30 PROCEEDINGS OF THE ACADEMY OP [Feb., 



disposition of the cereal teeth instead of a digitiform arrangement as in 

 tridens, in addition to which the size is slightly less. The females of 

 the two species are very similar, but truncata has the limbs longer and 

 the carinee of the abdomen more distinct. 



This species has previously been recorded from Dos Cabezos, Cochise 

 Co. (type locality), and Bright Angel, Coconino Co., Arizona, as well as 

 Los Angeles Co., California. 



DIAPHEROMERA Gray. 

 Diaplieroniera arizonensis Caudell. 



San Bernardino Ranch, 3,750 feet, August (F. H. Snow), 1 6^. 



This specimen has fully retained its natural coloration, which appears 

 worthy of description. 



General color cadmium yellow, a broad dorsal line covering practic- 

 ally all of the metanotum and all of the mesonotum except the caudal 

 seventh parrot green, the abdomen with the proximal half of all seg- 

 ments except the distal one green, ranging from parrot green on the 

 proximal four to oil green on the others ; terminal segment and cerci 

 tawny ochraceous. Pronotum with a slight median touch of gi-eenish. 

 Head with a slight clay-colored bar caudad of the eyes; antennae 

 vinaceous-rufous. Venter of the mesothorax and metathorax marked 

 with green as on the dorsum, and bearing a fine median longitudinal 

 line of blackish coextensive longitudinally with the green. Limbs 

 with each joint greenish (apple green) proximad, chrome yellow distad, 

 tarsi raw sienna, femoral spines blackish-brown. 



The Mexican D. calcarata is closely related to this form, but differs 

 in the much more swollen median and caudal femora of the male. 



This species has previously been recorded only from the type locality. 

 Hot Springs, Yavapai Co., Arizona. 



PARABACILLUS Caudell. 

 Parabacillus coloradus (Scudder). 



Carr Canyon, Huachuca Mountains, August, 1905 (Skinner), 1 9 . 

 September and October, 1905 (Biederman), 1 c?, 1 ? . Huachuca 

 Mountains (Schaeffer), 1 d'. 



The male has a distinct dorsal longitudinal stripe of brownish on a 

 light yellow ground. 



The Mexican P. palmeri (Caudell) is extremely close to this species. 



AORIDID^. 

 PARATETTIX Bolivar. 

 Paratettix toltecus (Saussure). 



Carr Canyon, Huachuca Mountains, August, 1905 (Skinner), 2 9 . 

 Huachuca Mountains (Schaeffer), 2 cJ^, 2 9 . 



