PARAIDEMONA.— CAMPYLACANTHA. 313 



Hab. Noeth America 1 ~ 6 , Dimit Co., Texas (coll. L. Bruner). 



This insect certainly occurs across the Rio Grande in Mexican Territory, since the 

 next species is common at Tampico, Tamaulipas. 



2. Paraidemona mimica, Scudd. (Tab. IV. figg. 20, 20 «, 5, s .) 



Paraidemona mimica, Scudd. Proc. U.S. Nat. Mus. xx. p. 43, t. 3. fig. 10 (1897) 1 ; Caudell, 

 op. cit. xxvi. p. 798 (1903) 2 . 



Hab. North America, Texas 1 2 . — Mexico, Tampico (coll. III. St. Lab. Nat. Hist.). 



AIDEMONA, Brunner. 

 Pezotettix, in part. 



Aidemona, Brunner, Rev. Syst. Orthopt. p. 145 (1893) ; Scudder, Proc. Amer. Acad. Art. Sci. xxxii. 



no. 9, p. 198 (1897) ; Proc. U.S. Nat. Mus. xx. pp. 10, 44 (1897). 



This is one of the most widely distributed of the several Mexican genera belonging 

 to the group " Melanopli." It occurs from South-western Texas to Costa Rica, and 

 perhaps even enters South America. Whether only a single variable species occurs 

 over this wide area, or several distinct forms represent the genus, I am not prepared 

 at present to state. There is, however, considerable variation noticeable among the 

 individuals coming from different localities. The genus is reported by nearly every 

 writer on Mexican and Central-American Acridiidae. 



l. Aidemona azteca, Sauss. 



Platyphyma aztecum, Sauss. Rev. et Mag. Zool. (2) xiii. p. 161 (1861) 1 ; Orthopt. Nov. Amer. 



ii. p. 12 (1861) 2 ; Walk. Cat. Derm. Salt. Brit. Mus. iv. p. 716 (1870) 3 ; Thomas, Rep, U.S. 



Geol. Surv. Terr. v. p. 223 (1873) \ 

 Pezotettix aztecus, Stal, Bihang till K. Svensk. Vet.-Akad. Handl. v. no. 9, p. 10 (1878) 6 . 

 Aidemona azteca, Brunner, Rev. Syst. Orthopt. p. 145 (1893) 6 ; Baker, Invert. Pacif. i. p. 76 



(1905) 7 ; Scudd. Proc. U.S. Nat. Mus. xx. p. 45 (1897) 8 . 



Hab. Mexico 1_6 , San Luis Potosi, Aguas Calientes, Vera Cruz, Tehuan tepee, &c. 7 ; 

 Nicaragua, Realejo 8 , Chinandega and San Marcos 7 ; Costa Eica (coll. L. Bruner). 



There are many Mexican and Central- American localities represented by the 

 material at hand. 



CAMPYLACANTHA, Scudder. 



Hypochlora, Brunner, Rev. Syst. Orthopt. p. 145 (1893) (in part.). 



Campylacantha, Scudd. Proc. Amer. Acad. Art. Sci. xxxii. no. 9, p. 198 (1897); Proc. U.S. Nat. 

 Mus. xx. pp. 10, 48 (1897). 



The present genus is more northerly in its distribution than several of those recorded 

 on the preceding pages. Still, one of its representatives enters Mexican territory 

 several hundreds of miles. The various species have been tabulated by Scudder (loc. cit.). 



biol. centr.-ameb., Orthopt., Voi. II., September 1908. 2 Ss 



