226 PROCEEDINGS OF THE ACADEMY OF [April, 



Melanoplus scapularis 86 new species. PI. XII, fig. 14; pi. XIII, figs. 17, 18. 



Closely related to M. rotundipennis, but differing very greatly in 

 the male genitalia. Females of the two species are very similar, but 

 those of the present insect are separable by the more nearly attingent 

 tegmina, which are also more ample and more nearly rotundate. 



Type: c? ; Jesup, Wayne County, Georgia. September 1, 1911. 

 (Rehn & Hebard.) [Hebard Collection, Type No. 111.] 



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

 but somewhat more compact; cephalic and median femora less 

 swollen, the caudal femora slightly shorter and a little deeper in 

 proportion to their length. Tegmina abbreviate, rotundate, but 

 very little longer than broad, attingent. The tegminal length much 

 more nearly approximates the breadth of the same than in rotundi- 

 pennis. Extremity of abdomen tumid, strongly upcurved; supra- 

 anal plate decidedly longer than in rotundipennis, but otherwise 

 similar (fig. 17), furcula absent; cerci broad at base, distal portion 

 broadly expanding into a lamellate plate resembling a scapula, 

 greatest width at distal extremity hardly greater than length of 

 cercus, dorso-distal angle rotundato-rectangulate, disto-ventral angle 

 acute angulate, distal margin obtusely emarginate (fig. 18). The soft 

 integument between the supra-anal and subgenital plates does not 

 rise above the dorsal margin of the latter plate in the present insect. 87 



Allotype: 9 ; Same data as the type. [Hebard Collection.] 



Description of Allotype. — Very similar to females of M. rotundipen- 

 nis, but may be separated by the tegminal characters given above. 

 (All of the females before us have the tegmina either attingent or 

 separated by the scantiest interspace, the extreme separation being- 

 shown by a female from Isle of Hope in which the least width 

 between the tegmina is .3 mm.) In structure scapularis is a little 

 more compact with shorter and heavier caudal femora. 



Measurements (in millimeters) . 



■ ? 9 9 



Type. Paratypes. Allotype. Paratypes. 



Length of body 15 16-16.7 22.2 19.7-21 



Length of pronotum 3.9 3.8-3.9 5.1 4.8-4.9 



Length of tegmen 3 3-3.2 4.2 3.8-3.9 



Greatest width of same 2.4 2.2-2.6 3.1 2.9-3.1 



Length of caudal femur 10 9.7-10.2 12.5 11.6-11.9 



Greatest width of same 2.9 2.7-2.9 3.7 3-3.2 



86 In allusion to the scapuliform cerci. 



87 In M. rotundipennis this integument is produced upward in an acute pro- 

 tuberance, which rises conspicuously above the distal margin of the subgenital 

 plate. 



