404 Annals of the Carnegie Museum. 



Length of body, cf , i8 mm., 9, 19 mm.; of pronotum, c/' , ii-75 



mm., 9 , 12 mm.; of hind femora, d^ , 17 mm., 9 , 18 mm. ; of ovipositor, 



t 

 10.5 mm. 



Habitat. — The types, d^ and 9 , come from Chapada, near Cuyaba, 



Matto Grosso, Brazil, where they were taken during November 



(H. H. Smith). Another specimen comes from "Province del Sara," 



Bolivia (J. Steinbach). The types are in the Carnegie Museum. 



Family RHAPHIDOPHORID/E. 

 The family Rhaphidophorid^e is composed of apterous rather active 

 insects usually known as "cave crickets" and "camel crickets." 

 Like the various species belonging to the preceding family most, if 

 not all, of the representatives of the present family are nocturnal, or 

 at least crepuscular in habit. The majority live in caverns, crevices, 

 underground passages, beneath stones, logs, etc., while the remainder 

 burrow in the ground. Only two genera of these insects appear to 

 have been recorded as belonging to South America. They are the 

 following: 



Synopsis of South American Genera of Rhaphidophorid^^ 

 A. Supra-anal plate of male abdomen transverse, very short, the apex on each 

 side terminating with a straight, acuminate appendage. Cerci straight, 

 pilose. The subgenital plate triangulately and lengthily produced, the 



styles very short Udenus Brunner. 



AA. Supra-anal plate of male abdomen roundly produced. Cerci slender, not hir- 

 sute, the apex blunt. The subanal plate produced into a cylindrical 

 tubercle, at the sides furnished with very small styles. 



Heteromallus Brunner. 



Representatives of neither of these genera are contained in the 

 material, upon which report is now being made/. 



