176 NORTH AMERICAN MELANOPLI (ORTHOPTERA) 



divergent (varying in paratypes to very feebly divergent) projections, 

 over twice as long (shorter in one paratype) as the width of one of them 

 just beyond the thickened areas from which they spring. Supra-anal plate 

 shield-shaped, median and lateral processes longitudinally concave, the 

 former with concavity broader and weaker distad, transverse carinae absent ; 

 lateral margins moderately thickened (this stronger in one paratype) for 

 some distance opposite cereal bases. Cercus with length approximately 

 twice proximal width, curved feebly dorsad; dorsal and ventral margins 

 weakly convergent proximad, nearly parallel mesad, converging and round- 

 ing into the truncate distal margin, external surface definitely (to not at 

 all) impressed distad. 7 Penis with ventral lobes 8 prominent, their caudal 

 margins moderately oblique convergent, then vertical to base and briefly 

 separated; parameres acute, projecting over half distance to apices of 

 dorsal lobes; the latter with portions projecting dorsad very small and 

 rounded. 9 Subgenital plate produced in a broad blunt rounded apex 

 which occasionally shows a small median impression. 



Allotype. — 9 ; same data as type. [Hebard Collection] . 



Very similar to male but larger and more robust. Vertex broader with 

 impression weaker. Tegmina broader but separated by a greater interspace. 

 Prosternal spine shorter, broader and decidedly heavier. Ovipositor apices 

 of medium length and moderately curved, dorsal surface of dorsal valves 

 weakly nodose proximad, the lateral margins acute, the external subcre- 

 nulate but very feebly and bluntly toothed proximad. 



The measurements of the extremes are given in a series of eight male and 

 fourteen female paratypes bearing the same data as the type and one female 

 paratype from the same locality taken August 11, 1931, by M. W. Sander- 

 son, belonging to the University of Kansas. Length of body S 18. to 

 19.3, $ 22. to 23.7; length of pronotum $ 4.7 to 4.9, $ 5. to 5.6; caudal 

 width of pronotal disk $ 2.8 to 2.9, $ 3.5 to 3.8; length of tegmen $ 3.7 to 

 45, $ 4.5 to 4.8, length of caudal femur $ 9.8 to 10., $ 11.1 to 12. mm. 



Generally dark brown, the paler brown recessive individuals with color 

 pattern weaker. A broad darker postocular band extends to the principal 

 sulcus on the pronotal lateral lobes. Face, ventral portion of pronotal 



7 In indigens indigens the male cercus is spatulate distad, definitely 

 broader than the median section, the ventral margin rounding more sharply 

 into the distal than does the dorsal margin, the external surface more 

 generally flattened. 



8 In the last paper of this series, Trans. Amer. Ent. Soc, lx, p. 339, 

 (1935), the ventral lobes were termed " the base of the penis and the lateral 

 margins of the shaft ", the dorsal lobes " the surmounting pair of processes 

 or the dorsal processes " and the parameres " the median processes " or the 

 dorsal lobes and parameres " the two pair of dorsal processes ". 



9 In indigens indigens the dorsal lobes of the penis are decidedly larger, 

 with lateral surfaces flattened and dorsal outline rounded-angulate in 

 lateral aspect, see plate XIII, figure 3. 



