96 'PRO GEE DINGS OF THE NA TIONA L MUSE UM. 



by Latreille l in 1825 for short- winged Acridians with a prosternal spine, 

 without specification of species. Its next use was by the same author 

 in 1829 2 in its proper Latin form, and the European species now known 

 as Pezotettix pedestris and Platypliyma giornae referred to it. The same 

 two species, and these only, are again referred to Podisma by Serville 3 

 in 1831, and to the same as a subgenus of Acridium by the same writer 

 in 1839. 4 Burin eister, 5 however, in 1840, refers these same species, and 

 these only to a new genus Pezotettix, to which he gives as a synonym 

 "Podisma Latreille ex parte:" In Burmeister's view the other portion 

 of Latreille's genus included such species as Stenobothrus parallelus 

 and Chrysochraon dispar. 6 But these latter species are excluded by 

 Latreille's definition, and in his writings I can not find that he has ever 

 mentioned any other species as appertaining to the genus than the two 

 first mentioned above. 



The only other authors who had at this time employed the term were 

 Brulle 7 in 1832, who (as quoted by Fischer) referred to it only species 

 of Stethophyma and Stenobothru*] Heyer, 8 who in 1835 (?) employed it 

 for Chrysochraon dispar; Stephens, 9 who in 1835 had referred pedestris 

 only to it; and Costa, 10 who in 1836 had referred to it four supposed 

 new species appulum, campanum^ calabrum, and coimnnnis, the first 

 two of which are now regarded as synonyms of Acridium aegyptium L., 

 the third as probably a Pamphagus, and the last as giornae. In view 

 of the limitation of the genus by Serville (if Latreille ever intended 

 its greater extension), this action of Brulle and of Costa has no force, 

 and hence, if the name Pezotettix can be retained at all, it must be by 

 regarding one of the two original species as the type of Pezotettix^ the 

 other of Podisma. 



As far as I can discover, the first author to refer the two species to 

 distinct genera was Fieber, 11 who in June, 1853 referred giornae to his 

 new genus Pelecyelus, and pedestris to Podisma. Also in 1853, but 

 later, his introduction being dated November, H. Fischer 12 referred the 

 former species to his new genus Platypliyma and the latter to Pezotettix. 

 Fischer has been generally followed, but it is plain that Platypliyma 

 must give way to Pelecyclus, which in its turn must yield precedence to 

 Pezotettix^ of which giornae becomes the type, while pedestris becomes 

 the type of Podisma. 



'Fam. Nat., p. 415. 

 s Cuvier, Regue Auim., V, p. 188. 

 s Rev. Me"th. Orth., pp. 98-99. 

 'Hist. Nat, Orth., pp. < 79-681. 

 f Germar, Zeitschr. Ent., II, p. 51. 



^Compare Handb. Ent., II, p. 650, where "Podisma Latreille ex parte" is giveii as 

 the equivalent of certain unnamed divisions. 

 7 Exp. Horde. 



''Germar, Faun. Ins., fasc. 17. 

 Illustr., Hand., VI, p. 29. 

 10 Faun. Reg. Nap., pp. 43-48. 

 11 Lotos, III, p. 119. 

 12 Orth. Eur.,pp. 369,374. 



