Bruner : Soi i ii Amern \\ Locusts. \:\ i 



which seem to in Giglio-Tos' description of T. humilis. The males 

 from Santa Cruz de la Sierra, Bolivia, where they were collected 

 a1 an elevation of four hundred and fifty meters above sea-level by J. 

 Steinbach. The females were collected at Puerto Suarez, Bolivia, 

 during November by the same person. 



2 2. Tetanorhynchus gracilis sp. nov. 



In size very similar to T. longicornis, described in the present paper, 

 but differing from it in the slightly more robust stature and the longer 

 rostrum of the vertex and much shorter antennae and subgenital 

 plate. Like that insect the present species also shows marked Cepha- 

 locoema characteristics. In fact one specimen has the sternum 

 distinctly separated from the pronotum, but otherwise does not differ 

 from the other individuals now being studied. 



Head coarsely punctulate, gently constricted slightly behind the 

 depressed eyes, the occiput quite noticeably canaliculate at middle 

 back of the eyes, between them carinated. Rostrum quadrate, evenly 

 tapering, as high as wide, gently depressed, the angles bluntly cari- 

 nated; above convex at base, sulcate apically, at sides basally with 

 a heavy longitudinal carina that gradually tapers towards the apex. 

 Frontal costa inconspicuous, somewhat similar to that of longicornis. 

 Sides of head rounded, without angles or carina. Antennae a 

 one-fourth shorter than the rostrum, the basal joint a tritle over a 

 third the length of the eyes. Pronotum subcylindrical, rather 

 strongly punctured, the surface somewhat glabrous, in the middle 

 scarcely carinated, but with a narrow space free from punctulation. 

 Abdomen with the basal joint punctulate, smooth beyond and the 

 apical segments faintly 5-carinate as in T. longicornis and several of 

 the species of Cephaloccema. Last ventral segment or subgenital 

 plate compressed, acuminate, and canaliculate above, the lower 

 middle strongly carinated, but the sides scarcely so. Supra-anal 

 plate short, roundly triangular. Legs slender. Hind tibi.e 10-12- 

 :-! 'ined. General color olive-green, more or less testaceous below. 



Length of body, cT, about 65 mm., of head, 12 mm., of rostrum, 

 4.5-6 mm., of pronotum, 12 mm., of anterior femora, 8 mm., of hind 

 femora, 20 mm., of hind tibiae, 20 mm., of subgenital plate, 4 mm. 



Length of body, 9. (?) 90 mm., of head, 14 mm., of rostrum, 5.5-6.5 

 mm., of pronotum, 16.5 mm., of anterior femora, [3 mm., of hind 

 femora, 29 mm., of hind tibiae, 31 mm. 



