DIAPERINI NORTH OF MEXICO — TRIPLEHORN 425 



Specimens examined. — From the following localities, 297: 



United States: Alabama (Auburn, Mobile). Arizona (Arivaca, Catalina 

 Springs, Cibola, Fort Yuma, Galim-o Mts., Globe, Huachuca Mts., Nogales, 

 Phoenix, Sabino Canyon, Santa Catalina Mts., Superstition Mts., Tucson, 

 Willcox). California (Needles, San Diego, San Jose Island, Yuma). Florida 

 (Capron, Bartow, Brooksville, Dunedin, Enterprise, Gainesville, Highlands 

 Hammock State Park, Homestead, Key Largo, Key West, Lake Harney, Lake 

 Worth, Naples, Punta Gorda, Royal Palm Park, Saint Lucie, Sanford, Sara- 

 sota). Georgia (Brunswick). Indiana (Marion Co.). Kansas (Benedict). 

 Louisiana. Mississippi (Lucedale). New Mexico (Albuquerque). North 

 Carolina. South CaroHna. Texas (Brownsville, Devils River, Montell, New 

 Braunfels, San Diego, Victoria, Hidalgo Co.). 



Cuba: Cienfuegos, Baraguti. 



Lower California: Cape San Lucas, Comondu, El Triunfo, Las Animas Sierra 

 Laguna, San Bartolo. 



Mexico: Acahuizlotla, Acaponeta, Agua Marina near Alamos, Ciudad del 

 Maiz, Ciudad Obregon, Cuernavaca, Eldorado, Jicaltepec, Minatitldn, Mount 

 Colima, Santa Rosa, Tamazunchale, Tampico, Tepic. 



British Honduras: Manatee District, Rio Hondo. 



Honduras: Roatdn Island. 



Nicaragua. 



Costa Rica: La Caja near San Jos6. 



Platydema erythrocerum Laporte and Brulle 



Plate 5 (Figs. 43, 44) 



Platydema erythrocera Laporte and BruUe, 1831, p. 355. 

 Platydema erythrocerum Laporte and Brulle. — Horn, 1870, p. 382. 

 Neomida flavicornis Motschoulsky, 1873, p. 479 [new synonymy]. 



Description. — Elongate oval, rather strongly convex, light red- 

 dish brown to almost black, sometimes with pm-plish caste. Head 

 narrowly rounded in front, epistomal suture well defined, clypeus 

 convex and distinct; surface minutely and obscurely punctulate; 

 males with two thick, very blunt, parallel, forward projecting horns 

 on frons immediately between eyes, a deep abruptly defined impres- 

 sion between them ; females with short, very blunt tubercles on frons, 

 a shallow impression between them; eyes large, convex, separated 

 ventraUy by a distance subequal to the longer axis of one eye ; mouth- 

 parts pale yellowish or reddish, terminal segment of maxillary palpus 

 moderately short, rather narrowly triangular; basal four or five 

 antennal segments pale yellowish, the remaining segments dark brown 

 except apical one which is frequently all or in part paler in color. Pro- 

 notum slightly more than twice as broad as long, sides feebly and 

 evenly arcuate from base to apex, marginal bead very fine, feebly 

 reflected, basal angles obtusely rounded, apical angles broadly 

 rounded; surface indistinctly pimctate, punctures minute and widely 

 spaced. Elytra with sides nearly parallel to feebly arcuate, striae 

 shallowly or not at all impressed, punctm-es deep, moderately coarse 



