre. Head evenly arcuate in front, anterior 

 margin reddish, flattened or feebly convex between eyes, epistomal 

 suture well defined; surface finely and very densely, almost conflu- 

 ently, punctured; eyes large, convex, feebly emarginate anteriorly, 

 separated ventrally by a distance subequal to about 1.7 times the 

 longer axis of one eye; mouthparts Hght reddish brown, terminal seg- 

 ment of maxillary palpus elongate triangular; basal four and apical seg- 

 ment of antennae light reddish brown, segments 5-10 dark brown to 

 black. Pronotum twice as broad as long, sides strongly converging 



