Bruner: South American Crickets. 351 



Habitat. — The only specimen at hand, the type, comes from Rio 

 Mamore, Bolivia, where it was taken "between the farm Berlin and 

 Guaja Mirim, Sept. 16-24, 1909- by J. D. Haseman." This specimen 

 is very imperfect, since it lacks both the antennae and the cerci. It is 

 by far the smallest representative of the genus as well as of the family 

 thus far discovered. It is the property of the Carnegie Museum. 



3. Neocurtilla hexadactyla (Perty). 



Gryllotalpa hexadactyla Perty, Del. Anim. Art. (1832), p. 119, PI. 23, fig. 9; BuR- 

 MEiSTER, Handb. Ent., II (1838), p. 740; Scudder, Mem. Peabody Acad. Sci., 

 I (1869), p. 27, PI. I. figs. 17, 37, 38. 



var. Gryllotalpa azteca Saussure, Rev. Zool. (2). XI (1859), p. 316. 



Gryllotalpa hexadactyla var. azteca Saussure, Miss. Mex., Orth., (1874), P- 345; 

 Bioi. Cent.-Amer. Orth. I (1894), p. 200. 



Neocurtilla hexadactyla Kirby, Syn. Cat. Orth., II (1906), p. 2. 



Habitat. — This insect has a very wide distribution in tropical and 

 subtropical America. Specimens are at hand from the following 

 localities: Para and Chapada, Brazil (H. H. Smith); Rio Grande, 

 Bahia, Dec. 30, 1907, Lagoa Feia, Tocos, Espirito Santo, June 29, 

 1908, and Raiz de Serra, near Santos, Sao Paulo, July 26, 1908 (J. D. 

 Haseman); Puerto Suarez, Bolivia, 150 M., Nov. 1908-Jan. 1909 

 (J. Steinbach). There is also a female specimen in the writer's 

 collection taken at Rosario, Argentina, by H. Stempelmann. 



In addition to the two species just referred to I find a single specimen 

 of iV. borealis, Burmeister, in the material now being studied. It bears 

 the locality label "Pittsburg, Pa." 



The species N. claraziana Saussure, is represented in the writer's 

 collection, and was taken by him at Carcarafia, Argentina, during his 

 visit to that country in 1897-8. 



Genus SCAPTERiscus Scudder. 

 Scapteriscus Scudder, Proc. Bost. Soc. Nat. Hist. XI, (1868), p. 385; Memoirs 

 Peabody Acad. Sci., I, (1869), p. 6; Saussure, Miss. Mex., Orth. (1874), 

 p. 336; Mem. Soc. Geneve, XXV (1877), p. 36; Giglio-Tos, Boll. Mus. 

 Torino, IX (1894), No. 184, p. 43. 



The genus Scapteriscus is confined to the Americas, where it is 

 represented by approximately a dozen species, most of which occur 

 in South America. While there is a great variation among these 

 distinct forms in size and length of wing, many of them are very simi- 

 lar in general appearance and rather difficult to determine. The an- 

 nexed table will in a measure aid in their separation, although the char- 

 acters here employed are rather superficial and not very structural in 

 nature: 



