406 PROCEEDINGS OF THE NATIONAL MUSEUM. YOL.XX. 



8. Caloptenus scriptus Walker, Cat. Derm. Salt. Brit. Mus., IV (1870), pp. 680-681. The only form to 

 which. I was inclined to refer this was that described here as ^lelanoplus bilitiiratus, but from Mr. Hen- 

 shaw's examination of the types (see that species, p. 176) it can not be that, and I therefore find it at 

 present indeterminable. I have specimens from Vancouver, the origin of Walker's species, which may 

 possibly be referred to scriptus, since they differ from Melanoplus bilituratus in the points specified by 

 Mr. Henshaw, but as I possess only females I do not feel satisfied of their specific validity. 



9. Caloptenus selectus Walker, Cat. Derm. Salt. Brit. Mus., IV (1870), p. 682. Walker's types (from 

 Oajaca, Mexico) were examined at my request by Mr. Henshaw to see whether they belong in the 

 group Melanopli at all, and he states that they do. It is quite impossible by Walker's description 

 even to guess to what genus it belongs, much less to determine the species without a direct compari- 

 son with the types. I know of no species with a broad, interrupted, piceous stripe along the costa of 

 the tegmina. 



10. Pedies virescens Saussure, Rev. Mag. Zool., 1861, pp. 157-158. Mexico. I have not been able to 

 determine this species among my material, and question very much whether it belongs in the Melan- 

 opli. I am more inclined to think it allied to Dactylotum. 



11. Podisma viridis Blanchard, Gay, Faun. Chil., Zool., VI (1851), pp. 75, 76. Chile. This is not one 

 of the Melanopli, but belongs to Antandrus Stal. 



Several other species have not been definitely determined, but have been placed in the synonymy of 

 the described species with a mark of doubt. Such are Caloptenus arcticus Walker, Locusta leitcostoma 

 Kirby, Pezotettix longicornis Saussure, P. sumichrasti Saussure, and P. zimmermanni Saussure, for 

 which see the last preceding list (Appendix 1). 



3. LIST OF SOUTH AMERICAN MELANOPLI. 1 



1. Atrachelacris unicolor Giglio Tos, Boll. Mus. Tor., IX, Ort. Viagg. Borelli, 1894, p. 21. Argentine 

 Republic, Paraguay. 



2. Dichroplus amoenus [Pezotettix amoenus Stal, Bih. K. Sv. Vet.-Akad. Handl., V, No. 9 (1878), 

 p. 8.] (Locality?) 



3. Dichroplus arrogans [Acridium (Podisma) arrogans Stal, Eug. Resa, Orth., 1860, p. 333 ; Pezotettix 

 (Dichroplus) arrogans Stal, Rec. Orth., I (1873), p. 78; Pezotettix arrogans Stal, Obs. Orthopt., Ill, 

 (1878), p. 6; Acridium strobelii Brunner (MS. ?)]. Argentine Republic, Uruguay. 



4. Dichroplus bergii (Pezotettix bergii Stal, Bih. K. Sv. Vet.-Akad. Handl., V, No. 9 (1878), pp. 6,7; 

 Acridium crassipes Brunner (MS. ?)]. Argentine Republic, Paraguay, Brazil. 



5. Dichroplus bicolor Giglio Tos, loc. cit., 1894, pp. 21-22. Argentine Republic, Paraguay. 



6. Dichroplus client [Acridium (Podisma) cliens Stal, Eug. Resa, Orth., 1860, p. 335; Pezotettix 

 (Dichroplus) cliens Stal, Rec. Ortb., I (1873), p. 78; Pezotettix cliens Stal, Obs. Orthopt., Ill (1878), p. 6]. 

 Uruguay. 



7. Dichroplus distinguendus Giglio Tos, loc. cit., 1894, pp. 22-23. Paraguay. 



8. Dichroplus elongatus Giglio Tos, loc. cit., 1894, pp. 23-24. Argentine Republic, Paraguay. 



9. Dichroplus exilis Giglio Tos, loc. cit., 1894, p. 23; Argentine Republic, Paraguay. 



10. Dichroplus fuscus [Gryllus fuscus Thunberg, Mem. Acad. St. Petersb., V (1815), p. 235 ; Pezotettix 

 (Trigonophymus) fuscus Stal, Rec. Orth., I (1873), p. 78]. Argentine Republic, Nova Cambria. 



11. Dichroplus lemniscatus [Acridium (Podisma) lemniscatum Stal, Eug. Resa, Orth., 1860, p. 334; 

 Pezotettix (Dichroplus) lemniscatus Stal, Rec. Orth., I (1873), p. 78; Pezotettix lemniscatus Stal, Obs. 

 Orthopt., Ill (1878), p. 6]. Argentine Republic, Brazil. 



12. Dichroplus patruelis [Acridium (Pcdisma) patruele Stal, Eug. Resa, Orth., 1860, p. 334; Pezotettix 

 (Dichroplus) patruelis Stal, Rec. Orth., I (1873), p. 78; Pezotettix patruelis Stal, Obs. Orth., Ill (1878). 

 p. 6; ? Acridium vittigerum Blanchard, Gay, Faun. Chil., Zool., VI (1851), pp. 73-74 (not Acrid, vittigerum 

 Blanchard, Voy. pole sud., Zool., IV (1853), pp. 371-372, pi. in, fig. 9)]. Argentine Republic, Paraguay, 

 Uruguay. If Blanchard' s Chilian vittigerum belongs here it must take precedence. 



13. Dichroplus peruvianus [Pezotettix peruvianus Stal, Bih. K. Sv. Vet.-Akad. Handl., V, No. 9 (1878), 

 pp. 7-8]. Peru. 



14. Dichroplus punctulatus [Gryllus punctulatus Thunberg, Mem. Acad. St. Petersb., IX (1824), p. 

 408; Pezotettix punctulatus Stal, Obs. Orth., Ill (1878), p. 6; Acridium (Podisma) fraternum Stal, 

 Eug. Resa, Orth., 1860, p. 333]. Argentine Republic, Uruguay, Brazil, New Grenada, Colombia. 



15. Dichroplus robustulus [Pezotettix robustulus Stal, Bih. K. Sv. Vet.-Akad. Handl., V, No. 9 (1878), 

 p. 7]. Southern Brazil. 



16. Paradichroplus aberrans Giglio Tos, loc. cit., 1891, p. 28. Paraguay. 



17. Paradichroplus bipunctatus Giglio Tos, loc. cit., 1894, pp. 26-27. Paraguay. 



18. Paradichroplus borellii Giglio Tos. loc. cit., 1894, pp. 27-28. Paraguay. 



19. Paradichroplus brunneri Giglio Tos, loc. cit. , 1894, pp. 25-26. Argentine Republic, Paraguay. 



20. Pezotettix antisanae Bolivar, Anal. Soc. Esp. Hist. Nat., X, Notes Ent. (1881), pp. 36-37. Autisana, 

 Ecuador. 



21 . Scopas obesus Giglio Tos, loc. cit., 1894, p. 29. Paraguay. 



22. Scotussa impudica Giglio Tos, loc. cit., 1894, p. 25. Uruguay. 



'Not including those mentioned in the body of this memoir. 



