74 OKTHOPTERA. 



As I write, Saussure's type, a male, is before me ; while among the other material 

 which has been submitted to me for study by that gentleman there are three other 

 specimens of the same species. One of these latter, a female, bears the label " Orphula 

 zapoteca, Sauss. (inedit.) " ; another, a male, also bears a similar label ; and the third 

 is ticketed " Orphula pagana." There is scarcely any doubt that they all belong to 

 the same species. The female is brownish testaceous, and has the tegmina rather 

 coarsely sprinkled with dull fuscous spots, and lacks the green dorsal band on the disc 

 of the pronotum and along the hind edges of tegmina, so characteristic of the male. 



ORPHULINA, Giglio-Tos. 

 Orphulina, Giglio-Tos, Boll. Mus. Zool. Anat. Comp. Univ. Torino, ix. no. 184, p. 9 (1894). 



l. Orphulina pulchella, Giglio-Tos. 



Orphulina pulchella, Giglio-Tos, loc. cit. 1 . 

 Hah. Panama, Darien (Dr. Festa 1 ). — Colombia, Cartagena l ; Paraguay, San Pedro 1 . 



This insect was described from specimens from San Pedro, Paraguay, said to occur 

 also on the Isthmus of Darien and at Cartagena, Colombia, where individuals of 

 both sexes were taken by Dr. E. Festa. It has not been recognized by me, unless 

 Orphulella aculeata, Rehn, is the same species (see Trans. Amer. Ent. Soc. xxvii. 

 pp. 92, 93 et seq.). 



ORPHULELLA, Giglio-Tos. 



Orphula, Stal, Recens. Orthopt. i. p. 105 (1873) (part.). 



Sienobothrus, Scudder, Thomas, and others (nee Fischer) (part.). 



Orphulella, Giglio-Tos, Boll. Mus. Zool. Anat. Comp. Tor. ix. no. 184, p. 10 (Sept. 1894) ; Morse, 



Psyche, vii. p. 407 (1896) ; Scudder, Canad. Ent. xxxi. pp. 177-188 (1899). 

 Orphula, McNeill, Proc. Dav. Acad. Nat. Sci. vi. p. 233 (1897) (nee Stal). 



This genus is by far the most extensive in the subfamily Tryxalinse, being repre- 

 sented by a large number of species of rather small locusts that are to be met with as 

 common forms at most localities where they are found. Its representatives occur in 

 America between the latitudes of at least 45° north and south of the Equator. Twenty- 

 five are herewith assigned to Mexican and Central-American regions, while several 

 others may be found there hereafter. Although very similar in general appearance, a 

 close comparison of these insects shows that the different species can be distinguished 

 without much difficulty. 



Table for separating the Species of Orphulella. 

 A 1 . Discoidal area of the basal half of the tegmina of the ? generally 

 plainly narrowed distally, where it is nearly always occupied by a 

 single row of cells and is distinctly narrower than the ulnar area at 



