1912.] NATURAL SCIENCES OF PHILADELPHIA. 267 



The males of the two species may be separated by the following 

 characters : 



.4. sphenarioides. A. clara. 



Antennae shorter. Antenna? longer. 



Furcula narrow, digitiform, tips Furcula broad depressed lobes, 

 variable in production. hardly produced. 



Supra-anal plate narrow, lateral Supra-anal plate broad, lateral 

 margins in large part straight margins arcuate, not subparal- 

 and subparallel. lei. 



Cerci short, simple, styliform. Cerci elongate, acute falcate 



distad. 



The form of the cerci of the males varies somewhat in the present 

 series, although in all cases the general outline remains the same. 

 The variation lies entirely in the width of the cercus, the degree of 

 falcation of the distal portion and the presence or absence of a very 

 broad, blunt angulation at the distal third of the dorsal margin. 

 The Cape Florida specimens previously recorded and measured by 

 us, 41 in the male sex surpass in size any individuals of that sex in the 

 present series, although in the female they are equalled by Miami, 

 Homestead, Boot Key, and Key West representatives. 



The range of this beautiful species is now known to extend north 

 to Tampa, south on the mainland at least as far as Homestead and 

 over the Keys to Key West. We have no knowledge of the limit of 

 its range along the east coast of Florida. Scudder's records of 

 Aptenopedes sphenarioides from Key West and Biscayne Bay 42 are 

 erroneous references of female individuals of this form 43 to the more 

 northern species. 



On the Keys this species was found in very scant numbers, usually 

 on the edge of the scrub where the low undergrowth was unusually 

 heavy, while on the mainland the specimens were taken in low spots 

 in the pine woods and once or twice were beaten from the marsh 

 grasses growing on arms of the everglades. 



Aptenopedes aptera Sc. 



Miami, Fla., March 20-28, 1910; 2 tf, 2 9 . 

 Homestead, Fla., March 17-19, 1910; 1 &. 



"Ibid., p. 41. 



« Proc. U. S. N. M., Vol. XX, p. 400, 1897. 



43 We have before us, ex Cln. Bruner, a Biscayne Bay female examined by 

 Scudder and labelled sphenarioides by him when studying the genus for his 

 Melanopli revision. This specimen is of course clara. Doubtless he would have 

 separated the species if he had had the more easily recognized male. 



