566 PROCEEDINOff OF THE NATIONAL MVSEVM. vol. 4C. 



emarginate below. Antennae rather long, terete, II much longer 

 than I. Pronotum tricarinate, laterals extending outward behind 

 eyes, not reaching hind margin; scutellum 5-carinate, carinse not 

 prominent. Legs large, long; hind tibiae with three lateral spines; 

 calcar terete, spiniform, acute at tip; hind tarsi long. Elytra reach- 

 ing at least to tip of abdomen. Male genital segment elongate; geni- 

 tal styles peculiarly ventral instead of terminal, as in most genera; 

 anal style in both sexes very elongate. 



Ty'pe of genus — Pentagramma vittatifrons Uliler. 



This genus differs markedly from the others of the subfamily in 

 regard to the male genital characters. In the other genera the tip 

 of the abdomen is broadly truncate vertically with the genital styles 

 and other organs sub vertical; in this genus the abdomen is not 

 truncate but converges to the anal tube in a straight line, with the 

 genital styles inferior and directed backward instead of upward. 



PENTAGRAMMA BIVITTATA, new species. 

 Plate 44, figs. L, M, O. 



Length of body, female 6.8 mm.; male 5.6; width of vertex between 

 eyes 0.53; greatest width of frons 0.69; length of antennae, I, 0.28; 

 II, 0.55. General color green; frons greenish brown, with a hght 

 green band across clypeal margin and another arcuately across 

 middle; inner face of forecoxse and mesopleurae with a black spot; a 

 small brownish area sometimes present between antennae and frons; 

 antennae and legs lineated with black. 



Head very broad, sUghtly broader than prothorax; vertex very 

 slightly longer than broad, produced shghtly beyond eyes, rather 

 straight in front, tumid; frons about one and a third times as long 

 as broad, convex; median carinae moderately prominent, not sharp, 

 indistinct at apex of head, parallel with sides, a little broader at 

 apical margin than at base. Eyes large, long, scarcely emarginate 

 beneath but facets wanting on corresponding area. Antennae terete, 

 slightly pilose, I more than one-tliird as long as 11. 



Thorax very large, broad; pronotum rather deeply and angularly 

 emarginate behind, straight in front, lateral carinae not prominent; 

 scuttellar carinas indistinct; tegulae large, prominent. Legs long, 

 large; tibial spines large, black; calcar long, acute. Elytra reaching 

 slightly beyond tip of abdomen, especially in female, subhyaUne, not 

 maculated; outer cubital not forked at apex. 



Abdomen long in both sexes, tapering uniformly to apex. 



Male pygofers long, converging evenly to tip; anal tube long, 

 open beneath; anal style long, acute; genital styles simple, stout, 

 large at base, not very acute at apex, arched. 



Described from 7 males and 18 females from Managua, Nicaragua 

 (Baker). This species is closely allied to the more northern vittati- 



