49 



is somewhat raised, indicating- a continuation of the frontal 

 costa but without well-deHned lateral carinae. Tegmina 

 about two-thirds as long as abdomen, pointed at apex and 

 scarcely meeting on back. 



Length : of body, average, cf 23 mm, ? 34 mm ; of pro- 

 notum, (f 7 mm, ? 10.5 mm; of tegmina, d 15 mm, ? 16 

 mm: of hind femora, d^ 12 mm, + 16 mm. 



Found only at Carcarana F. C. C. A. in the province of 

 Santa Fe, where it occurs in moderate numbers upon the 

 ojjen camp. 



From collections of O. Thomas and A. Kurriger. 



Spathalixiii obscunnii n. sp. 



This insect is very similar in general structure and size to 

 the preceding, but differs markedly from that in having the 

 body entirely dark brownish gray, more or less varied with 

 black or deep brown. The thorax, pleurae, and femora are 

 much more heavily armed with tubercles and sjDines than in 

 the jireceding. The frontal costa in some specimens is 

 sulcate above and continuous with sulcation of fastigium ; 

 the lateral carinae converging to a point below the antennae, 

 then broadening again to oceUus and below where they end 

 as in iDreceding species. Posterior femora with indications 

 of two oblique dark colored bands on outer face, in some 

 si^ecimens accompanied by one of much lighter color just 

 beyond the middle. Tegmina with a more or less well de- 

 fined row of black dots along the discal field and upper edge, 

 otherwise of a uniform dull l^rown color. 



Dimensions slightly less than preceding. 



This insect has been taken at Cordoba (F. Schulz) and 

 Carcarana (O. Thomas). Less numerous than the proceding. 



SiKif/Ki/iuji In'sjiiduiii n. sp. 



In size and general structure similar to the two jjreceding, 

 but differs from both of them in having the body very much 

 variegated with lighter and darker streaks of yellowish gray, 

 brown, and black ; also in having the pronotum armed with 

 very strong tubercles which are spine-like in character, 



