240 BRAZILIAN ORTHOPTERA 



SCHISTOPELTIS20 new genus 



Related to Tribonium Saussure, from which, as well as all other 

 genera of the family, it can be immediately separated by the bifis- 

 sate cephalic margin of the pronotum. The genus Schi^opilia 

 Saussure, which also has a bifissate pronotum, can be readily 

 distinguished by the incisions in the older genus being laterad 

 and not cephalad in position and direction. 



Generic Characters. — Form depressed. Head visible cephalad 

 of the pronotum, with interspace between eyes broad. Prono- 

 tum transverse, caudal margin truncate, cephalic section deeply 

 fissured on each side of the supra-cephalic portion of the disk, the 

 fissures being arcuate, truncate at their caudal extremity and 

 separating from the disk the wing-like lateral sections of the 

 pronotum. Tegmina complete, venation prominent; marginal 

 field broad. Wings complete; ulnar vein with complete and in- 

 complete rami. Femora with no genicular spines, ventral mar- 

 gins unspined; tarsi with large arolia. 



Genotype. — Schistoveltis peculiaris new species. 



Schistopeltis peculiaris new species (Plate XIV, figs. 16 and 17. 



Type. — cf ; Porto Velho, Rio Madeira, Brazil. (Stanford 

 Expedition; Mann and Baker.) [Acad. Nat. Sci. Phila., Type 

 no. 5244.] 



Size medium; surface of body moderately shining. Head strongly de- 

 pressed, broad, face decidedly deplanate; occipital outline subtruncate, inter- 

 space between eyes broad, nearly three times as great as the depth of the eyes, 

 antennal scrobes much more distant than the eyes and situated deeply in the 

 concavity of the ventral margin of the eyes; ocellar spots large; eyes very 

 narrow, elongate reniform, greatly narrowed mesad; clypeus and labrum 

 relatively small, transverse subrectangulate ; palpi short, third joint subequal 

 in length to the fifth and distinctly shorter than the fourth joint, fourth joint 

 conical, fifth joint thick, somewhat inflated, in lateral outline sub-lanceolate; 

 antennae nearly as long as the body, articles moniliform with the exception of 

 the first and third, the former being thickened and longer than the second and 

 third together, the third twice as long as the second. Pronotum with its 

 length contained slightly more than one and two-thirds times in the greatest 

 width, lateral sections depressed: cephalic margin of the disk arcuato-truncate 

 mesad and rounding to the fissures laterad, the medio-cephalic section of the 

 disk but little surpassing the head in width, fissures relatively broad, somewhat 

 converging caudad, where they are abruptly truncate; cephalic margins of the 

 lateral "wings" arcuate divergent, the cephalic angle of these sections, i. e. at 

 the fissures, rect-acute; lateral angle of the pronotum obtuse, decided, faintly 



^^ l^X'-'rTos cloven, weXTri Hhicld. 



