Biological Papers. 161 



IV. -LIST OF ORTHOPTERA. 

 The author hereby expresses his grateful acknowledgments to 

 Mr. J. A. G. Rehn, of the Philadelphia Academy of Natural Sciences, 

 for the determination of a large portion of the material in this 

 order of insects. This list includes all the Arizona species collected 

 by the expeditions of 1902, 1903, 1904, 1905, and 1906. 



Family FORPICULID^. 

 Apterygida linearis Esch. San Bernardino ranch. 



Family Blattid^. 

 Pseudomops oblongata Linn. San Bernardino ranch. 

 Stylopyga orientalis Linn. San Bernardino ranch. 

 Homoeogamia boUiana Sauss. Oak creek canyon, Baboquivari mountains. 



erratica Rehn. New species. San Bernardino ranch, Babo- 

 quivari mountains. 



Family Mantid.e. 

 Litaneutria minor Scudd. San Bernardino ranch, Baboquivari mountains, 



Bill Williams fork, Cactus plain. 

 Vates paracusis Sauss. Baboquivari mountains. 

 Stagmomantis limbata Hahn. Bill Williams fork, San Bernardino ranch. 



gracilipes Rehn. New species. Baboquivari mountains. 



Family Phasmid.e. 

 Diapheromera arizonensis Gaud San Bernardino ranch. 

 Pseudosermyle truncata Gaud. San Bernardino ranch. 



Family Acridhd^. 

 Tettix granulatus Kirb, Oak Greek canyon. 

 Clypeotettix schochii Bol, Baboquivari mountains. 



Paratettix toltecus Sauss. Oak Greek canyon. Bill Williams fork, San Ber- 

 nardino ranch, Tucson, 

 toltecus Sauss, race arizonus Hanc. San Bernardino ranch. Bill 



Williams fork, Tucson, 

 toltecus Sauss, form sonorensis Hanc. Oak Creek canyon. Bill 

 Williams fork, Tucson. 

 Telmatettix aztecus Sauss. Bill Williams fork, Baboquivari mountains, 



Tucson. 

 Achurum acridodes Stal. Baboquivari mountains. 

 Mermiria bivittata Serv. San Bernardino ranch. 



neomexicana Thom. Baboquivari mountains, 

 texana Brun. Oak Creek canyon. 



admirabilis Uhl. San Bernardino ranch, Baboquivari mountains. 

 Syrbula fuscovittata Thom. San Bernardino ranch, Baboquivari mountains. 

 Acrocara maculipennis Scudd. San Bernardino ranch. 

 Eritettix variabilis Brun. San Bernardino ranch. 

 Bootettix argentatus Brun. Bill Williams fork. 



Amphitornus ornatus McNeill. Oak Greek canyon, Baboquivari mountains. 

 Opeia testacea Scudd. San Bernardino ranch. 

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