50 PROCEEDINGS OF THE ACADEMY OF [Feb., 



specimens from Carcarana, Argentina, determined by Bruner show. 

 The Argentine form is smaller, with the lateral carinse of the pronotum 

 more constricted and the coloration more variable than in signatipennis. 

 This is apparently one of the species on which Brunner erected his 

 insufficiently characterized Pseudostcnironotus,'^'' as specimens received 

 from Saussure from Buenos Ayres bear the manuscript name Pseudo- 

 stauronotus occidentalis. 

 Stirapleura humilis (Blanchard). 



1851. Q^dipoda huynilis Blanchard, in Gay, Hist. Fis. y Polit. de Chile, 

 Zool., VI, p. 79. [Coquimbo, ChiU.] 



Penco, Chili. November and December, 1903, and February, 1904. 



17 d'c^, 16 9 ? , 5 immat. (C. S. Reed, A. N. S. P.) Concepcion, 

 Chili. November and December, 1903, and February, 1904. 20 d'd', 

 7 9 9,3 immat. (Reed, A. N. S. P.) Coronel, Chili. January, 1904. 

 1 d". (Reed, A. N. S. P.) Longuen, Chili. February, 1904. ^2d(^, 

 4 9 9. (Reed, A. N. S. P.) Guiltio, ChiU. December, 1903. 2 

 d" (^ , 6 9 9 . (Reed, A. N. S. P.) Lota, Chili. October, 1903. 1 (^ . 

 (Reed, A. N. S. P.) 



This large series exliibits a very great amount of individual variation 

 in size and color. The females range in total length from 13 to 20 

 millimeters, the males varying proportionately. The color ranges 

 from a mottled black-brown and gray with femoral bars and weakly 

 lateral carinse of the pronotum, to another with the general color pale 

 with broad dark lateral bars on the dorsum of the head and pronotum 

 with a broad pale median bar, a longitudinal dark bar on the tegmina 

 flanked toward the costa by a pale green line, and the femora with 

 bars and suffused along the dorso-lateral carinse with blackish. The 

 latter type has the markings of the lateral lobes of the pronotum quite 

 distinct and the genicular regions of the caudal femora and tibise are 

 paler than in the other type, in which these portions are blackish. 

 These differences are irrespective of locality and date, and are con- 

 nected by dozens of intermediates. 



This species appears to fit Blanchard's form, some specimens agree- 

 ing very well with the rather vague description. It is apparently a 

 common species. 

 Stirapleura pallida Bruner. 

 Stirapleura obscura Bruner. 



The position of this species is a little doubtful. In some respects 

 it resembles hnnieri, but its general characters approach brunnea. 

 Stirapleura brunnea Rchn. 



" Ann. Mus. Civ. Slor. Nat. Genord, XXXIII, p. 123, 1893. 



