1907.] NATURAL SCIENCES OF PHILADELPHIA. QS- 



tlie author may be separated by the following key," which is based 

 in part on that given by Brimner. 



1. — Tegmina and wings distinctly shorter than the body, 



carita Scudder. 



1.1. — Tegmina and wings very much longer than the body. (i-i 



2. — Tympanal field of the male tegmen roundly produced. 



Cephalic and median femora with the dorsal apex dentate. 



3. — Radial vein with three or four rami. Size small, 



gracilipes (Thomas). 

 3.3. — Radial vein with five or six rami. Size large, 



jphalangium (Scudder). 



2.2. — Tympanal field of the male tegmen angularly produced at 



the transverse vein. Cephalic and median femora with 



the dorsal apex obtuse. 



3. — Tympanal field of the male tegmen but little expanded, 



the margin being moderately bisinuate. Pronotum 



moderately sellate. Cerci with the tips strongly 



recurved dorsad, constricta Brunner. 



3.3. — Tympanal field of the male tegmen moderately ex- 

 panded, the margin being strongly bisinuate. Pro- 

 ' notum strongly sellate. Cerci with a very slight 

 dorsal inclination at the tips, . . . sellata Rehn. 



Scudderia mexicana (Saussure). 



Carr Canyon, Huachuca Mountains, September 27, October 8, 16-17, 

 1905 (Biederman), 2 c?,4 ?. 



The species has previously been recorded from this region by CaudelL 



Scudderia furcifera Scudder. 



Carr Canyon, Huachuca ^Mountains, August (Skinner), 1 d^, 2 ? . 

 September 24, October 3, 8 and 20, 1905 (Biederman), 3 d^, 6 ? - 

 Palmerlee, July 26, 1905 (Schaeffer), 1 ? . 



In the United States, Scudder recorded this species from Prescott, 

 Arizona, and Scudder and Cockerell from the Organ Mountains, New 

 Mexico. 



Microcentrum laurifolium (Linnaeus). 



Carr Canyon, Huachuca Mountains, October 2, 3 and 8, 1905 (Bie- 

 derman), 3 9 . 



One of these specimens belongs to the variety b mentioned by Saus- 

 sure and Zehntner. 



^- "id. brevicauda (Scudder) is not included as it is unkno'ft'n to the author, and 

 its relationship is probably with carita. The same author's .1. consuetipes has 

 not been seen, and from the description would appear to have a unique position on 

 account of its short legs. 



