4G0 Annals of the Carnegie Museum. 



either strongly abbreviated or even rudimentary wings. As men- 

 tioned by the present writer in the Annals, the different species are 

 frequently confined to special food-plants, upon which they sometimes 

 congregate in large numbers. Several of them are known to attack 

 tobacco and closely allied plants. 



Genus Ommexecha Serville. 



Ommexecha Serville, Ann. Soc. Nat., XII, p. 285 (1831); Bolivar, Rev. Chilena 

 Hist. Nat., Ill, p. 54 (1899); Bruner, Second Rept. Locust Comra. B. Aires, 

 p. 47 (1900). 



58. Ommexecha servillei Blanchard. 

 Ommexecha servillei Blanchard, Ann. Soc. Ent. France, V, p. 613, pi. 22, figs 2, 3 



(1836). 



Habitat. — There is a single male before me, which comes from Santa 

 Cruz de la Sierra, Bolivia. It was taken by J. Steinbach at an ele- 

 vation of 450 meters above sea-level. 



59. Ommexecha giglio-tosi Bolivar. 



Ommexecha giglio-tosi Bolivar, Rev. Chilena Hist. Nat., Ill, p. 54, 55 (1899). 

 Ommexecha brunneri Giglio-Tos, Boll. Mus. Zool. Anat. Comp. Torino, No. 302, 

 p. 27, in part (nee Ommexecha brunneri Bolivar). 



Habitat. — A single male specimen of this locust is at hand. It was 

 taken at the same locality as the preceding by J. Steinbach. 



Genus Spathalium Bolivar. 

 Spathalium Bolivar, Ann. Soc. Esp., XIII, p. 21, 30, 403 (1884). 



60. Spathalium bolivari Bruner. 

 Spathalium bolivari Bruner, Ann. Carnegie Mus., VIII, pp. 39-41 (1911)- 



Habitat. — A very much mutilated specimen from Santarem, Brazil, 

 is at hand. It is part of accession number 2966, and was taken during 

 December. 



Family CYRTACANTHACRID.E (ACRIDIID.E). 



This is by far the most extensive family of short-horned grass- 

 hoppers, or locusts. It is especially well represented in South America, 

 where more than one hundred and thirty genera have already been 

 recognized. The present collection contains its share of them, as will 

 be seen by the following records. 



