128 U.S. NATIONAL MUSEUM BULLETIN 261 



absent. Ground color of crown, pronotum and scutellum yellow, with 

 an irregular median coronal marking, several dark submarginal 

 markings on pronotum near anterior margin, transverse sulcus and 

 a lateral extension on each side of scutellum, black; forewings maroon 

 (specimen somewhat teneral) ; face as in /I. bakeri, new species. 



This species diflfers from all other species of Acrocampsa in having 

 three pairs of apical aedeagal processes and in having paired basal 

 aedeagal processes. 



Holotype male, Pernambuco, Brazil, P. R. Uhler collection (USNM). 



26. PARACROCAMPSA, new genus 

 Figures 121-124 



Type-species: Amhiydisca amida Distant. 



Length 11-13.5 mm. 



Head moderately produced, median length less than interocular 

 width, anterior margin elevated and carinate, ocelli located on a line 

 between anterior angles of eyes, each about equidistant between 

 adjacent eye angle and median line, usually with an M -shaped eleva- 

 tion bordering posterior margin, with a shallow median fovea which is 

 broadened apically, without a longitudinal carina laterad of each 

 ocellus, surface of crown with fine pubescence; antennal ledges with 

 or without a longitudinal fovea, carinate dorsally or not in lateral aspect, 

 anterior margins steeply declivous; clypeus depressed medially, muscle 

 impressions distinct; face finely pubescent below; clypellus subangulate 

 in lateral aspect, its lower portion almost at right angle to profile of 

 clypeus, not laterally compressed. 



Thorax with pronotal width equal to or slightly greater than trans- 

 ocular width of head, lateral margins usually parallel, with posterior 

 portion of disc rugose or rugose and punctate, posterior margin concave, 

 usually with dorsopleural carinae complete and curved ventrally at 

 midlength; scutellum transversely striate on posterior portion. Fore- 

 wings usually with a membrane which includes all of apical cells, veins 

 usually distinct and slightly elevated, clavus and corium coriaceous, 

 the clavus usually and adjoining brachial cell occasionally punctate, 

 with four apical cells, the relative positions of bases of third and fourth 

 apical cells variable, without an anteapical discal plexus of veins on 

 corium, with or without anteapical supernumerary veins to costal 

 margin, wings of female at rest concealing ovipositor. Hind wing ex- 

 tending almost as far posteriorly as forewing; vein R2-1-3 incomplete. 

 Hindlegs with femoral setal formula 2 : 1 : 0, or rarely 2:1:1; first tarso- 

 mere with length less than combined length of second and third. 



Male genitalia: Pygofer moderately produced and rounded or with 

 an apical process, with a few dispersed microsetae located along postero- 



