NO. 1124. R E 7ISION OF THE MELA NOPLISC UDDER. HI 



walls; furcula consisting of a pair of parallel or feebly divergent, flat- 

 tened, slender, tapering, bluntly acuminate fingers nearly half as long 

 as the supraanal plate; cerci subequal compressed laminae, a little more 

 than twice as long as broad, nearly straight but feebly arcuate and 

 feebly incurved, not so long as the supraaual plate, well rounded 

 apically, sometimes feebly dimpled apically on the exterior surface; 

 subgenital plate of equal length and breadth, broadly subconical, the 

 apical margin slightly elevated and subtuberculate. 



Length of body, male, 17 mm., female, 24 mm.; antennae, male, 

 6.75 mm., female, 6.25 mm.; tegmina, male, 4.75 mm., female, 5 mm.; 

 hind femora, male, 10 mm., female, 11.75 mm. 



Fourteen males, 21 females. Idaho (U.S.N.M. Eiley collection); 

 Henry Lake, Idaho, August (same; L. Bruner); Yellowstone, Mon- 

 tana (TJ.S.N.M. Eiley collection); Fort McLeod, Alberta, August 

 (same; L. Bruner.) It was originally described by Thomas from 

 Oregon. 



Thomas's text refers to an illustration on a plate, but another species 

 was there substituted for it. His types do not appear to exist, but I 

 think there can be little doubt that this is his species, his description 

 agreeing exceptionally well and certainly applying to no other insect I 

 have seen. I am also drawn to this conclusion by notes taken many 

 years ago upon examination of his types. 



ANALYTICAL KEY TO THE OLD WORLD SPECIES OF PODISMA. 



A 1 . Subgenital plate of male normal, as seen from above at least as long as broad, 

 apically narrowing (Podisma, s. s.). 

 b l . Tegmina absent. 



c l . Sides of first abdominal segment with no distinct tympanum. 

 d l . Disk of pronotuui smooth, at least on prozona. 



e l . Hind tibiae red; lobes of male furcula very distant; cerci very short, 

 styliform, acuminate; subgenital plate not prolonged beyond its apical 



margin 9. pedemontana (p. 112). 



e 2 . Hind tibiae lutescent; lobes of male furcula attingent; cerci moder- 

 ately long, subcompressed, slightly dilated apically; subgenital plate pro- 

 longed as a tubercle beyond its apical margin 10. cobellii (p. 113). 



d 2 . Disk of pronotum rugulose throughout. 



e } . Hind femora pallid beneath ; hind tibiae rufeecent.. . 11. costae (p. 113). 



c 2 . Hind femora red or reddish beneath; hind tibiae sordid blue. 



/*. Pronotum of female enlarging but little posteriorly; lobes of male 



furcula stout though small, rounded; subgenital plate as broad as long, 



the apical margin broadly rounded, with a feeble, indistinct, and blunt 



tubercle 12. parnassica (p. 113). 



/ 2 . Pronotum of female enlarging posteriorly rapidly and considerably; 

 lobes of male furcula slight and minute, elongate; subgenital plate much 

 longer than broad, the apical margin angulate, with a small but dis- 

 tinct and slightly elevated tubercle 13. pyrenaea (p. 114). 



c 2 . Sides of first abdominal segment with a distinct tympanum. 



d l . Hind tibiae flavo-olivaceous ; lateral halves of last dorsal segment of male 

 widely separated ; cerci tapering almost regularly throughout, equal for a short 

 distance beyond the middle; subgenital plate elongate, its apical margin sub- 

 angulate as seen from above 14. salamandra (p. 114). 



