224 PROCEEDINGS OF THE ACADEMY OF [April, 



abdominal extremity adding to the length measurement of the present 

 insect. 



In coloration the specimen closely resembles the more brilliantly 

 colored males of rotundipennis and has the caudal femora heavily 

 twice banded with fuscous. The general coloration is orange cinna- 

 mon with dorsal surfaces of head and pronotum walnut brown. 

 The sides of the abdomen are marked with fuscous as in the males 

 of all the species of the present group. 



The type is unique. 



Melanoplus mirus 83 new species. PI. XII, fig. 13; pi. XIII, figs. 14, 15, 16. 



The present insect is a development of the M. puer type, showing a 

 very striking specialization of the male subgenital plate, which is 

 even more produced and compressed than in M. strumosus. Males 

 of the present species have, however, a very simple supra-anal plate, 

 much as in M . puer, while the pronotum, noticeably broader caudad 

 than cephalad, shows further affinity to that species and also to 

 M. rotundipennis. The entire absence of furcula is, however, found 

 elsewhere in the group only in M . stegocercus and M . scapidaris. 



Type: d 71 ; Weldon, Halifax County, North Carolina. July 24, 

 1913. (Hebard.) [Hebard Collection, Type No. 110.] 



Description of Type. — Size and form similar to moderately large 

 south Florida males of M . puer. Limbs, absence of furcula and 

 character of supra-anal plate all agreeing with M. scapidaris. Teg- 

 mina much as in M . rotundipennis. , 84 Extremity of abdomen tumid, 

 greatly produced and upcurved; supra-anal plate simple as in 

 scapularis, but with lateral margins very weakly convex and con- 

 verging evenly caudad (fig. 14), furcula absent; cerci moderately 

 broad at base, narrowing sharply to half this width mesad, thence 

 after a sharp inward flexion of the shaft expanding distad to a width 

 as great as the base, from which point narrowing, again with an even 

 curvature, to the sharp disto-ventral apex, all of the narrowing and 

 widening is due to the curvature of the dorsal margin, the ventral 

 margin is almost straight, 85 the apices of the two cerci are attingent 

 just beyond the distal extremity of the supra-anal plate (fig. 15); 

 disto-ventral abdominal segment produced mesad in a very small 

 sharp point, subgenital plate greatly produced, compressed, stela- 



83 In allusion to the remarkable genitalia of the male sex. 



84 The size, shape and degree of separation of the tegmina vary considerably 

 in the present series. 



85 In consequence the outline of the distal enlargement of the cerci bears a 

 close resemblance to the outline of a duck's head. 



