NO. 1461. LIST OF PARA G UA TAN LOCUSTS— BR UNER. 627 



line of black, sometimes lighter or darker; below this flavous. Hind 

 femora testaceous, their outer disk more or less ferruginous or brown- 

 ish; hind tibife testaceous, their apex infuscated. Tegmina, except on 

 dorsal field, more or less fuscous. 



Length of body, female, 20-22; of pronotum, 3.8; of tegmina, 17; of 

 hind femora, 11.5 mm. 



Habitat. — Sapuca^^, Paraguay, January to March (W. T. Foster), 

 3 females. Also reported by Giglio-Tos from San Pedro. 



ORPHULELLA Giglio-Tos. 



The insects which belong to this genus are all rather small and ver}^ 

 variable in color — so much so, in fact, that without a very full series 

 of specimens for study the student can not construct a table that will 

 definitely separate them. There seem to be at least four, and possibly 

 five, well-marked forms found within the territory covered by the 

 present paper. Thej'^ may be determined by the following 



TABLE FOR DETERMINATION OF SPECIES. 



a. Lateral carinpe of the pronotum interrupted or obsolete between the anterior and 

 posterior sulci. 



b. Size small _. gracilis Giglio-Tos 



hb. Size larger, separate sections of carinse lunate obscura, new species 



aa. Lateral carinse of the pronotum complete or subinterrupted. Size larger. 



b. General color testaceous or pale ferruginous. The tegmina rather evenly sprin- 

 kled with fuscous dots. 

 c. Size larger (female, 18 mm.). Lateral carinee strongly divergent pos^- 



teriorly punctata (De Geer) 



CO. Size smaller (female, 16 mm.). Lateral carinse less strongly divergent pos- 

 teriorly intricata ( Stal ) 



bb. General color green. The discal field alone varied with fuscous. 



elegans Giglio-Tos 



ORPHULELLA GRACILIS Giglio-Tos. 



Orphulella (jrarilis Giglio-Tos, Boll. Mus. Zool. Anat. Torino, IX, No. 184, 1894, 

 p. 11. 



Halntat. — Various localities in Paraguay (Giglio-Tos); San Bernar- 

 dino (Bruner). / 



ORPHULELLA OBSCURA, new species. 



A very dark colored and strongly hirsute insect with broadly inter- 

 rupted lateral carina of the pronotum, and in this respect allied to (). 

 gracilis Giglio-Tos. As compared with gracilis it is, however, much 

 larger and more robust, and has the hind femora more than usually 

 robust for the genus. Body compressed and deep through the middle. 

 Head large and wide, as long as and a little broader than the front edge 

 of pronotum; eyes, especially in the male, large and prominent; vertex 

 fairly wide, short, the bounding walls parallel for a short distance 

 and meeting at fastigium in an obtuse angle even in the male; frontal 



