1916.] NATURAL SCIENCES OF PHILADELPHIA. 223 



to be very scarce. From the latter region, southward on the main- 

 land of peninsular Florida. M. puer replaces the present insect. 



Melanoplus stegocercus 82 new species. PI. XII, fig. 12; pi. XIII, figs. 11, 12, 13. 



Related to M. rotundipennis, but differing very greatly in the male 

 genitalia. The female sex is unknown. 



Type : cf ; Cannoche River at Groveland, Bryan County, Georgia. 

 July 28, 1913. (J. C. Bradley.) [Acad. Nat, Sci. Phila., Type 

 No. 5273.] 



Description of Type, — Size and form similar to M . scapularis, but 

 somewhat heavier; cephalic and median femora somewhat swollen 

 as in M. rotundipennis, and with dorsum of pronotum having the 

 lateral carinse weakly and regularly diverging caudad as in that 

 species. Tegmina similar to those of scapularis, but not attingent 

 (least width between same 1 mm.). Extremity of abdomen broadly 

 and decidedly produced, tumid, but not at all upcurved; supra-anal 

 plate much as in scapularis, but with angles of lateral margins less 

 distal, furcula likewise absent (fig. 11); cerci broad at base, thence 

 expanding evenly to the truncate distal margin, dorsal margin weakly 

 arcuate to the scarcely evident disto-dorsal angle, ventral margin 

 straight to the sharply rounded subrectangulate disto-ventral angle, 

 the cereal shafts regularly flexed so that the disto-dorsal portion of 

 the cerci is horizontal (though its surface is swollen and uneven), 

 and the margins of the same when in normal position overlap in this 

 plane dorsad of the distal portion of the supra-anal plate (pi. XIII, fig. 

 12) ; disto-ventral abdominal segment with caudal margin very weakly 

 produced mesad, subgenital plate roundly and rather broadly pro- 

 duced (length 2 mm.), with proximal lateral portions of plate and 

 adjacent portion of preceding segment subcompressed, extending 

 beyond the apex of the supra-anal plate one-half the length of the 

 same (fig. 13). The soft integument between the supra-anal and 

 subgenital plates is almost wholly covered by the distal portions of 

 the cerci and does not rise above the dorsal margin of the subgenital 



plate. 



Measurements {in millimeters) of type. 



Length of body 17.5 Greatest width of tegmen 2.4 



Length of pronotum 3.9 Length of caudal femur 11.1 



Length of tegmen 3.1 Greatest width of caudal femur .. 3.1 



The specimen is larger than the type of scapularis, but not as much 

 so as the bod}' length would lead one to believe, the uncurved 



52 From ariyu, to cover closely, and Kep/coc; cercus. In allusion to the remark- 

 able cerci, which cover closely the caudal portion of the supra-anal plate. 



