Bruner: South American Crickets. 349 



Synopsis of the South American Genera of Curtillid.?-". 



A. Anterior tibiae four-toed. 



h. Posterior tibiae provided with several spines on inner margin. [Old world 



and west coast of America.] Curtilla. 



bb. Posterior tibiae without spines on inner margin, or seldom with a single 



small spine. [New world, except west coast] Neocurtilla. 



AA. Anterior tibiae two-toed. [New World] Scapleriscus. 



Genus Curtill.\ Oken. 



Curtilla Oken, Lehrb. Nat., III,(i8i5), p. 445. 

 Acheta Linnaeus (in part) S/st. Nat. (ed. X), I, (1758), p. 428. 

 Gryllotalpa Latreille, Hist. Nat. Crust. Ins., Ill, (1802), p. 275, and many others, 

 until very recently. 



The representatives of this genus of mole-crickets occur chiefly in 

 the Orient. At least two species, however, are native to the American 

 hemisphere, where they are confined to the region of the western coast. 

 A third species, the oldest known, has been introduced by commerce 

 to our cities on the eastern coast and possibly also to the principal 

 South American seaports. The following key will aid in separating 

 these three forms: 



Synopsis of American Species of Curtilla. 

 A. Size large, 40 to 45 mm. in length. [Various sea-ports, introduced from 



Europe.] gryllotalpa Linnaeus. 



AA. Smaller, 26 to 35 mm. in length. 



b. Pronotum provided with a median fulvous line. Size 26-28 mm. [Chile] 



chilensis Saussure. 



bb. Pronotum without a median fulvous line. Size 30-34 mm. [California, 



Mexico, and possibly to Isthmus of Panama] cidiriger Uhler. 



I. Curtilla cultriger (Uhler). 



Gryllotalpa cultriger Uhler, Proc. Ent. Soc. Philad., II (1864), p. 343; Scudder, 



Mem. Peabody Acad. Sci., I (1869), p. 23, PI. i, figs. 13, 32, 33, etc. 

 Curtilla cultriger Kirby, Syn. Cat. Orth., II (1906), p. 6. 



A single female specimen of this insect is at hand bearing the label 

 " Fuerte, Sinaloa, Mexico, Mrs. Bissell." This specimen belongs to 

 the Holland Collection in the Carnegie Museum. 



Synopsis of South American Species of Neocurtilla. 



A. Process of the anterior trochanters large, more or less distinctly triangular in 

 form. 

 b. Apex of the hind tibiae armed with only four spines. Tegmina and wings 



well-developed macilenla Saussure. 



bb. Apex of the hind tibite armed with six spines, three on each side. Tegmina 

 very short, wings absent minor sp. n. 



